DQR ID | Subject | Data Streams Affected |
---|---|---|
D000210.1 | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000210.3 | SGP/EBBR - EBBR E22 Moved, Data Missing/Incorrect | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D000210.4 | SGP/EBBR - EBBR E22 Net Radiation Incorrect | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D000211.1 | SGP/EBBR - EBBR E25 Data Missing/Incorrect During System Changeout | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000211.10 | SGP/EBBR - EBBR E20 Data Incorrect from SHF #5 | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D000211.12 | SGP/EBBR - EBBR E20 Thermocouple Data Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D000211.13 | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000211.5 | SGP/EBBR - EBBR E25 Data Missing/Incorrect During Program Upload | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000211.6 | SGP/EBBR - EBBR E25 Data Missing/Incorrect During Solar Panel Change | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000211.8 | SGP/EBBR - EBBR E25 Data Incorrect During J-panel Change | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000211.9 | SGP/EBBR - EBBR E25 Thermocouple Temperatures Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000221.3 | SGP/EBBR/E26 - Right Aspirator Not Working | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000221.7 | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000225.1 | SGP/EBBR/26 - Low Battery Condition | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000228.1 | SGP/EBBR - EBBR E20 Right Air Temperature Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D000301.11 | SGP/EBBR - EBBR E22 Soil Moistures Negative | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D000301.5 | SGP/EBBR - EBBR E25 Net Radiation Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D000301.9 | SGP/EBBR/E26 - Net Radiation Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D000302.2 | SGP/EBBR - EBBR E22 Soil Moistures Negative | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D000303.1 | SGP/EBBR - EBBR E20 Left Air Temperature Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D000307.10 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.11 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.12 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.13 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.14 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.15 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.16 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.17 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.18 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.2 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.5 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.6 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.7 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.8 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D000307.9 | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
D940105.10 | SGP/EBBR/E22 - Air Temperature Sensor malfunction | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D940105.2 | SGP/EBBR/E20 - Blown fuse in AEM at E20 | sgp15ebbrE20.a0, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D940105.7 | SGP/EBBR/E22 - Incorrect averaging interval at E22 | sgp30ebbrE22.a1 |
D940105.8 | SGP/EBBR/E20 - Reprocess: Questionable data in soil heat fluxes at E20 | sgp15ebbrE20.a0, sgp30ebbrE20.a1 |
D940211.1 | SGP/EBBR/E26 - Invalid data during Preventative Maintenance | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D940301.2 | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D940329.1 | SGP/EBBR/E26 - Wind Direction Sensor Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D940329.2 | SGP/EBBR/E20 - Pressure Sensor Malfunction | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D940606.1 | SGP/EBBR/E26 - Wind Speed Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D940606.2 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D940616.4 | SGP/EBBR/E20 - Soil Moisture Probe | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D940818.1 | SGP/EBBR/E26 - Soil Moisture Sensor Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
D940921.1 | SGP/EBBR/E20 - Fan Stopped, T and RH Biases | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D941021.1 | SGP/EBBR/E20 - Soil Moisture Probe Failure | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D941021.2 | SGP/EBBR/E20 - Aspirator Fan Stoppage | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D941021.3 | ||
D941212.1 | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D941221.1 | SGP/EBBR/E26 - T/RH Check | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950308.3 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950626.10 | SGP/EBBR/E26 - Stopped Ventilation Fan | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950626.14 | SGP/EBBR/E26 - Reprocess: Soil Heat Flow Sensor 1 Replacement | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
D950626.19 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950626.4 | SGP/EBBR/E20 - Frozen Wind Speed Sensor | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D950626.5 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950626.9 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950803.2 | SGP/EBBR/E20 - Reprocess: Soil Temperature Malfunction | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D950815.3 | SGP/EBBR/E20 - Annual Calibration Changeout | sgp30ebbrE20.a1 |
D950816.4 | SGP/EBBR/E20 - AEM Home 30 Values Low | sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D950908.2 | SGP/EBBR/E26 - AEM not exchanging | sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D950921.4 | SGP/EBBR/E26 - AEM replacement | sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D951016.1 | SGP/EBBR/E26 - Battery Voltage Drop | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D951016.2 | SGP/EBBR/E26 - Net Radiometer Dome Punctured | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D951020.1 | SGP/EBBR/E9 - 3-month Check | sgp15ebbrE9.a1, sgp30ebbrE9.a1, sgp5ebbrE9.a0 |
D951113.2 | SGP/EBBR/E22 - Missing data | sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D951113.4 | SGP/EBBR/E26 - Right Tair Offscale | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D951116.1 | SGP/EBBR/E13 - AEM Exchange Stopped in Snow and Freezing Rain | sgp30ebbrE13.a1 |
D951116.2 | SGP/EBBR/E20 - Soil Heat Flow Zero Under Unchanging Conditions | sgp30ebbrE20.a1 |
D951116.3 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960104.2 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960104.3 | SGP/EBBR/E22 - Wind Speed Cups Frozen | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D960104.8 | SGP/EBBR/E26 - Right Tair Offscale | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960119.3 | SGP/EBBR/E26 - Right tair Offscale | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960408.2 | SGP/EBBR/E22 - Reprocess: Soil Heat Flow Sensor 4 Incorrect Data | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D960409.1 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960501.4 | SGP/EBBR/E26 - Right Air Temp Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960502.1 | SGP/EBBR/E20 - Temperature/RH Probes Malfunction and Replacement | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
D960508.10 | SGP/EBBR/E26 - 3-month check | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D960508.8 | SGP/EBBR/E20 - 3-month check | sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D960508.9 | SGP/EBBR/E22 - 3-month check | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D961122.12 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D961122.13 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D961122.17 | SGP/EBBR/E20 - Incorrect Data from Left Humidity Probe | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D961122.19 | SGP/EBBR/E4 - EBBR 3 Month Checks - 10 EFs | sgp15ebbrE4.a1, sgp30ebbrE4.a1, sgp5ebbrE4.a0 |
D961122.2 | SGP/EBBR/E22 - Annual Calibration Changeout | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D961122.4 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D961122.5 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D970330.5 | SGP/EBBR/E20 - Wind Speed Cups Frozen | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D970330.6 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D970627.2 | SGP/EBBR/E26 - Reprocess: E26 Soil Heat Flow Sensor 1 Replacement | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
D970707.1 | SGP/EBBR/E22 - Reprocess: E22 Soil Heat Flow Sensor # 5 Incorrect Data | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D970729.1 | SGP/EBBR/E20 - Reprocess: E20 Soil Probes #3 Cables Cut | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
D970730.1 | SGP/EBBR/E22 - Right Aspirator Unit Stolen | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D971017.7 | SGP/EBBR/E22 - Reprocess: E22 EBBR Soil Heat Flow Probe #5 Incorrect Data | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D971021.1 | SGP/EBBR/E7 - EBBR Biannual Checks | sgp15ebbrE7.a1, sgp30ebbrE7.a1, sgp5ebbrE7.a0 |
D971027.10 | SGP/EBBR/E26 - Missing Data | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D971027.9 | SGP/EBBR/E26 - Bad Dates | sgp30ebbrE26.a1 |
D980117.2 | ||
D980117.3 | SGP/EBBR/E25 - Bowen Ratio Usually Negative - Fluxes Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D980117.4 | ||
D980117.5 | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D980117.8 | SGP/EBBR/E2 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp15ebbrE2.a1, sgp30ebbrE2.a1, sgp5ebbrE2.a0 |
D980410.10 | SGP/EBBR/E20 - Wind Speed Sensor Frozen | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
D980413.2 | SGP/EBBR/E20 - Data Missing | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D980413.5 | SGP/EBBR/E22 - Low Battery - Resulting In Incorrect Data | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D980416.16 | SGP/EBBR/E20 - 3 Month Check | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D980416.17 | SGP/EBBR/E22 - 3-Month Check | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D980416.18 | SGP/EBBR/E26 - 3-Month Check | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D980507.5 | SGP/EBBR/E26 - Character In EBBR E26, 30 Minute Data | sgp30ebbrE26.a1 |
D980514.1 | SGP/EBBR/E25 - Right Humidity Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D980527.1 | ||
D980529.14 | SGP/EBBR/E20 - Six Month Checks | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D980529.15 | SGP/EBBR/E22 - Six Month Checks | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D980529.16 | SGP/EBBR/E25 - Six-Month Checks | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D980529.17 | SGP/EBBR/E26 - Six Month Checks | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D980701.1 | SGP/EBBR/E22 - Data Missing During Battery Replacement | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
D980701.2 | SGP/EBBR/E26 - Data Missing During Battery Terminal Cleaning | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D980731.2 | SGP/EBBR/E20 - Wind Speed Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D980731.3 | SGP/EBBR/E25 - Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D980731.4 | SGP/EBBR/E25 - Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D981113.1 | SGP/EBBR/E20 - Incorrect Data - Cattle Vandalism | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990127.11 | SGP/EBBR/E25 - All Data Incorrect (zeros) | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
D990127.15 | SGP/EBBR/E25 - Wind Direction and Speed Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
D990127.2 | SGP/EBBR/E22 - Battery Voltage Low, Data Incorrect | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.00, sgp5ebbrE22.a0 |
D990127.25 | SGP/EBBR/E20 - Wind Direction Data Incorrect (revised) | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990127.28 | SGP/EBBR/E25 - Wind Direction Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D990127.29 | SGP/EBBR/E20 - Wind Direction Data Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990127.30 | SGP/EBBR/E22 - Wind Direction Data Incorrect | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.00, sgp5ebbrE22.a0 |
D990127.31 | SGP/EBBR/E26 - Wind Direction Data Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D990127.40 | SGP/EBBR/E20 - Wind Speed Data Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990127.41 | SGP/EBBR/E20 - Wind Speed Data Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990127.42 | SGP/EBBR/E26 - Wind Speed Data Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
D990127.43 | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990127.7 | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990128.10 | SGP/EBBR/E25 - Wind Speed Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D990128.11 | SGP/EBBR/E25 - Wind Speed Data Incorrect | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D990129.5 | SGP/EBBR/E26 - Battery Voltage Low | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990129.8 | SGP/EBBR/E20 - Data Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
D990218.2 | SGP/EBBR/E20 - Pressure Low | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990315.1 | SGP/EBBR/E20 - Right Relative Humidity Offset Low | sgp15ebbrE20.a1 |
D990316.1 | SGP/EBBR/E22 - Right Aspirator Fan Replaced | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
D990409.6 | SGP/EBBR/E26 - Calibration Changeout | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990409.8 | SGP/EBBR/E25 - CR10 Program Revision (Vs. 7) | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
D990415.3 | SGP/EBBR/E20 - Air Temperature Incorrect | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
D990421.2 | SGP/EBBR/E26 - Incorrect Data | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0, sgpebbrE26.00 |
D990421.3 | SGP/EBBR - EBBR E26 Incorrect Data | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0, sgpebbrE26.00 |
D990622.6 | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990622.7 | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990622.8 | SGP/EBBR/E26 - Battery Wire Problem Causes Data To Be Missing | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990622.9 | SGP/EBBR/E26 - Battery Wire Problem Causes Data To Be Missing | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
D990623.2 | SGP/EBBR/E25 - Data Missing During PM | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
D990623.3 | SGP/EBBR/E25 - Data Incorrect During PM | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
D990623.4 | SGP/EBBR/E25 - Data Incorrect During PM | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
D990623.5 | SGP/EBBR/E25 - Data Incorrect During PM | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The temperature from the left T/RH probe went offscale frequently. This temperature is used in the calculation of the vapor pressure. Therefore, top and bottom Thum measurements, left Thum, top and bottom vapor pressure measurements, vapor pressure gradients, and the resulting latent and sensible heat fluxes and bowen ratio were frequently incorrect for the period stated. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/29/1999 | 1415 | 11/02/1999 | 2030 |
Subject: | SGP/EBBR - EBBR E22 Moved, Data Missing/Incorrect |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | During, and as a consequence of, the relocation of E22 EBBR, some data is missing or incorrect during the period above. The data was sneakernetted on 3 Nov 99, so some of the data may have been recovered. Some of the data during the period is incorrect as a consequence of damage done by cattle during the period; inspection of the data is required to determine incorrect data. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/29/1999 | 1430 | 11/03/1999 | 1930 |
Subject: | SGP/EBBR - EBBR E22 Net Radiation Incorrect |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | The upper dome of the net radiometer was broken, probably by migrating birds, and water had drained into the bottom dome. Since much of the data is missing during the period, it is not clear exactly when the top dome was broken during the period. All net radiation data and sensible and latent heat fluxes data are incorrect for this period. The affected data fields are: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/25/1999 | 1430 | 10/25/1999 | 1845 |
Subject: | SGP/EBBR - EBBR E25 Data Missing/Incorrect During System Changeout |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | All data was missing or incorrect during the EBBR system changeout. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/07/1999 | 1800 | 04/21/1999 | 1730 |
Subject: | SGP/EBBR - EBBR E20 Data Incorrect from SHF #5 |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | something, since the problem began during J-panel changeout the 4/7/99 PM. At the 7/21/99 PM, the reference temperature was repaired and reseated. At that time the SHF #5 data became correct again; the two events are probably related only in that other connections, including that of the SHF #5, were probably reseated at the same time. The report of the PM activity is not detailed enough to determine the exact causes and fixes. The incorrect SHF #5 data can be identified by it being an order of magnitude larger than the values from the other soil heat flow sensors. Affected data are: 5 minute: none 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/1999 | 1715 | 06/18/1999 | 1745 |
Subject: | SGP/EBBR - EBBR E20 Thermocouple Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Left and right thermocouple air temperature data are incorrect during the replacement of the right thermocouple. Affected data are: 5 minute: tair_bot, tair_top 15 minute: tai_r, tair_l 30 minute: tair_bot, tair_top, e, h, bowen |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Left T/RH probe temperature is frequently offscale during the period. Examine the data (compare with the the T/RH right temperature) to determine which times are incorrect. Replacement of the probe on 29 June 1999 solved the problem. Affected data are: 5 minute: tair_bot, tair_top 15 minute: tair_l 30 minute: tair_bot, tair_top, e, h, bowen |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/30/1999 | 1400 | 06/30/1999 | 1930 |
Subject: | SGP/EBBR - EBBR E25 Data Missing/Incorrect During Program Upload |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | All data was missing or incorrect during the upload of the CR10X program; the program was uploaded after checking the SHF #1 calibration. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 1430 | 06/16/1999 | 1900 |
Subject: | SGP/EBBR - EBBR E25 Data Missing/Incorrect During Solar Panel Change |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | All data was missing or incorrect during the replacement of the solar panel. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 1915 | 06/16/1999 | 2000 |
Subject: | SGP/EBBR - EBBR E25 Data Incorrect During J-panel Change |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | Some data was incorrect during the replacement of the J-panel #4. Affected data are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot, tref 15 minute: rr_thum_r, rr_thum_l, rr_ts1, rr_ts2, rr_ts3, rr_ts4, rr_ts5, r_sm1, r_sm2, r_sm3, r_sm4, r_sm5, tair_r, tair_l, r_tref 30 minute: bowen, e, h, tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot, sm1, sm2, sm3, sm4, sm5, shf1, shf2, shf3, shf4, shf5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5, ts1, ts2, ts3, ts4, ts5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, ces5, g1, g2, g3, g4, g5, ave_shf, tref |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 2015 | 06/17/1999 | 0500 |
Subject: | SGP/EBBR - EBBR E25 Thermocouple Temperatures Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | Thermocouple temperature data was incorrect during the period, for unknown reasons. Affected data are: 5 minute: tair_top, tair_bot 15 minute: tair_r, tair_l 30 minute: bowen, e, h, tair_top, tair_bot |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2000 | 0230 | 01/27/2000 | 1700 |
Subject: | SGP/EBBR/E26 - Right Aspirator Not Working |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The right aspirator fan did not work during the period. The following values were therefore incorrect: 5 minute: tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_l, mv_hum_l, tair_l 30 minute: tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot, vp_top, vp_bot, e, h, bowen |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0635 | 10/07/1999 | 1620 |
Subject: | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The anemometer was not working during this period. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/1999 | 0615 | 08/12/1999 | 1600 |
Subject: | SGP/EBBR/26 - Low Battery Condition |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | When battery voltage was less than 10.4 V DC during this period, all data should be considered to be incorrect. The cause of the problem was a broken trace on J-panel #3. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/1999 | 0700 | 02/09/2000 | 1715 |
Subject: | SGP/EBBR - EBBR E20 Right Air Temperature Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The right air temperature (thermocouple) output was frequently offscale. Examination of the 15 minute data will clearly show which times are affected during the period. The affected data are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/1999 | 0300 | 08/04/1999 | 1730 |
Subject: | SGP/EBBR - EBBR E22 Soil Moistures Negative |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Because of the lack of rain, soil moistures were negative during much of the period. All five soil moisture sensors had negative outputs by early on Aug 1. The negative soil moistures affected sensible and latent heat fluxes slightly. The affected data are: 15 minute: r_sm1, r_sm2, r_sm3, r_sm4, r_sm5 30 minute: sm1, sm2, sm3, sm4, sm5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, ces5, g1, g2, g3, g4, g5, ave_shf, e, h |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/07/1999 | 1900 | 09/08/1999 | 2200 |
Subject: | SGP/EBBR - EBBR E25 Net Radiation Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0700 | 10/07/1999 | 1700 |
Subject: | SGP/EBBR/E26 - Net Radiation Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/15/1999 | 0800 | 10/30/1999 | 0300 |
Subject: | SGP/EBBR - EBBR E22 Soil Moistures Negative |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Because of the lack of rain, all soil moistures were negative during much of the period. The negative soil moistures caused soil heat storage and thus average soil heat flux to be smaller than they should have been. The sensible and latent heat fluxes were therefore reduced slightly (approximately 0-5%). The affected data are: 15 minute: r_sm1, r_sm2, r_sm3, r_sm4, r_sm5 30 minute: sm1, sm2, sm3, sm4, sm5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, ces5, g1, g2, g3, g4, g5, ave_shf, e, h |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/2000 | 1935 | 02/23/2000 | 2000 |
Subject: | SGP/EBBR - EBBR E20 Left Air Temperature Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Left air temperature (thermocouple) was incorrect during part of the period, thereby affecting top and bottom air temperature. The affected data and times are: 5 minute: tair_top (1935 GMT) 15 minute: tair_l (1945 GMT) 30 minute: tair_top, bowen, e, h (2000 GMT) |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/04/1999 | 1800 | 08/04/1999 | 1800 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/05/1999 | 0100 | 08/05/1999 | 0200 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/06/1999 | 1830 | 08/06/1999 | 1830 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/1999 | 0130 | 08/07/1999 | 0130 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/17/1999 | 0130 | 08/17/1999 | 0130 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/1999 | 0200 | 08/18/1999 | 0400 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/1999 | 0930 | 08/18/1999 | 1030 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/15/1999 | 2000 | 10/15/1999 | 2330 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/1999 | 0000 | 10/26/1999 | 0030 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/26/1999 | 0100 | 07/26/1999 | 0530 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/03/1999 | 0100 | 08/03/1999 | 0430 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/1999 | 1730 | 08/16/1999 | 1800 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/1999 | 0100 | 08/02/1999 | 0230 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/03/1999 | 1800 | 08/03/1999 | 1800 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/04/1999 | 0100 | 08/04/1999 | 0200 |
Subject: | SGP/EBBR - EBBR E25 Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1 |
Description: | Soil heat flux #1 was large negative or offscale numerous times. |
Measurements: | sgp15ebbrE25.a1:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 0000 | 12/21/1993 | 1800 |
Subject: | SGP/EBBR/E22 - Air Temperature Sensor malfunction |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | The right air temperature probe (thermocouple) malfunctioned during the periods stated above at Cordell, OK (E22). It was replaced on December 21, 1993 and good data began again with the 1830 GMT half hour average. For the periods of interest, 5 and 30 minute values of tair_top and tair_bot are incorrect when the right probe was in the specified position; 15 minute values of tair_r are incorrect; and 30 minute values of bowen, e, and h are incorrect. None of these values are recoverable or recalculatable through the use of other quantities since both air temperature probes are needed to determine bowen ratio. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/1993 | 1300 | 11/12/1993 | 1600 |
Subject: | SGP/EBBR/E20 - Blown fuse in AEM at E20 |
DataStreams: | sgp15ebbrE20.a0, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | On October 30, 1993, before 1300 GMT, the fuse in the AEM (Automatic Exchange Mechanism) of Meeker, Ok (E20) EBBR blew out. The AEM remained nonfunctional until the fuse was replaced just before 1600 GMT on November 12, 1993. This situation resulted in the following invalid data: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, home 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, mv_home, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h, home_15, home_30 If the biases of the sensors were know, bowen, h, and e could be recalculated from the 15 minute and/or 5 minute data. Since we will not have any idea of what those biases are until an annual calibration of the sensors can take place (which may be months away), the recalculations cannot be performed at this time. Furthermore, it may be invalid to use sensor biases, if determined too far removed in time, due to the gradual calibration drift of some of the sensors. |
Measurements: | sgp15ebbrE20.a0:
sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/1993 | 1700 | 11/22/1993 | 1700 |
Subject: | SGP/EBBR/E22 - Incorrect averaging interval at E22 |
DataStreams: | sgp30ebbrE22.a1 |
Description: | On November 9, 1993 version 4 of the EBBR program installed at Cordell, OK (E22) was mistakenly modified in one area during the process of modifying a calibration in another part of the program. The mistaken modification was a change in the execution interval from 30 seconds to 10 seconds. This modification remained in the program until November 22, 1993 when it was discovered and changed back to a 30 second execution interval. The modification produced no ill effects as the execution interval only changes sampling and averaging periods. A 10 second execution interval results in three times as many samples being taken, which, when averaged, should actually produce more accurate results. Therefore, data quality was not affected. This PIF was written only to document the fact that the mistaken modification was made, and when it was made. |
Measurements: | sgp30ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/1993 | 1215 | 11/24/1993 | 1515 |
Subject: | SGP/EBBR/E20 - Reprocess: Questionable data in soil heat fluxes at E20 |
DataStreams: | sgp15ebbrE20.a0, sgp30ebbrE20.a1 |
Description: | Soil heat flux probes #4 had been indicating soil heat fluxes that were higher than the other four probes. It was decided to replace it. On November 24, 1993 Soil Heat Flux probe #4 was replaced, resulting in outputs more similar to the other four probes. This PIF does not invalidate previous measurements by the old probe #4, but only indicates data that is bad as a result of the replacement procedure. This procedure resulted in some bad data for the adjoining soil heat flux probes #3 and #5 also. Bad data for #3 includes the 1600 GMT half hour, and 5 and 15 minute periods between 1530 and 1600 GMT. Bad data for #4 includes half hour times of 1600 through 1900 GMT, with 5 and 15 minute data inbetween those times being invalid as well. Bad data for #5 includes half hour times of 1630 and 1700 GMT, with 5 and 15 minute periods inbetween those times being invalid as well. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e, and corrupted 15 minute values of mv_hft4 resulted. The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not recoverable. The other quantities can be recalculated using the remaining functioning set(s) of soil sensors. Use the following equations: ave_shf = (gs summed)/n, where n is the number of probes functioning e = -(q + ave_shf)/(1 + bowen) where q is net radiation, and bowen is Bowen Ratio h = e * bowen |
Measurements: | sgp15ebbrE20.a0:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/1993 | 1645 | 12/28/1993 | 1900 |
Subject: | SGP/EBBR/E26 - Invalid data during Preventative Maintenance |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | During a preventative maintenance visit the +12V DC supply to the wind direction sensor at E26, Cement, Ok was temporarily disconnected, resulting in invalid wind direction data for December 28, 1993 from 1645 through 1900 GMT. The following fields are therefore invalid for that period: 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 0000 | 02/02/1994 | 2359 |
Subject: | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Beginning October 10, 1993 the EBBR system at E26, Cement, OK began to have problems with outputs from soil moisture sensor number 2 and the wind direction sensor. This situation also occured in early 1993 and was eliminated by replacing the soil moisture sensor (after replacing the wind direction sensor did not help). This time, replacing the soil moisture sensor did not help, but the problem has not re-occured since the wind direction sensor was replaced on February 2, 1994. During periods of bad data the wind direction output is a constant 135 degrees and soil moisture two is offscale. Invalid data for a constant wind direction of 135 degrees is: 30 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 5 minute: res_ws, wind_d, sigma_wd. Invalid data for soil moisture 2 offscale is: 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e 15 minute: r_sm2 5 minute: no data affected. Apparent cause of data loss, if known: Apparently an electronic problem in interfacing an intermittently malfunctioning wind direction sensor to the data acquisition system multiplexer, thereby affecting the other sensor (soil moisture 2) on that multiplexer pair. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1994 | 1400 | 03/16/1994 | 1700 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The wind direction sensor malfunctioned, outputting nearly a constant value, invalidating the following data values. 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws The first good data after the affected period was the 1700 GMT, 30 minute data on March 16, 1994. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/1994 | 1600 | 03/17/1994 | 1630 |
Subject: | SGP/EBBR/E20 - Pressure Sensor Malfunction |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Pressure sensor malfunction during attempt to monitor it during Preventative Maintenance visit. 30 minute values of pressure for 1600 GMT and 1630 GMT, 15 minute values for 1600, 1615, and 1630, and 5 minute values for 1600, 1605, 1610, 1615, 1620, 1625, and 1630 GMT are incorrect. However, the range of the incorrect values was such as to not adversely affect flux measurements. Some noise was apparently induced in the pressure output voltage as a result of the monitoring, although it is not known how. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/1994 | 2200 | 05/25/1994 | 1645 |
Subject: | SGP/EBBR/E26 - Wind Speed Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | For an unknown reason, the wind speed sensor at Cement began to record very low wind speeds on a consistent basis, with most of the speeds recorded reflecting what appeared to be zero wind speed (calibration offset). When the sensor was replaced on 5/25/94, it was damaged, although this damage apparently did not occur until a thunderstorm around midnight (local time) May 24. The wind direction sensor was also damaged by the storm at the same time. At any rate, the wind speed data during the period listed should be considered questionable. The wind speed sensor was replaced on May 25, 1994 at 1639. Old sensor S/N K1032, New sensor S/N K1035. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/1994 | 0430 | 05/25/1994 | 1640 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Apparently, a fairly severe thunderstorm passed over the Cement, OK EBBR early on May 25, 1994 (around midnight May 24, local time). The storm damaged the wind direction sensor and the wind speed sensor. Wind Direction and Sigma of Wind Direction data for the period listed should be considered incorrect. The sensors were replaced on May 25, 1994 at 1631. Old sensor S/N K3038, New sensor S/N K3040. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/06/1994 | 1600 | 06/09/1994 | 1545 |
Subject: | SGP/EBBR/E20 - Soil Moisture Probe |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | Beginning on May 6, 1994, soil moisture probe #3 began a long decline in output and sensitivity until it stabilized at a low value of around 7, with virtually no sensitivity at midday (GMT) on May 22, 1994. The output remained around this low value until the probe was replaced on June 9, 1994 at 1545 GMT. Old Probe S/N 92038, New Probe S/N 93003. |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/1994 | 2100 | 08/17/1994 | 1700 |
Subject: | SGP/EBBR/E26 - Soil Moisture Sensor Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
Description: | Soil moisture sensor #1 at Cement, Ok, E26 began a slow drift downwards on July 31, 1994. This continued until the sensor was replaced at 1700 GMT on August 17, 1994. The downwards drift occured coincident with a constant decrease in soil moisture at the site. As a result, the average soil moisture (for the set of five sensors) was reduced by only about 2% (for a range of 10 to 22%), and thus had a negligible effect on the calculations of sensible and latent heat flux. The sm1 output dropped below zero at times during August 14-17. Soil Moisture #1 Data Fields: 15 minute: r_sm1 30 minute: sm1 |
Measurements: | sgp15ebbrE26.a1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/12/1994 | 1300 | 09/14/1994 | 1847 |
Subject: | SGP/EBBR/E20 - Fan Stopped, T and RH Biases |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Another fan stoppage situation occurred. This is the fourth one in the last few months and may indicate a weakening of the fans that aspirate the temperature, relative humidity housings. The 15 minute data reveals that the stoppage occurred at approximately 1300 GMT on September 12. The left fan was cleaned out by site operations personnel and began running again at 1847 GMT on September 14. The 15 minute data during this period shows that during daytime, the left temperature was greater than the right temperature and that the left relative humidity was lower than the right relative humidity (a consequence of greater temperature), irregardless of the positions of the housings. The bowen ratio, sensible heat flux and latent heat flux for this period, as well as all left housing temperatures and relative humidities are incorrect. The data values that are incorrect are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_l, mv_hum_l, tair_l, 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, thum_bot, vp_top, vp_bot, bowen, e, h Because of the increased frequency of fan stoppage occurrences, I have submitted a work request to site operations to use the portable vane anemometer to check the flow of the housing fans on each EBBR and visually check (and clean if needed) the fans for debris that would restrict the flow. Included in this work request are instructions for checking the performance of the temperature and relative humidity sensors by manually putting the aspirator housings at the same height for a half hour period (so that two 15 minute and one half hour comparison result). The latter part of the work request is prompted by my close inspection of the Meeker data for the last few weeks. It is clear that significant biases have developed in the pairs of temperature and relative humidity sensors; left thermocouple ~0.5 deg. C greater than right thermocouple, left relative humidity ~5% lower than right relative humidity. Biases were expected in operating the systems over long time periods, and these appear to be the result of simple offsets, not changes in calibrations. At this point, I just want to determine how large the offsets are. Comparison of these offsets between EBBR units, in light of the different lengths of time that EBBR units and individual sensors have been deployed, may provide some interesting information on likely offset changes with time. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/1994 | 1530 | 09/29/1994 | 1600 |
Subject: | SGP/EBBR/E20 - Soil Moisture Probe Failure |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | Soil moisture probe #4 went offscale for a short period, for unknown reasons. However, it may have resulted from Site Operations Preventative Maintenance activities that were taking place at the time. The times of incorrect values are listed below. 30 minute: 1600 GMT; sm4, c_shf4, cs4, ces4, g4, ave_shf, e, h 15 minute: 1600 GMT; r_sm4 |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/1994 | 1530 | 09/29/1994 | 1730 |
Subject: | SGP/EBBR/E20 - Aspirator Fan Stoppage |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | During Site Operations Preventative Maintenance activities the left AEM fan stopped operating. This affected some of the data being collected. The times of incorrect values are listed below. 15 minute: 1530-1715 GMT; tair_l, mv_hum_l, rr_thum_l 30 minute: 1530-1730 GMT; thum_top, thum_bot, tair_top, tair_bot, hum_top, hum_bot, e, h, bowen |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/1994 | 0430 | 12/07/1994 | 0800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | I have written a number of previous PIFs and DQRs about this same problem previously. This occurred most recently at E9, Ashton, KS in August 1994. The wind direction sensor is on the same data acquisition system multiplexer pair as soil moisture sensor 2. Sometimes a malfunctioning wind direction sensor (resulting in a constant wind direction of 135 degrees) will cause the soil moisture 2 measurement to be offscale. Between 0430 and 0800 GMT the wind direction sensor did not function properly at E22, Cordell, KS. As has often been the case, soil moisture measurements were affected for a shorter time period, from 0500 through 0730 GMT. The cause of this problem is unknown and only occurs on the multiplexer pair to which the wind direction sensor is connected, not on any other pair to which a soil moisture sensor is attached. None of the manufacturers of the applicable equipment can explain the problem. As done before, I will monitor the data for further occurrences of this condition; if the frequency of occurrence increases, further action will be taken. The following data and times are incorrect: Winds: 0430-0800 GMT 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws Soil Moisture 2: 0500-0730 GMT 15 minute: r_sm2 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/1994 | 1615 | 11/09/1994 | 1800 |
Subject: | SGP/EBBR/E26 - T/RH Check |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | During the month of November 1994, site operations personnel conducted field comparisons of the temperature and relative humidity sensors in the EBBRs and the HMI31 portable T/RH meter (with the removable probe). As is reflected in the home signal output, the automatic exchange mechanism was disabled in order to conduct the checks. Measurements were taken every 5 minutes, for a half hour each in the aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated radiation shield to provide the same aspiration as the EBBR sensors received). Measurements of aspirator flow were also recorded. This information was provided to the mentor. The mentor then compared the field checks with the data recorded by the EBBRs. The periods of data and data fields that are incorrect because of the checks are listed below. Times are those at which the data are reported. Data Fields 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 5 minute: 1615, 1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735 15 minute: 1615, 1630, 1645, 1700, 1715, 1730, 1745 30 minute: 1630, 1700, 1730, 1800 (EDITOR'S NOTE: The following analysis refers to all EBBRs installed in Nov 1994) Results of the T/RH comparisons: The combined accuracy of the HMI31 and EBBR temperature sensors (thermocouples or PRTDs) is +/- 0.4 degrees C. The combined accuracy of the HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH greater than 80%. The combined accuracy for each pair of EBBR sensors of the same type is essentially the same as the quantities stated above. All of the pairs of EBBR sensors show differences that fall within the stated combined accuracies. Although this sounds wonderful, a few of the differences are close to the combined accuracy, which, because of the small differences in temperature being measured (normally smaller than the magnitude of the combined accuracy) could lead to some incorrect estimation of sensible and latent heat flux. However, unless there would be substantial differences of calibration slope of two sensors in a pair, the switching of height of the sensors every 15 minutes by the automatic exchange mechanism will remove the offset between the sensors. The comparisons between the EBBR sensors and the HMI31 T/RH meter showed much larger differences. The range of differences were: -2.4 to 0.0 degrees for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to 6.7 percent for the RH sensors. Six Thermocouples indicated differences from the HMI31 greater than the combined accuracy. Seven PRTDs indicated differences from the HMI31 greater than the combined accuracy. Four RH sensors indicated differences from the HMI31 greater than the combined accuracy. The temperature differences (for both thermocouples and PRTDs) were nearly all of one sign; the HMI31 indicated the greater temperature, which may suggest a bias in the HMI31 temperature measurement, even though a dozen differences of +/- 0.2 degrees were measured. Four differences of zero and only one positive difference (out of 40) were measured. Thirteen of the 20 RH differences were positive (HMI31 indicating the lower RH), with the differences near the level of the combined accuracies being approximately 50% positive and 50% negative. It does not appear that the HMI31 has a RH bias. Plots of EBBR sensor/HMI31 differences as a function of time from the installation of the individual sensors (a range of 10 to 30 months in the field) shows no obvious pattern of sensor drift with time. This is encouraging. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/1995 | 1500 | 02/17/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On February 16, 1994 a frontal system deposited freezing rain in central Oklahoma that resulted in the EBBR wind speed instrument becoming frozen in place at Cement (E26) for part of two days. All 5, 15, and 30 minute data values indicated below are incorrect for all times within the period indicated. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/1995 | 1230 | 04/12/1995 | 0615 |
04/12/1995 | 1315 | 04/12/1995 | 1400 |
Subject: | SGP/EBBR/E26 - Stopped Ventilation Fan |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On April 11, 1995, a site operator discovered the right aspirator ventilation fan of the EBBR to be stopped. Inspection of the data indicates that this condition occurred during the two periods shown above; the fan apparently worked briefly inbetween the periods. Lack of ventilation of the temperature and relative humidity sensors attached to the AEM results in incorrect measurements of air temperature and relative humidity by the right aspirator probes, and therefore all quantities calculated from them, including sensible and latent heat fluxes, are incorrect as well. The quantities that are incorrect for the periods indicated are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, and vp_bot 15 minute: rr_thum_r, mv_hum_r, tair_r 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/1995 | 1945 | 04/26/1995 | 2000 |
Subject: | SGP/EBBR/E26 - Reprocess: Soil Heat Flow Sensor 1 Replacement |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
Description: | During preventative maintenance, site operations personnel observed that soil heat flow sensor #1 at Cement, OK (E26) was outputting larger values than the other four sensors. Therefore, they replaced sensor #1. A review of the data indicates that the sensor was not malfunctioning, but that its calibration was just too large. The longer the sensors are in the ground, the greater the likelihood that they will drift from their original calibration. The difference in the average soil heat flux caused by the #1 sensor data values being included in the average will have less than a 5% affect on the calculated latent and sensible heat fluxes. The data should therefore not be labelled as incorrect. However, during the replacement of sensor #1, the #1 data was spiked, causing the following data values to be incorrect for the period listed: 15 minute: mv_hft1 at 1945 GMT. 30 minute: shf5, c_shf5, g5, ave_shf, e, h, bowen at 2000 GMT. The latent and sensible heat fluxes can be recalculated by using only soil heat flows 2 through 5 to calculate the average soil heat flow, ave_shf = (g2 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q). |
Measurements: | sgp15ebbrE26.a1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/1995 | 1705 | 05/16/1995 | 1900 |
05/24/1995 | 1930 | 05/28/1995 | 0100 |
05/28/1995 | 0130 | 06/01/1995 | 1630 |
06/05/1995 | 1730 | 06/05/1995 | 1900 |
06/06/1995 | 1530 | 06/06/1995 | 1900 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The right air temperature probe malfunctioned continuously during the periods of time indicated above as continuous. On May 16, 1995, by 1900 GMT, the probe was replaced (old S/N 92007, new S/N 92013). There was a complete loss of data between 1200 and 1900 GMT as Site Operations repaired a corroded battery terminal. For several days the right air temperature probe worked well. However, between May 24 and 28, the right air temperature probe malfunctioned continuously again. The right air temperature probe malfunctioned intermittently between May 28 and June 1, as well as during short periods on June 5 and 6. The cause of these latter periods is unknown; the time periods do not correspond with any Site Operations activities. During the intermittent periods the data that is not offscale should be viewed as questionable, as it is not always easy to detect what effect the malfunction might have had on that data. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the periods indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, h. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1995 | 0555 | 03/07/1995 | 2145 |
Subject: | SGP/EBBR/E20 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Meeker, OK (E20). All 5, 15, and 30 minute data values indicated below are incorrect for the period listed above. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/1995 | 2205 | 03/07/1995 | 2230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On March 6, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Cement, OK (E26). All 5, 15, and 30 minute data values indicated below are incorrect for the period listed. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/1995 | 2000 | 03/19/1995 | 0500 |
03/19/1995 | 1905 | 04/12/1995 | 1430 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | A broken lead on the EBBR wind speed instrument cable at Cement, OK (E26) resulted in the loss of wind speed data. It was nearly a month before the cable could be repaired and reinstalled. All 5, 15, and 30 minute data values indicated below are incorrect for the periods listed above. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/18/1995 | 0400 | 07/18/1995 | 1400 |
07/19/1995 | 0430 | 07/19/1995 | 0500 |
07/19/1995 | 0730 | 07/19/1995 | 1500 |
07/29/1995 | 0700 | 07/29/1995 | 1630 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature Malfunction |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | During parts of three days, soil temperature probe #4 indicated values that were either too high or too low, for unknown reasons. Site Operations personnel checked connections and repacked the soil around the probe on 21 July at about 1535 GMT, although ts4 had recovered to proper values the previous day. The times of incorrect data and the affected quantities are shown below. Some of the ts4 values during the listed periods appear to be correct, although the change in energy storage values appear to indicate otherwise. 18 July: 0400-1400 GMT 19 July: 0430-0500, 0730-1500 GMT 29 July: 0700-1630 GMT 15 minute: rr_ts4 30 minute: ts4, ces4, g4, ave_shf, e, h Sensible, latent, and soil heat fluxes need to be recalculated using the change in energy storage of probes 1-3 and 5, as follows. ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q) |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/1995 | 0930 | 08/09/1995 | 2030 |
Subject: | SGP/EBBR/E20 - Annual Calibration Changeout |
DataStreams: | sgp30ebbrE20.a1 |
Description: | On August 9, 1995 between 0930-2030 GMT, the changeout for annual calibration occurred at E20, Meeker, OK. Soil measurements data should be used with caution for the following week at least, as the sensors require time to "settle" into the soil. |
Measurements: | sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/1995 | 2030 | 08/16/1995 | 2359 |
Subject: | SGP/EBBR/E20 - AEM Home 30 Values Low |
DataStreams: | sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The first EBBR to achieve annual calibration changeout was Meeker, Ok, E20. However, soon after changeout on August 9, 1995, the home 30 value dropped below 15, intermittently, to typically 0.3 to 0.5; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 30 is 15 to 34.999999. However, no data is incorrect as a result of this condition. No replacement AEM is available, as the changeout kit AEMs are somewhat different from the initial units. Site operations hopes to have time to diagnose the problem on the next PM visit and correct the problem. At present, data quality is not jeopardized. I will submit another DQR or addendum when successful replacement of the AEM is accomplished. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM not exchanging |
DataStreams: | sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. The AEM will remain in this condition until a replacement is available. Therefore, the calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times after August 26, 1995 at 0345 GMT. The data fields listed below are incorrect after this time: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h. It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM replacement |
DataStreams: | sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Please see DQR P950908.2, where this problem was first documented. On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. On 12 September 1995 the AEM was replaced at 1959 GMT (old S/N 92004, new S/N 92008) and is functioning properly. Calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times during the period above. The data fields listed below are incorrect during the period: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h. It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/1995 | 2100 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Battery Voltage Drop |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Shortly after the PM visit on September 26, 1995 the EBBR battery voltage at E26, Cement, OK declined to lower than acceptable levels. During the October 13, 1995 PM visit the battery was replaced. I do not know the specifics of why the battery voltage declined so suddenly, but failure of one or more of the battery cells is a possibility. I have not received the site operations log of the PM visit yet. The voltage dropped to 10 volts at night. At various times, soil temperature, soil heat flux plate output, and atmospheric pressure (at least) were not reported correctly by the CR10 datalogger. Amazingly, the AEM continued to work and reported millivolt outputs that did not fall below the acceptable ranges. All data between 2100 GMT on September 26, 1995 and 1230 GMT on October 13, 1995 should be considered suspect, particularly when the battery voltage fell below 11 volts (every nighttime). This general caution is issued because incorrect reporting of data also took place during times when the battery voltage was reported as 12 Volts, a normally acceptable level; the reason for this behavior is unknown. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/12/1995 | 0000 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Net Radiometer Dome Punctured |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The upper dome of the net radiometer was punctured sometime between the PM visits of September 12 and 26, 1995. After the puncture, water collected in the top hemisphere. The water was removed on September 26, but a replacement dome was not available. The dome was replaced during the PM visit on October 13, 1995. The puncture and water did not result in obviously incorrect data. I cannot tell when the puncture occurred from the data. The data, particularly during the two weeks between September 12 and 26, 1995, should be considered suspect. Suspect net radiation data results in the latent heat flux and sensible heat flux also being suspect. Suspect data then includes: 5 minute: q 15 minute: mv_q 30 minute: q, e, h. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/1995 | 1530 | 10/05/1995 | 1830 |
Subject: | SGP/EBBR/E9 - 3-month Check |
DataStreams: | sgp15ebbrE9.a1, sgp30ebbrE9.a1, sgp5ebbrE9.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. |
Measurements: | sgp5ebbrE9.a0:
sgp15ebbrE9.a1:
sgp30ebbrE9.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/1995 | 0000 | 10/25/1995 | 2359 |
Subject: | SGP/EBBR/E22 - Missing data |
DataStreams: | sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | The EBBR 9 pin serial line was plugged into the wrong modem (as per site ops log notes) during a PM visit. Data was not collected remotely for two weeks as a result. I will include this period in my list of missing data days to Ken Yates for sneakernet ingest, but I write of it here because it is a long period of (presently) missing data. |
Measurements: | sgp30ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/1995 | 1545 | 11/01/1995 | 1845 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On 1 November 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale for a few hours. The cause for this is unknown and the sensor recovered fully. Incorrect data for the period above includes: 5 minute: tair_top, tair_bot 15 minute: tair_r, tair_l 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0700 | 11/11/1995 | 0730 |
Subject: | SGP/EBBR/E13 - AEM Exchange Stopped in Snow and Freezing Rain |
DataStreams: | sgp30ebbrE13.a1 |
Description: | On the night of November 10-11, a north-south line from south central Kansas through south central Oklahoma received snow and freezing rain and experienced below freezing temperatures. This caused the EBBR automatic exchange mechanism (AEM) to stop exchanging temporarily. Note that temperatures, relative humidities, and vapor pressures are not affected; these are correct as measured, but the height at which the measurements occurred must be determined from the home signal value. |
Measurements: | sgp30ebbrE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/10/1995 | 0030 | 11/10/1995 | 1530 |
Subject: | SGP/EBBR/E20 - Soil Heat Flow Zero Under Unchanging Conditions |
DataStreams: | sgp30ebbrE20.a1 |
Description: | This DQR is written to inform users of the data that the EBBR soil heat flow measurements of zero during much of 11 November 1995 at E20, Meeker, OK are correct values. Nearly unchanging conditions of net radiation, air temperature, and soil moisture, plus high wind speeds and near neutral atmospheric stability, resulted in almost unchanging conditions of soil temperature and ten and a half hours of zero soil heat flow output from all soil heat flow plates (some plates outputted zero for longer than this). The change in energy storage (determined from the change in temperature with time of the soil above the plates) was very nearly zero also during the period of interest. Such an extended period of zero soil heat flow and the accompanying unchanging soil and atmospheric conditions is quite rare and therefore worth noting here in case someone using the data might mistakenly think that the data is incorrect. |
Measurements: | sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0240 | 11/11/1995 | 1505 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Freezing rain, snow, and below freezing conditions during the night of 10-11 November 1995 resulted in the wind speed sensor cups becoming frozen in a stopped state at E26, Cement, OK on early 11 November 1995. When temperatures rose to almost freezing under cloudless skies later in the day, the ice thawed and the cups were free to turn again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 2110 | 12/19/1995 | 1425 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Freezing rain, snow, and below freezing conditions during 18-19 January 1995 caused the wind speed sensor cups to freeze in a stopped state at E26, Cement, OK on 18 January 1995. When temperatures rose to above freezing on 19 January, the ice thawed and the cups turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 1705 | 12/19/1995 | 1450 |
Subject: | SGP/EBBR/E22 - Wind Speed Cups Frozen |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | Freezing rain, snow, and below freezing conditions during 18-19 January 1995 caused the wind speed sensor cups to freeze in a stopped state at E22, Cordell, OK on 18 January 1995. When temperatures rose to above freezing on 19 January, the ice thawed and the cups turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/1995 | 1630 | 12/31/1995 | 1930 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On 26 and 31 December 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown and the sensor recovered fully. Five minute data would need to be inspected during the periods above for incorrect five minute values. Site Operations has been asked to check the sensor connections. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1996 | 1515 | 01/05/1996 | 0430 |
01/07/1996 | 2015 | 01/07/1996 | 2330 |
01/08/1996 | 1545 | 01/09/1996 | 1330 |
01/09/1996 | 2000 | 01/09/1996 | 2030 |
Subject: | SGP/EBBR/E26 - Right tair Offscale |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On five days in January 1996 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown, although poor probe connections are common. Site Operation personnel tightened the probe connections in mid January. Five minute data would need to be inspected during the periods indicated for incorrect five minute values. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e The data are not recoverable from other measurements. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/31/1996 | 1430 | 01/31/1996 | 1500 |
02/10/1996 | 0230 | 02/10/1996 | 1300 |
02/10/1996 | 1400 | 02/10/1996 | 1600 |
02/11/1996 | 0100 | 02/11/1996 | 0900 |
02/11/1996 | 1030 | 02/11/1996 | 1400 |
02/11/1996 | 1730 | 02/12/1996 | 0100 |
02/12/1996 | 1200 | 02/12/1996 | 1230 |
02/12/1996 | 1600 | 02/12/1996 | 1830 |
02/13/1996 | 0130 | 02/13/1996 | 0230 |
02/13/1996 | 1400 | 02/13/1996 | 1430 |
02/13/1996 | 1600 | 02/13/1996 | 1700 |
02/14/1996 | 0130 | 02/14/1996 | 0230 |
02/23/1996 | 0330 | 02/23/1996 | 0530 |
02/23/1996 | 1200 | 02/24/1996 | 0200 |
02/28/1996 | 2330 | 02/29/1996 | 0000 |
03/03/1996 | 0130 | 03/03/1996 | 0200 |
03/03/1996 | 1500 | 03/03/1996 | 1830 |
03/04/1996 | 0100 | 03/04/1996 | 0230 |
03/04/1996 | 0400 | 03/04/1996 | 1530 |
03/05/1996 | 1200 | 03/05/1996 | 1430 |
03/05/1996 | 1630 | 03/05/1996 | 1830 |
03/06/1996 | 0200 | 03/07/1996 | 0430 |
03/07/1996 | 2030 | 03/07/1996 | 2130 |
03/07/1996 | 2300 | 03/07/1996 | 2330 |
03/08/1996 | 0330 | 03/08/1996 | 1730 |
03/10/1996 | 0400 | 03/10/1996 | 1130 |
03/12/1996 | 0400 | 03/12/1996 | 1130 |
03/12/1996 | 1430 | 03/12/1996 | 1600 |
03/13/1996 | 0830 | 03/13/1996 | 1130 |
03/15/1996 | 0400 | 03/15/1996 | 2200 |
03/16/1996 | 0400 | 03/16/1996 | 0830 |
03/16/1996 | 1030 | 03/16/1996 | 1200 |
03/16/1996 | 1500 | 03/16/1996 | 1700 |
03/17/1996 | 0600 | 03/17/1996 | 0630 |
03/17/1996 | 0730 | 03/17/1996 | 2030 |
03/18/1996 | 0300 | 03/18/1996 | 1730 |
03/19/1996 | 0130 | 03/20/1996 | 1430 |
03/20/1996 | 1700 | 03/20/1996 | 1830 |
03/21/1996 | 0200 | 03/21/1996 | 0230 |
03/22/1996 | 0330 | 03/22/1996 | 0400 |
03/22/1996 | 1600 | 03/22/1996 | 1700 |
03/23/1996 | 0400 | 03/23/1996 | 1930 |
03/24/1996 | 2200 | 03/25/1996 | 1500 |
03/27/1996 | 1800 | 03/27/1996 | 2000 |
Subject: | SGP/EBBR/E22 - Reprocess: Soil Heat Flow Sensor 4 Incorrect Data |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Soil heat flow sensor #4 periodically output incorrect values during the period indicated. The output often indicated large negative heat flow. The sensor was replaced on March 19, 1996, which corrected the problem. The data affected (and thus incorrect) includes: 15 minute: mv_hft4 30 minute: shf4, c_shf4, g4, ave_shf, e, h. The dates and times (GMT) of incorrect values are listed below. Only half hour data times are listed. 01/31/96 1500 (shf4 only) 02/10/96 0230-1300, 1400-1600 02/11/96 0100-0900, 1030-1400, 1730-2330 02/12/96 0000-0100, 1200-1230, 1600-1830 02/13/96 0130-0230, 1430, 1600-1700 02/14/96 0130-0230 02/23/96 0330-0530, 1200-2330 02/24/96 0000-0200 02/29/96 0000 03/03/96 0130-0200, 1500-1830 03/04/96 0100-0230, 0400-1530 03/05/96 1200-1430, 1630-1830 03/06/96 0200-2330 03/07/96 0000-0430, 2030-2130, 2330 03/08/96 0330-1730 03/10/96 0400-1130 03/12/96 0400-1130, 1430-1600 03/13/96 0830-1130 03/15/96 0400-2200 03/16/96 0400-0830, 1030-1200, 1500-1700 03/17/96 0630, 0730-2030 03/18/96 0300-1730 03/19/96 0130-2330 03/20/96 0000-1430, 1700-1830 03/21/96 0230 03/22/96 0400, 1600-1700 03/23/96 0400-1930 03/24/96 2200-2330 03/25/96 0000-1500 03/27/96 1800-2000 The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1, 2, 3, and 5 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1996 | 1715 | 04/01/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The cause of the problem is unknown. The right air temperature probe appears to be working well presently. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period above. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r (1715-1830 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1730-1830 GMT values) |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1996 | 1500 | 04/23/1996 | 2115 |
Subject: | SGP/EBBR/E26 - Right Air Temp Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The probe (S/N 92013) was replaced by Site Operations on 23 April 1996 at 2115 GMT with S/N 92002. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r (1515-2115 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1530-2130 GMT values) |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/1995 | 0000 | 05/08/1996 | 1755 |
Subject: | SGP/EBBR/E20 - Temperature/RH Probes Malfunction and Replacement |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
Description: | Beginning on approximately October 1, 1996 the calibration of the temperature sensor in one or both T/RH probes began to drift; temperatures started to drift higher than the thermocouple probes. This drift caused the upper and lower temperatures measured by the T/RH probe to be 2 to 10 degrees C greater than the thermocouple probes. Comparison with adjacent EBBR sites shows that the thermocouples were measuring properly. The problem affected the vapor pressure outputs primarily, making them as much as 1 kPa greater than they should be (vapor pressure is calculated from probe temperature and relative humidity). The effect on sensible and latent heat fluxes was negligible, although latent heat flux may be overestimated by about 5% presently and sensible heat flux underestimated by approximately the same percentage. Site operations replaced the T/RH probes on 8 May 1996; the new probes are performing well. The serial numbers of replaced probes are: Left 632415, Right 632356. New probe serial numbers are: Left 460428, Right 460412. |
Measurements: | sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/1996 | 1820 | 04/09/1996 | 2000 |
Subject: | SGP/EBBR/E26 - 3-month check |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/10/1996 | 1500 | 04/10/1996 | 1830 |
Subject: | SGP/EBBR/E20 - 3-month check |
DataStreams: | sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | During EBBR 3-month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed above; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/1996 | 1315 | 04/24/1996 | 1402 |
Subject: | SGP/EBBR/E22 - 3-month check |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed in the times indicated; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/1996 | 1015 | 08/13/1996 | 1800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Wind Direction and resultant wind speed data for the period listed above is incorrect. Wind direction would not record outside 0 to 20 degrees. This is a common malfunction in this style of wind direction sensor. The sensor was replaced on 13 August 1996. The old sensor S/N was K3038 and new sensor is S/N K3033. The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/12/1996 | 0000 | 07/05/1996 | 2359 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The right air temperature probe malfunctioned again and produced incorrect data (outside of range) during some of the period indicated above. The cause of the problem is unknown. On 18 June site operations tightened the connection to the J-panel and repaired a broken aspirator fan wire. However, incorrect data resumed shortly after site operations left the site. Data continued to be incorrect during some times through July 5. No incorrect data was recorded from July 6 through July 17. The EBBR unit was changed out on July 17, 1996. The times of incorrect right air temperatures are easy to recognize from the EBBR data, so the precise times of incorrect data are not enumerated here. Typically, the top and bottom air temperature is out of range, resulting in the sensible heat flux being zero. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, and h |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/1996 | 2145 | 06/19/1996 | 1700 |
Subject: | SGP/EBBR/E20 - Incorrect Data from Left Humidity Probe |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | The left humidity probe output started drifting upward at 2145 GMT on May 8, 1996 and went offscale (over 105%) at 0200 GMT on May 9, 1996. The output settled at approximately 113% and remained there until the probe was replaced on June 19, 1996. The first correct 15 minute values were at 1630 GMT on June 19 and the first correct 30 minute values were at 1700 GMT. During the period of incorrect left probe RH data, the following values were incorrect: 15 minute: mv_hum_l 30 minute: hum_top, hum_bot, vp_top, vp_bot, h, e, bowen. |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/1996 | 1804 | 10/31/1996 | 1840 |
Subject: | SGP/EBBR/E4 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp15ebbrE4.a1, sgp30ebbrE4.a1, sgp5ebbrE4.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
Measurements: | sgp5ebbrE4.a0:
sgp15ebbrE4.a1:
sgp30ebbrE4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 1300 | 11/06/1996 | 2300 |
Subject: | SGP/EBBR/E22 - Annual Calibration Changeout |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | On 6 November 1996 the EBBR changeout for annual calibration occurred at E22, Cordell, OK. SEBS unit 7 was removed and unit 3 was installed. Between 1300 and 2300 GMT no data or incorrect data was collected; most of the data is missing. Data for half hour 1930 GMT on 7 November is incorrect; 3 month calibration checks were being performed. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/1996 | 1500 | 07/16/1996 | 2230 |
Subject: | SGP/EBBR/E26 - Annual Calibration Changeout |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | On 16 November 1996 the EBBR changeout for annual calibration occurred at E26, Cement, OK. SEBS unit 2 was removed and unit 8 was installed. Between 1500 and 2230 GMT no data or incorrect data was collected; most of the data is missing. 3 month calibration checks were being performed. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Wind Direction and resultant wind speed data for much of the period listed above is incorrect. Wind directions of 135, 0, or 360 would continue for extended periods. This behavior is indicative of a failed sensor. This is a common malfunction in this style of wind direction sensor. A work request has been submitted to site operations for replacement of the sensor. All values of 135, 0, and 360 should be considered to be incorrect during the period above. Furthermore, more incorrect data may occur until the sensor is replaced (by 6 December). The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/1996 | 1010 | 11/25/1996 | 1805 |
Subject: | SGP/EBBR/E20 - Wind Speed Cups Frozen |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Freezing rain, snow, and below freezing conditions during 24 November 1996 caused the wind speed sensor cups to freeze in a stopped state at E20, Meeker, OK. On 25 November, the cups broke free of the ice and turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1825 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Wind Direction and Sigma of Wind Direction data for the period listed is incorrect. The wind direction sensor began to malfunction on 6 November, with the characteristic constant 135 degree output. At other times the output remained a nearly constant 230 to 240 degrees. On 16 November at 1819 GMT site operations replaced sensor S/N 3033 with S/N 3036. Apparently they left it aligned at north when they left the EF; output for the next few days was 0 or 360 degrees, until they returned on 19 November at 1825 GMT and gave the vane it's freedom. Affected fields are: 5 minute: wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/1996 | 1930 | 06/17/1997 | 2030 |
Subject: | SGP/EBBR/E26 - Reprocess: E26 Soil Heat Flow Sensor 1 Replacement |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1 |
Description: | Apparently, during installation of the present system on 17 July 1996, soil heat flow sensor #4 was intentionally placed upside down in the soil to produce the correct sign of flux. The leads from the sensor must have been connected with the wrong polarity. On 3 December 1996 site operations corrected some wiring problems and reconnected soil heat flow sensor #4 according to the proper color code; this caused the sign of the soil heat flow from that sensor to then be opposite of the other four sensors. All data from sensor #4 is the wrong sign during the period listed above. On 17 June 1997 site operations removed the sensor and installed it with the correct side up, fixing the problem. The result of this problem was a decrease of reported average soil heat flow of approximately 40%. This translates into a 0 to 20% error in latent and sensible heat fluxes (soil heat flow is rarely more than 50% of net radiation, upon which the Bowen ratio calculation depends). Therefore, sensible and latent heat fluxes were typically overestimated by about 10% during the daytime. This is of the same magnitude as the EBBR system/technique error. The following data values were affected for the period listed above: 15 minute: mv_hft4 30 minute: shf4, c_shf4, g4, ave_shf, e, h The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1, 2, 3, and 5 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q). |
Measurements: | sgp15ebbrE26.a1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/14/1997 | 0000 | 04/09/1997 | 1730 |
Subject: | SGP/EBBR/E22 - Reprocess: E22 Soil Heat Flow Sensor # 5 Incorrect Data |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Soil heat flow sensor #5 frequently produced large negative (and incorrect) values during the period above. The problem ended during a PM visit by site operations. However, there is no documentation by Site Operations in the instrumentation report or corrective maintenance report that Site Operations personnel took action to correct the problem. Site Operations also told me that they have no record of any changes or corrective maintenance. Apparently, something fortuitous happened during the PM to correct the problem. The start date and time of the problem cannot be determined exactly, but it did begin during a period of missing data from Feb. 14-25, 1997. Values affected (and thus incorrect) include: 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h. The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1, 2, 3, and 4 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1997 | 0000 | 07/16/1997 | 2359 |
Subject: | SGP/EBBR/E20 - Reprocess: E20 Soil Probes #3 Cables Cut |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1 |
Description: | The cables going to #3 soil temperature, moisture, and heat flow probes were cut by a mower on 11 June 1997 and were repaired on 16 July 1997. Data for the temperature probe was offscale, for the soil moisture probe was a constant 10.1 (close to the actual), and for the soil heat flow was large negative during the period. The following are the data quantities that were affected: 15 minute: rr_ts3, mv_hft3, r_sm3 30 minute: ts3, ces3, shf3, c_shf3, cs3, g3, ave_shf, e, h Sensible, latent, and soil heat fluxes can be recalculated using the values from probes 1, 2, 4, and 5, as follows. ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q) |
Measurements: | sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/1997 | 0305 | 07/16/1997 | 1500 |
Subject: | SGP/EBBR/E22 - Right Aspirator Unit Stolen |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | On 13 June 1997, vandals stole the right AEM aspirator unit, including the thermocouple and T/RH probe inside. These were replaced on 16 July 1997. Incorrect data fields during the period above are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, mv_hum_r, tair_r 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/30/1997 | 1700 | 07/30/1997 | 1830 |
Subject: | SGP/EBBR/E22 - Reprocess: E22 EBBR Soil Heat Flow Probe #5 Incorrect Data |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Soil heat flow probe #5 produced large negative (and incorrect) values during the period above. The probe was replaced. Somehow, two half hour records were produced at 1900 GMT as a result, the first record having 9s for the data fields; the second record is correct. Values affected (and thus incorrect) include: 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h. The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1, 2, 3, and 4 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/1997 | 1533 | 04/16/1997 | 1625 |
Subject: | SGP/EBBR/E7 - EBBR Biannual Checks |
DataStreams: | sgp15ebbrE7.a1, sgp30ebbrE7.a1, sgp5ebbrE7.a0 |
Description: | During EBBR 6-month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
Measurements: | sgp15ebbrE7.a1:
sgp30ebbrE7.a1:
sgp5ebbrE7.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/29/1997 | 1400 | 09/02/1997 | 1300 |
Subject: | SGP/EBBR/E26 - Missing Data |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Data was not collected remotely for the period indicated. The reason is unknown. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/10/1997 | 0000 | 09/10/1997 | 2359 |
Subject: | SGP/EBBR/E26 - Bad Dates |
DataStreams: | sgp30ebbrE26.a1 |
Description: | At the end of the netcdf 30 minute file for 10 September 1997 there are two half hours with date 9 September 1997, and time 2200 GMT. It is unknown how this happens, but it does occasionally. Those two half hour records should be ignored. |
Measurements: | sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/27/1997 | 0000 | 05/06/1998 | 1645 |
Subject: | SGP/EBBR/E25 - Bowen Ratio Usually Negative - Fluxes Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | Submitted By: _x_ Instrument Mentor ___ EST Member ___ Science Team Member ___ Other Platform/Measurement: EBBR/Bowen ratio, sensible and latent heat fluxes What level data: (raw,a0,a1,b1,c1 etc): a1 (15 and 30 minute) What location was the data collected at: E25, Seminole, OK Period of time in question (Times vary for different days) Begin Date 10/22/97 and on Discussion of Problem: Bowen ratio is normally negative, as if it is somehow being biased. Latent and sensible heat fluxes are apparently incorrect much of the time, especially during the daytime. All supporting measurements seem to be incorrect; therefore the error must be occurring in the measured T and RH gradients. This situation has occured since the EBBR unit was installed on 22 October 1997. A work request has been submitted for a full six month check to be performed on the system. Hopefully the checks will point to the source of the problem. The right relative humidity was biased. The right T/RH probe was replaced on 4/22/98 at 1700 GMT, but it had a more defective RH sensor in it, causing right RH to sit at 112-114 percent. This probe was itself replaced on 5/6/98 at 1645 GMT, thereby taking care of the negative Bowen ratio problem. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1998 | 0100 | 01/08/1998 | 2030 |
Subject: | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The EBBR AEM stopped exchanging because of icing at during this time period. The calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for the time period indicated. The other measurements listed are also incorrect for those times: |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/24/1997 | 1530 | 01/08/1998 | 1515 |
Subject: | SGP/EBBR/E2 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp15ebbrE2.a1, sgp30ebbrE2.a1, sgp5ebbrE2.a0 |
Description: | The upper dome of the EBBR net radiometers was punctured. After the puncture, water collected in the top and/or bottom dome. The water was removed and the dome was replaced during PM visits. In some cases, the puncture and water resulted in incorrect data. Comparison with net radiation values from surrounding EBBR sites and the SIRS is neccesary to determine if the EBBR net radiation data are correct or incorrect. It is often difficult to tell from the data when the punctures occurred, but they would have existed for no more than 2 weeks, since the domes are checked during each two-weekly PM visit. Incorrect net radiation data results in the latent heat flux and sensible heat flux also being incorrect. |
Measurements: | sgp15ebbrE2.a1:
sgp5ebbrE2.a0:
sgp30ebbrE2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/13/1998 | 0330 | 01/15/1998 | 1630 |
Subject: | SGP/EBBR/E20 - Wind Speed Sensor Frozen |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
Description: | The wind speed sensor was frozen during the period. Data values that were incorrect are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/1998 | 1430 | 02/11/1998 | 2100 |
Subject: | SGP/EBBR/E20 - Data Missing |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Apparently, SIRS conversion caused a loss of data retrieval from the EBBR. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/1998 | 0300 | 01/15/1998 | 1415 |
Subject: | SGP/EBBR/E22 - Low Battery - Resulting In Incorrect Data |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | A low battery condition (less than 10.5 volts) caused a number of data fields to be incorrect at some times and all data fields to be incorrect at a more limited number of times. All data fields are suspect when the battery voltage drops below 10.5 volts because the CR10 cannot operate properly. Some sensors are affected slightly (i.e. pressure) at slightly larger voltages. The low battery condition resulted from an initially weak battery and a week of extremely low solar radiation (from heavy cloudiness) on the solar panel that provides most of the charging of the battery. Comments added by Marv Wesely: David Cook has been working with Dave Breedlove to try to assess the age of the batteries. The dates on the batteries needs to be read during site visits and provided to David C. It's quite possible that they need to be replaced. It's work in progress, though slow at times. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/22/1997 | 1645 | 10/22/1997 | 1705 |
Subject: | SGP/EBBR/E20 - 3 Month Check |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/08/1997 | 1830 | 10/08/1997 | 1902 |
Subject: | SGP/EBBR/E22 - 3-Month Check |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1997 | 2125 | 10/21/1997 | 2148 |
Subject: | SGP/EBBR/E26 - 3-Month Check |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/1997 | 0130 | 06/18/1997 | 0200 |
Subject: | SGP/EBBR/E26 - Character In EBBR E26, 30 Minute Data |
DataStreams: | sgp30ebbrE26.a1 |
Description: | A non-numeric character appears in the field for shf1 in the 30 minute data file at the time shown. Data processing programs that assume that a numeric character is there will display an error condition. I had to create a short routine to put in my analysis program to avoid using that data point. |
Measurements: | sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/1998 | 1800 | 05/06/1998 | 1740 |
Subject: | SGP/EBBR/E25 - Right Humidity Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | On 24 April 1998 the humidity reported by the right T/RH probe soared to 112% to 114% and remained there until replacement of the probe on 6 May 1998. Sensible and latent heat fluxes and some humidity and vapor pressure data for the period are incorrect. The data fields that are incorrect are: 5 minute: hum_top, hum_bot, vp_top, vp_bot 15 minute: mv_hum_r 30 minute: hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/1998 | 1450 | 05/20/1998 | 1530 |
Subject: | SGP/EBBR/E20 - Six Month Checks |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/06/1998 | 1800 | 05/06/1998 | 1840 |
Subject: | SGP/EBBR/E22 - Six Month Checks |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/1998 | 1948 | 05/21/1998 | 2030 |
Subject: | SGP/EBBR/E25 - Six-Month Checks |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | During EBBR 6-month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/1998 | 1646 | 05/19/1998 | 1717 |
Subject: | SGP/EBBR/E26 - Six Month Checks |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/17/1998 | 1945 | 06/17/1998 | 2010 |
Subject: | SGP/EBBR/E22 - Data Missing During Battery Replacement |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.a0 |
Description: | Data is missing during the replacement of the battery. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1998 | 1455 | 06/16/1998 | 2004 |
Subject: | SGP/EBBR/E26 - Data Missing During Battery Terminal Cleaning |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | Data is missing during the cleaning of the battery terminals. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/1998 | 1115 | 07/15/1998 | 1930 |
Subject: | SGP/EBBR/E20 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | On 3 July 1998 the cup anemometer lost a cup. Until the cup assembly was replaced by site ops personnel on 15 July 1998, wind speed and vector averaged wind speed data were incorrect. The values affected are listed below. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/1998 | 1445 | 07/15/1998 | 1500 |
Subject: | SGP/EBBR/E25 - Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | On 15 July 1998 the EBBR AEM was moved to a higher position. The complexity of the task required that the AEM be disabled for what amounted to two half hour average periods, during which the temperatures, relative humidities, vapor pressures, Bowen ratio, and latent and sensible heat fluxes were all incorrect. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/1998 | 1630 | 07/15/1998 | 1700 |
Subject: | SGP/EBBR/E25 - Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | On 15 July 1998 the EBBR CR10 program was reloaded with changed calibration coefficients for a new soil temperature probe #1. Therefore the 5, 15, and 30 minute data for 1700 GMT are incorrect. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/19/1998 | 2215 | 10/21/1998 | 1600 |
Subject: | SGP/EBBR/E20 - Incorrect Data - Cattle Vandalism |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Cattle penetrated the electric fence and pulled the aspirator housings from the AEM. Thus T/RH/VP and sensible and latent heat fluxes are incorrect for the period (until 1540 GMT; LE and H through the 30 minute period ending at 1600 GMT) |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/30/1998 | 0600 | 11/30/1998 | 1400 |
Subject: | SGP/EBBR/E25 - All Data Incorrect (zeros) |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
Description: | All data values are zero and incorrect; reason unknown. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
sgp5ebbrE25.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 1100 | 12/24/1998 | 1830 |
Subject: | SGP/EBBR/E25 - Wind Direction and Speed Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
Description: | The wind direction and speed sensors were iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws, wind_d, sigma_wd 15 minute: wind_s, mv_wind_d 30 minute: wind_s, res_ws, wind_d, sigma_wd |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
sgp5ebbrE25.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/1998 | 0615 | 11/10/1998 | 1430 |
Subject: | SGP/EBBR/E22 - Battery Voltage Low, Data Incorrect |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.00, sgp5ebbrE22.a0 |
Description: | Battery voltages less than 10.4 volts occurred much of the time. All data should be considered incorrect when the voltage is less than 10.4 volts. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.00:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 1435 | 12/23/1998 | 0200 |
Subject: | SGP/EBBR/E20 - Wind Direction Data Incorrect (revised) |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0105 | 01/09/1999 | 0030 |
Subject: | SGP/EBBR/E25 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 1005 | 01/08/1999 | 1730 |
Subject: | SGP/EBBR/E20 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1999 | 2355 | 01/08/1999 | 1100 |
Subject: | SGP/EBBR/E22 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1, sgp5ebbrE22.00, sgp5ebbrE22.a0 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
sgp5ebbrE22.00:
sgp5ebbrE22.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0835 | 01/08/1999 | 1600 |
Subject: | SGP/EBBR/E26 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0545 | 01/09/1999 | 2200 |
Subject: | SGP/EBBR/E20 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 0735 | 12/21/1998 | 2000 |
Subject: | SGP/EBBR/E20 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 0705 | 12/24/1998 | 1630 |
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/1999 | 0200 | 01/14/1999 | 1830 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | Battery voltages less than 10.4 volts occurred some of the time. All data should be considered incorrect when the voltage is less than 10.4 volts. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/02/1999 | 0735 | 01/02/1999 | 1700 |
Subject: | SGP/EBBR/E25 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 1145 | 01/09/1999 | 0300 |
Subject: | SGP/EBBR/E25 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/1998 | 0300 | 12/30/1998 | 1300 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | Battery voltage dropped below 10.4 volts. All data should be considered to be incorrect. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/1998 | 1735 | 12/29/1998 | 1630 |
Subject: | SGP/EBBR/E20 - Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.00, sgp5ebbrE20.a0 |
Description: | Version 6 of the CR10 program was installed during this period instead of version 7 (the initial version 7 program did not work). The calibrations and coefficients in version 6 were incorrect; therefore all data during this period is of questionable quality and e and h are clearly incorrect. The correct version 7 program was installed on 29 Dec 1998. |
Measurements: | sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/13/1999 | 2150 | 02/10/1999 | 1640 |
Subject: | SGP/EBBR/E20 - Pressure Low |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | The pressure sensor values dropped several kPa on 13 January 1999 because of a sensor malfunction and remained that way until the sensor was replaced on 10 February 1999. Comparison of the pressure before and after the problem period shows that Bowen ratio was underestimated by approximately 6% during the period, resulting in a 6% overestimation of latent heat flux and a 6% underestimation of sensible heat flux. Adjustment of the flux data during the period by these amounts should be made by the data user. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/1998 | 1700 | 03/10/1999 | 1600 |
Subject: | SGP/EBBR/E20 - Right Relative Humidity Offset Low |
DataStreams: | sgp15ebbrE20.a1 |
Description: | The right relative humidity has been offset low approximately 5% since the installation of the recalibrated EBBR system on 25 Nov. 1998. This only affects the absolute value of the relative humidities used in the flux calculations; the fluxes themselves are not affected because of the removal of offsets by the AEM switching. The right temperature/humidity probe was replaced on 10 March 1999. |
Measurements: | sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/10/1999 | 2045 | 03/10/1999 | 2100 |
Subject: | SGP/EBBR/E22 - Right Aspirator Fan Replaced |
DataStreams: | sgp15ebbrE22.a1, sgp30ebbrE22.a1 |
Description: | Replacement of the right aspirator fan on the EBBR AEM caused temperature, relative humidity, and vapor pressure data to be incorrect for the 2045 and 2100 GMT 15 minute data and Bowen ratio, sensible heat flux, and latent heat flux to be incorrect for the 2100 GMT data. |
Measurements: | sgp30ebbrE22.a1:
sgp15ebbrE22.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1999 | 1415 | 04/02/1999 | 1645 |
Subject: | SGP/EBBR/E26 - Calibration Changeout |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The data from this period was either missing or incorrect during the calibration changeout of the EBBR unit. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/1999 | 1545 | 03/25/1999 | 2355 |
Subject: | SGP/EBBR/E25 - CR10 Program Revision (Vs. 7) |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
Description: | The data from this period was either missing during and after the installation of the revised version 7 of the CR10 program. The new program version has made a colossal improvement in the flux data. Please refer back to DQR D980117.3 and PIF P971218.1, which describe the incorrect way in which calculations were being performed by the previous CR10 program version. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
sgp5ebbrE25.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/1999 | 0040 | 04/07/1999 | 1745 |
Subject: | SGP/EBBR/E20 - Air Temperature Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp30ebbrE20.a1, sgp5ebbrE20.a0 |
Description: | Right air temperature (15 minute) and top and bottom air temperatures (5 and 30 minute) during this period are incorrect because the right air temperature sensor was not working. |
Measurements: | sgp30ebbrE20.a1:
sgp5ebbrE20.a0:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/1999 | 1645 | 04/02/1999 | 1800 |
Subject: | SGP/EBBR/E26 - Incorrect Data |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0, sgpebbrE26.00 |
Description: | All data is incorrect for this time. This problem was related to changeout activities. |
Measurements: | sgpebbrE26.00:
sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/1999 | 1800 | 04/02/1999 | 1800 |
Subject: | SGP/EBBR - EBBR E26 Incorrect Data |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0, sgpebbrE26.00 |
Description: | All data is incorrect for this time. This problem was related to changeout activities. |
Measurements: | sgpebbrE26.00:
sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/1999 | 1830 | 04/15/1999 | 1900 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The battery voltage dropped suddenly to 8 volts at 1900 GMT, making all data incorrect for that time. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/1999 | 2245 | 04/29/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The battery voltage dropped to less than 10.4 volts, causing all data to be suspect for the time period. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/1999 | 0615 | 05/04/1999 | 2030 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Data To Be Missing |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The battery did not supply sufficient voltage to the CR10 for data to be stored. A new battery was installed on 4 May, but the wiring problem was not fixed. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/1999 | 2230 | 05/18/1999 | 1645 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Data To Be Missing |
DataStreams: | sgp15ebbrE26.a1, sgp30ebbrE26.a1, sgp5ebbrE26.00, sgp5ebbrE26.a0 |
Description: | The battery did not supply sufficient voltage to the CR10 for data to be stored. Although a new battery was installed on 4 May, the wiring problem was not found and fixed until 18 May. |
Measurements: | sgp15ebbrE26.a1:
sgp5ebbrE26.a0:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 1420 | 06/16/1999 | 1855 |
Subject: | SGP/EBBR/E25 - Data Missing During PM |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
Description: | All data was missing during some PM work. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
sgp5ebbrE25.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 1830 | 06/16/1999 | 1900 |
Subject: | SGP/EBBR/E25 - Data Incorrect During PM |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.00, sgp5ebbrE25.a0 |
Description: | All data was incorrect during some PM work. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
sgp5ebbrE25.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 1905 | 06/16/1999 | 2010 |
Subject: | SGP/EBBR/E25 - Data Incorrect During PM |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | Air and humidity probe temperatures and the reference temperature were incorrect during this period because of the PM work taking place. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/1999 | 2015 | 06/17/1999 | 0500 |
Subject: | SGP/EBBR/E25 - Data Incorrect During PM |
DataStreams: | sgp15ebbrE25.a1, sgp30ebbrE25.a1, sgp5ebbrE25.a0 |
Description: | Right and left air temperatures and top and bottom air temperatures were incorrect during this period because of the PM work taking place. Sensible and latent heat fluxes and Bowen ratio were therefore also incorrect. |
Measurements: | sgp15ebbrE25.a1:
sgp5ebbrE25.a0:
sgp30ebbrE25.a1:
|