DQR ID | Subject | Data Streams Affected |
---|---|---|
D000221.6 | SGP/EBBR - EBBR E9 Anemometer Frozen, Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D000301.8 | SGP/EBBR - EBBR E9 Net Radiation Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D010402.1 | SGP/EBBR/E9 - E9 EBBR Wind Direction Incorrect | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D010402.2 | SGP/EBBR/E9 - E9 EBBR Wind Speed Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D011127.25 | SGP EBBR E9 - E9 EBBR Data Incorect During 6 Month Checks | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D011221.2 | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.3 | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.4 | SGP EBBR E9 - E9 EBBR Wind Speed Frozen Stopped | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.5 | SGP EBBR E9 - E9 EBBR Wind Direction Frozen In One Direction | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.8 | SGP EBBR E9 - E9 EBBR Gradients Incorrect During Sensor Replacement | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D020110.2 | SGP EBBR E9 - E9 EBBR Right Air Temperature Incorrect | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D020628.14 | SGP/EBBR/E9 - T/RH Check | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D020716.10 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D020716.2 | SGP/EBBR/E9 - Annual calibration changeout | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D020717.3 | SGP/EBBR/E9 - Measurements All Zeros | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.00, sgp5ebbrE9.b1 |
D020717.4 | SGP/EBBR/E9 - Humidity Probe Measurements Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D020717.5 | SGP/EBBR/E9 - Right Humidity Suspect | sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D030110.32 | SGP/EBBR/E9 - Data Incorrect during 6 month checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030114.8 | SGP/EBBR/E9 - Net Rad data bad during dome replacement | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D030114.9 | SGP/EBBR/E9 - AEM Malfunction | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030712.1 | SGP/EBBR/E9 - AEM Hung Inbetween Home Positions | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030712.15 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030712.3 | SGP/EBBR/E9 - Battery Voltage Low | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030729.2 | SGP/EBBR/E9 - AEM Hung in home 30 position. | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D030919.7 | SGP/EBBR/E9 - Water in Net Radiometer; Surface Fluxes are Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031031.3 | SGP/EBBR/E9 - Measurements All Zero | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031204.8 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031222.13 | SGP/EBBR/E9 - Net Radiometer Iced Over During Storm | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031222.14 | SGP/EBBR/E9 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040304.8 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040304.9 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040723.2 | SGP/EBBR/E9 - net radiometer top dome broken, water in bottom dome | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D041222.10 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050113.2 | SGP/EBBR/E9 - Wind Speed Threshhold Low | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050206.8 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D050207.4 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D050215.14 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050215.15 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051104.1 | SGP/EBBR/E9 - Net Radiation Incorrect: Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051112.6 | SGP/EBBR/E9 - metadata corrections | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051215.2 | SGP/EBBR/E9 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D060621.7 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D080102.2 | SGP/EBBR/E9 - Net Radiation Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D090313.11 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D101127.1 | SGP/EBBR/E9 - T/RH Probe Temperature Problem - Sensible and Latent Heat Fluxes Affected | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D110105.4 | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D130410.1 | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D130410.2 | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940301.6 | SGP/EBBR/E9 - Invalid wind speed frozen sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940329.3 | SGP/E9/EBBR - AEM Malfunction | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940826.1 | SGP/EBBR/E9 - Malfunctioning Wind Dir Sensor, Incorrect SM2 Results | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940830.7 | SGP/EBBR/E9 - Hail Damage to Net Radiometer and Wind Speed Sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950308.2 | SGP/EBBR/E9 - Radiation Shield Problem | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950626.11 | SGP/EBBR/E9 - Stopped Ventilation Fan | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D950626.12 | SGP/EBBR/E9 - Water in Net Radiometer | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950626.6 | SGP/EBBR/E9 - Frozen Wind Speed Sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D951020.1 | SGP/EBBR/E9 - 3-month Check | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D951127.1 | SGP/EBBR/E9 - Annual calibration changeout | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D960321.1 | SGP/EBBR/E9 - Wind Speed Cups Frozen | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D960508.4 | SGP/EBBR/E9 - 3-month check | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D961122.10 | SGP/EBBR/E9 - Air Temperature Thermocouples Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D961122.22 | SGP/EBBR/E9 - EBBR 3 Month Checks - 10 EFs | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D971021.3 | SGP/EBBR/E9 - EBBR Biannual Checks | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D971027.8 | SGP/EBBR/E9 - Wind Direction Sensor Malfunction | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D980117.13 | SGP/EBBR/E9 - EBBR Frozen Wind Speed | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980117.25 | SGP/EBBR/E9 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D980117.31 | SGP/EBBR/E9 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980410.5 | SGP/EBBR/E9 - Wind Speed Sensor Frozen | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D980416.10 | SGP/EBBR/E9 - 3-Month Check | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980529.8 | SGP/EBBR/E9 - Six Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D990127.12 | SGP/EBBR/E9 - Wind Direction Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990127.8 | SGP/EBBR/E9 - EBBR E9 Net Radiometer Dome Broken, Flux Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990128.6 | SGP/EBBR/E9 - Wind Speed Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990128.7 | SGP/EBBR/E9 - Wind Speed Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990622.5 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990623.1 | SGP/EBBR/E9 - Right Aspirator Not Working | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1999 | 0800 | 12/18/1999 | 1930 |
Subject: | SGP/EBBR - EBBR E9 Anemometer Frozen, Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The anemometer cups were frozen stalled. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/1999 | 0230 | 09/30/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E9 Net Radiation Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0000 | 12/11/2000 | 1331 |
Subject: | SGP/EBBR/E9 - E9 EBBR Wind Direction Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The wind direction vane was frozen in one direction by icing during the indicated period. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2000 | 2015 | 12/15/2000 | 1631 |
Subject: | SGP/EBBR/E9 - E9 EBBR Wind Speed Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The wind speed sensor cups were frozen in place by icing. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/2001 | 1500 | 05/22/2001 | 1536 |
04/12/2001 | 1800 | 04/12/2001 | 1846 |
10/23/2001 | 1510 | 10/23/2001 | 1701 |
Subject: | SGP EBBR E9 - E9 EBBR Data Incorect During 6 Month Checks |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2001 | 0000 | 01/03/2001 | 1901 |
02/22/2001 | 2031 | 02/22/2001 | 2301 |
02/23/2001 | 0545 | 02/25/2001 | 1201 |
02/28/2001 | 2015 | 03/11/2001 | 0831 |
03/20/2001 | 0145 | 03/29/2001 | 1601 |
02/09/2001 | 0615 | 02/11/2001 | 1701 |
01/20/2001 | 0915 | 02/09/2001 | 0001 |
Subject: | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | A worn AEM belt caused the AEM to hang frequently. Gradient measurements, sensible heat flux, latent heat flux, and Bowen ratio are incorrect during the indicated periods. The AEM hung on 2/9/01 because of icing from an ice storm. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/08/2001 | 1315 | 04/09/2001 | 0931 |
04/23/2001 | 1915 | 04/24/2001 | 0031 |
04/10/2001 | 1545 | 04/10/2001 | 1831 |
04/12/2001 | 1745 | 04/12/2001 | 1901 |
04/24/2001 | 1245 | 04/25/2001 | 0131 |
04/25/2001 | 1215 | 04/26/2001 | 0501 |
04/29/2001 | 0000 | 04/29/2001 | 0201 |
04/29/2001 | 0745 | 04/29/2001 | 0801 |
04/29/2001 | 1000 | 05/08/2001 | 1501 |
04/03/2001 | 1945 | 04/03/2001 | 2331 |
Subject: | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The AEM belt was worn and the AEM hung frequently. Gradients, sensible heat flux, latent heat flux, and Bowen ratio were incorrect during the indicated period. The AEM was replaced during the recalibration changeout on 5/11/01. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/28/2001 | 0530 | 01/29/2001 | 2031 |
02/09/2001 | 0430 | 02/11/2001 | 1531 |
02/14/2001 | 1735 | 02/16/2001 | 1831 |
Subject: | SGP EBBR E9 - E9 EBBR Wind Speed Frozen Stopped |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stop. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/28/2001 | 0800 | 01/29/2001 | 1701 |
02/14/2001 | 1735 | 02/16/2001 | 1831 |
02/09/2001 | 0430 | 02/10/2001 | 1801 |
Subject: | SGP EBBR E9 - E9 EBBR Wind Direction Frozen In One Direction |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | An ice storm froze the wind direction sensor in one postion. Th indicated measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/19/2001 | 1500 | 07/19/2001 | 1631 |
Subject: | SGP EBBR E9 - E9 EBBR Gradients Incorrect During Sensor Replacement |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | During the replacement of the right air temperature probe, all gradient measurements were incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/2001 | 0830 | 07/15/2001 | 2216 |
07/16/2001 | 0530 | 07/16/2001 | 1946 |
07/14/2001 | 0230 | 07/14/2001 | 2016 |
07/17/2001 | 1300 | 07/17/2001 | 1316 |
07/18/2001 | 1230 | 07/18/2001 | 1431 |
07/19/2001 | 0715 | 07/19/2001 | 1616 |
Subject: | SGP EBBR E9 - E9 EBBR Right Air Temperature Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The right air temperature probe measurements were incorrect during these periods. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/1994 | 1820 | 11/14/1994 | 2000 |
Subject: | SGP/EBBR/E9 - T/RH Check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
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: 1820, 1825, 1830, 1835, 1840, 1845, 1850, 1855, 1900, 1905, 1910, 1915, 1920, 1925, 1930, 1935, 1940, 1945 15 minute: 1830, 1845, 1900, 1915, 1930, 1945 30 minute: 1830, 1900, 1930, 2000 (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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2002 | 1600 | 05/09/2002 | 1631 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 2100 | 11/16/1995 | 1700 |
Subject: | SGP/EBBR/E9 - Annual calibration changeout |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | On November 15, 1995 the changeout for annual calibration occurred at E9, Ashton, KS. After installation of the new SEBS unit, RH output was zero. The next day site operations personnel found that the RH probe cable connections were loose. RH returned to normal after the connections were tightened at 1700 GMT on 16 November 1995. During the period of time that the connections were not made, the following data values are incorrect: 5 minute: hum_top, hum_bot, vp_top, vp_bot 15 minute: mv_hum_r, mv_hum_l 30 minute: hum_top, hum_bot, vp_top, vp_bot. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2002 | 1600 | 03/28/2002 | 1601 |
06/04/2002 | 1500 | 06/04/2002 | 1501 |
Subject: | SGP/EBBR/E9 - Measurements All Zeros |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.00, sgp5ebbrE9.b1 |
Description: | The measurements were all zeros at the indicated times. This occurs after a CR10 program restart, which sometimes happens after some servicing of the EBBR is performed. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2002 | 1615 | 03/28/2002 | 1801 |
Subject: | SGP/EBBR/E9 - Humidity Probe Measurements Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The temperature and humidity measurements from both T/RH probes were incorrect during changeout of the right probe. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1015 | 07/16/2002 | 1630 |
Subject: | SGP/EBBR/E9 - Right Humidity Suspect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The Right Humidity measurement was normally incorrect, although it is often difficult to determine it by looking at the measurement. The measurements float around, sometimes being too large and sometimes being too small, through most of the day, particularly for the hour before sunset through the hour after sunrise. Great care and comparison with surrounding EBBR sites would be needed to be able to use any of the latent and sensible heat flux measurements from E9 for this period. Another DQPR has been issued to fix this problem, which has eluded repair efforts so far. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/19/2002 | 1635 | 11/19/2002 | 1735 |
Subject: | SGP/EBBR/E9 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/2002 | 1600 | 09/24/2002 | 1630 |
Subject: | SGP/EBBR/E9 - Net Rad data bad during dome replacement |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The net radiation measurement was incorrect during replacement of the top dome. Measurements calculated using net radiation are also incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/16/2002 | 1330 | 11/16/2002 | 1430 |
11/17/2002 | 0700 | 11/19/2002 | 1730 |
Subject: | SGP/EBBR/E9 - AEM Malfunction |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | When the AEM (Automatic Exchange Mechanism) is hung inbetween a home position, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/2003 | 2000 | 03/13/2003 | 1745 |
Subject: | SGP/EBBR/E9 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/2003 | 1800 | 04/24/2003 | 1830 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2003 | 1100 | 05/30/2003 | 1700 |
Subject: | SGP/EBBR/E9 - Battery Voltage Low |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many of the measurements are incorrect much of the time during this period, when the battery voltage was 10.9 volts or less. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/2003 | 1230 | 08/12/2003 | 1615 |
Subject: | SGP/EBBR/E9 - AEM Hung in home 30 position. |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The AEM was hung in the home 30 position. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/2003 | 0600 | 08/04/2003 | 1800 |
Subject: | SGP/EBBR/E9 - Water in Net Radiometer; Surface Fluxes are Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The net radiometer top dome was punctured by migrating birds. This alone does not cause incorrect net radiation measurements. However, when it subsequently rains, water collects in the bottom dome, causing the net radiation measurements to be too large during the day and too small at night. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/23/2003 | 1600 | 09/23/2003 | 1600 |
Subject: | SGP/EBBR/E9 - Measurements All Zero |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Data values were all zero after restarting the CR10 datalogger. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2003 | 1730 | 11/04/2003 | 1800 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2003 | 0100 | 12/14/2003 | 1930 |
Subject: | SGP/EBBR/E9 - Net Radiometer Iced Over During Storm |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The net radiometer was covered with ice from a storm. Net radiation values are incorrect, and are sometimes even negative during the daytime. Sensible and latent heat fluxes are therefore incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 2020 | 12/10/2003 | 0645 |
Subject: | SGP/EBBR/E9 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind speed sensor was frozen stopped by ice from a storm. The wind speed and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2004 | 1745 | 01/27/2004 | 1800 |
01/27/2004 | 1935 | 01/28/2004 | 0140 |
01/28/2004 | 0330 | 01/28/2004 | 0355 |
01/31/2004 | 1800 | 02/12/2004 | 1640 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The bearings in the sensor appear to be worn, contributing to the problem. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0000 | 02/03/2004 | 1740 |
02/05/2004 | 1120 | 02/05/2004 | 1405 |
02/09/2004 | 0945 | 02/09/2004 | 1430 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/28/2004 | 1200 | 06/29/2004 | 1530 |
Subject: | SGP/EBBR/E9 - net radiometer top dome broken, water in bottom dome |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The Net radiometer top dome was broken. Site Ops did not indicate that there was water in the bottom dome, but the data suggests it. Net radiation values during the period are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2004 | 1630 | 10/05/2004 | 1700 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2004 | 0830 | 01/31/2005 | 1400 |
Subject: | SGP/EBBR/E9 - Wind Speed Threshhold Low |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | When the wind speed is very low, the anemometer cups stop turning. Wind speeds above the threshhold may be underestimated. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1505 | 01/05/2005 | 0800 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1755 | 01/05/2005 | 0800 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2005 | 2300 | 01/11/2005 | 1645 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/08/2005 | 0530 | 02/09/2005 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2005 | 0900 | 11/01/2005 | 1630 |
Subject: | SGP/EBBR/E9 - Net Radiation Incorrect: Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Water had entered the top of the net radiometer during the rain on 10/31 early morning. The net radiation, and thus sensible and latent heat fluxes were incorreect during the stated period. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 04/19/2005 | 2359 |
Subject: | SGP/EBBR/E9 - metadata corrections |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On 20050420, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E9 data collected by ARM back to the installation of the instrument in December 1992. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2005 | 0700 | 11/01/2005 | 1615 |
Subject: | SGP/EBBR/E9 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The top dome of the net radiometer was broken, resulting in net radiations that were too small, and thus sensible and latent heat fluxes that were too small. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2006 | 2230 | 05/02/2006 | 1550 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind speed measurement was incorrect after the cup anemometer lost a cup. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/22/2007 | 1500 | 01/08/2008 | 1800 |
Subject: | SGP/EBBR/E9 - Net Radiation Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | There was water in the net radiometer. The net radiation data was incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 0350 | 01/28/2009 | 1910 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2010 | 1630 | 10/06/2010 | 2130 |
Subject: | SGP/EBBR/E9 - T/RH Probe Temperature Problem - Sensible and Latent Heat Fluxes Affected |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | During mid-day the left T/RH probe temperature was offscale, sometimes resulting in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2010 | 0800 | 12/07/2010 | 1600 |
Subject: | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The right Air Temperature probe leads were loose. During nighttime the right Air Temperature went offscale, resulting in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/2012 | 1340 | 11/19/2012 | 2000 |
Subject: | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Net Radiation was incorrect, thus latent and sensible heat fluxes were incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2013 | 1900 | 02/27/2013 | 2000 |
Subject: | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Battery voltage was low, leading to many incorrect measurements, including sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/1994 | 0400 | 02/24/1994 | 1300 |
Subject: | SGP/EBBR/E9 - Invalid wind speed frozen sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On February 23, 1994 the EBBR wind speed sensor at E9, Ashton, KS was frozen to a stationary condition by ice. It broke free in strong winds on February 24, 1994. Invalid data for the time period indicated is: 30 minute: wind_s, res_ws 15 minute: wind_s 5 minute: wind_s, res_ws. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/1993 | 1501 | 03/22/1994 | 1643 |
Subject: | SGP/E9/EBBR - AEM Malfunction |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | EDITOR'S NOTE: This DQR refers, in part, to data collected prior to the begin date of regular ARM data. During the first month covered by this DQR, the EBBR.E9 data were not archived with standard ARM names. The data are therefore not readily available, but can be made available by special request. The total period covered by the problem documented here is 930615.0000-940322.1643. The AEM at E9 frequently did not function properly during the time period stated. Please see the notes in the EBBR platform describing home signal conditions for which certain of the data fields are suspect. The newly installed AEM is performing properly so far. The files could be flagged, but it is up to the user to read the platform notes concerning the condition of the home signal and then view the quality of the data accordingly. I would be at my terminal full- time in attempting to list all days and times and data fields that are affected by the numerous AEM malfunctions. Furthermore, I have done so previously in several PIFs that I will reference here for information: P931101.4, P931115.2, P940105.2, P940211.3 |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/19/1994 | 0100 | 08/23/1994 | 1530 |
Subject: | SGP/EBBR/E9 - Malfunctioning Wind Dir Sensor, Incorrect SM2 Results |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | It has been reported previously that a malfunction of the wind direction sensor resulting in zero or 135 degree outputs can cause the soil moisture #2 sensor to read offscale. The two sensors are attached to a multiplexer pair. The manufacturer of the multiplexer and data acquisition system have not been able to explain how our instrument configuration can cause this effect. Shortly after 0030 GMT on August 20, 1994 significant rainfall occurred, being reflected in more than a doubling of soil moisture within an hour. During the time period listed above, the wind direction sensor mulfunctioned (apparently caused by water in the wind direction sensor electronics), causing the following data fields to be incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_dir 30 minute: res_ws, wind_d, sigma_wd. During part of the listed period, Soil Moisture #2 was also incorrect, being offscale; during those times the following 30 minute data is also incorrect: 30 minute: sm2, c_shf2, ave_shf, cs2, ces2, g2, h, e. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/1994 | 0130 | 08/23/1994 | 1600 |
Subject: | SGP/EBBR/E9 - Hail Damage to Net Radiometer and Wind Speed Sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Golf ball size hail was reported for the Ashton site for early August 20, 1994. It damaged the wind speed sensor and the net radiometer shortly before 0130 GMT. The following data fields are to be flagged as incorrect for the periods listed above (resultant wind speed has already been indicated as incorrect in a previous DQR that documented the malfunction of the wind direction sensor): 5 minute: wind_s, res_ws, q 15 minute: wind_s, mv_q 30 minute: wind_s, res_ws, q, h, e. Note that h and e are also incorrect as a consequence of q being incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/1995 | 0030 | 02/21/1995 | 1600 |
Subject: | SGP/EBBR/E9 - Radiation Shield Problem |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The left radiation shield was off during the period of time above. Close inspection of the 15 minute data was required to detect when the shield fell off. As is often the case in such a situation, the 30 minute data does not adequately indicate such a failure. A radiation shield has fallen off of an EBBR before, apparently a result of vibration of the AEM during exchanges. All air and humidity probe temperatures (except the reference temperature), relative humidities, vapor pressures, Bowen ratio, sensible heat flux, and latent heat flux during this period are considered to be incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/1995 | 0130 | 04/18/1995 | 1620 |
Subject: | SGP/EBBR/E9 - Stopped Ventilation Fan |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | On April 18, 1995, a site operator discovered the right aspirator ventilation fan of the EBBR to be stopped. Inspection of the data indicates that this condition began early in the GMT day. Interpretation of the start time of the condition is made more difficult by a slight bias low in absolute temperature in comparison to the left temperature probe. 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 period above 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/1995 | 1130 | 04/18/1995 | 1530 |
Subject: | SGP/EBBR/E9 - Water in Net Radiometer |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The top dome of the net radiometer was broken and a small amount of water had collected in the bottom dome of the net radiometer. It is not obvious that it had been there for more than several hours before the site operators arrived for a preventative maintenance visit. There are noticable effects on the data for the period listed above. The domes were replaced. The following data is incorrect for the period above: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1995 | 0245 | 03/08/1995 | 1640 |
Subject: | SGP/EBBR/E9 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Ashton, KS (E9). 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
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.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 1230 | 11/15/1995 | 2100 |
Subject: | SGP/EBBR/E9 - Annual calibration changeout |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On November 15, 1995 the changeout for annual calibration occurred at E9, Ashton, KS. SEBS unit 4 was removed and unit 6 was installed. Between 1230 and 2100 GMT no data was collected; data during this period is missing. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/1996 | 0450 | 01/23/1996 | 1555 |
Subject: | SGP/EBBR/E9 - Wind Speed Cups Frozen |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Freezing rain, snow, and below freezing conditions during 23 January 1996 caused the wind speed sensor cups to freeze in a stopped state at E9, Ashton, KS. Site operations personnel removed the ice from the cups later in the day to allow them to turn 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/1996 | 1731 | 04/30/1996 | 1800 |
Subject: | SGP/EBBR/E9 - 3-month check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/1996 | 1430 | 09/20/1996 | 1500 |
Subject: | SGP/EBBR/E9 - Air Temperature Thermocouples Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Both air temperature thermocouples were offscale, for unknown reasons, for 1500 GMT for both 15 and 30 minute air temperature values. The malfunction of the air temperature thermocouples 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, tair_l 30 minute: tair_top, tair_bot, bowen, e, and h |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1996 | 1557 | 11/15/1996 | 1630 |
Subject: | SGP/EBBR/E9 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/1997 | 1845 | 04/15/1997 | 1915 |
Subject: | SGP/EBBR/E9 - EBBR Biannual Checks |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/10/1997 | 0000 | 09/30/1997 | 1550 |
Subject: | SGP/EBBR/E9 - Wind Direction Sensor Malfunction |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | During numerous intermittent times during the period listed, the wind direction sensor at E9, Ashton, KS malfunctioned, putting out a value of 135. The sensor was replaced on 30 September 1997, at 1550 GMT. All wind direction data with values of 135 during the period listed should be considered incorrect. The affected data are: 5 minute: res_ws, wind_d, sigma_d 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_d |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1997 | 0715 | 12/21/1997 | 1115 |
01/04/1998 | 0745 | 01/05/1998 | 1710 |
01/09/1998 | 0945 | 01/09/1998 | 1610 |
Subject: | SGP/EBBR/E9 - EBBR Frozen Wind Speed |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Wind speed cups were frozen during the indicated time periods. All 5, 15, and 30 minute data values indicated are incorrect for the periods listed. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 1845 | 01/08/1998 | 1715 |
Subject: | SGP/EBBR/E9 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/24/1997 | 1630 | 01/08/1998 | 1800 |
Subject: | SGP/EBBR/E9 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/1998 | 0500 | 01/15/1998 | 0030 |
Subject: | SGP/EBBR/E9 - Wind Speed Sensor Frozen |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind speed sensor was frozen stalled during this period. Data values that were affected are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/16/1997 | 1928 | 10/16/1997 | 2002 |
Subject: | SGP/EBBR/E9 - 3-Month Check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/1998 | 1740 | 05/14/1998 | 1759 |
Subject: | SGP/EBBR/E9 - Six Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/1998 | 2100 | 11/25/1998 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind direction sensor stopped working correctly, resulting in the following values being affected: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/1998 | 1230 | 11/12/1998 | 2000 |
Subject: | SGP/EBBR/E9 - EBBR E9 Net Radiometer Dome Broken, Flux Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | Incorrect Net Radiation values resulted in incorrect sensible and latent heat fluxes. Affected values are: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1515 | 01/03/1999 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
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: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0605 | 01/08/1999 | 1900 |
Subject: | SGP/EBBR/E9 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
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: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/1999 | 0750 | 04/29/1999 | 1850 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind speed sensor lost two of the three cups. Flux data is not affected. The data values affected are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/1999 | 1230 | 06/11/1999 | 1645 |
Subject: | SGP/EBBR/E9 - Right Aspirator Not Working |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The result of the right aspirator not working was a reduction in measured temperature gradient and thus a reduction in estimated sensible heat flux and an increase in latent heat flux. The fluxes could be in error by as much as 10%. Reported right air and humidity probe temperatures, top and bottom air and humidity probe temperatures, right relative humidity, and top and bottom vapor pressure are affected. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|