DQRs for Session: 119467 User:dmfoperCompleted: 05-07-2009

Data Quality Reports for Session: 119467 User: dmfoper Completed: 05/07/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D031211.3	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D041222.18	SGP/EBBR/E26 - 6 Month Checks	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D041222.4	SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D041222.5	SGP/EBBR/E26 - Most Measurements Incorrect	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D050206.16	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D050207.12	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D050211.1	SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D051112.9	SGP/EBBR/E26 - metadata corrections	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D051222.1	SGP/EBBR/E26 - Data Suspect During Low Supply Voltage	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
D060501.26	SGP/EBBR/E26 - Measurements Incorrect	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1

DQRID : D031211.3

Start Date	Start Time	End Date	End Time
10/13/2003	0000	09/29/2004	1845

Subject:	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated.
Measurements:	sgp15ebbrE26.b1: atmos_pressure_mv sgp5ebbrE26.b1: Barometric Pressure(atmos_pressure) sgp30ebbrE26.b1: sensible_heat_flux Barometric Pressure(atmos_pressure) latent_heat_flux bowen_ratio

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DQRID : D041222.18

Start Date	Start Time	End Date	End Time
09/30/2004	1530	09/30/2004	1600

Subject:	SGP/EBBR/E26 - 6 Month Checks
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp15ebbrE26.b1: rh_right_mv temp_air_right temp_air_left temp_trh_right_rr rh_left_mv temp_trh_left_rr sgp5ebbrE26.b1: temp_air_bottom temp_trh_bottom vapor_pressure_bottom rh_bottom_fraction temp_air_top rh_top_fraction vapor_pressure_top temp_trh_top sgp30ebbrE26.b1: vapor_pressure_bottom temp_air_top vapor_pressure_top latent_heat_flux rh_bottom_fraction bowen_ratio rh_top_fraction temp_air_bottom temp_trh_top sensible_heat_flux temp_trh_bottom

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DQRID : D041222.4

Start Date	Start Time	End Date	End Time
10/27/2004	1930	11/05/2004	0100
11/10/2004	0600	11/24/2004	1500

Subject:	SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	During low battery voltage conditions (< 10.5 V especially) many measurements are incorrect.
Measurements:	sgp15ebbrE26.b1: soil_temp_2_rr temp_air_right soil_heat_flow_5_mv wspd_arith_mean soil_temp_1_rr soil_temp_4_rr soil_moisture_4_rr soil_temp_3_rr soil_moisture_2_rr wdir_vec_mean_mv soil_moisture_1_rr soil_temp_5_rr temp_air_left soil_moisture_3_rr rh_right_mv soil_heat_flow_3_mv soil_heat_flow_4_mv soil_moisture_5_rr atmos_pressure_mv rh_left_mv soil_heat_flow_1_mv temp_trh_left_rr net_radiation_mv temp_reference_rr soil_heat_flow_2_mv home_signal temp_trh_right_rr sgp5ebbrE26.b1: temp_air_bottom temp_trh_bottom temp_trh_top Barometric Pressure(atmos_pressure) home_signal wdir_vec_mean wdir_vec_std wspd_arith_mean vapor_pressure_top temp_reference rh_top_fraction net_radiation vapor_pressure_bottom rh_bottom_fraction temp_air_top wspd_vec_mean sgp30ebbrE26.b1: soil_temp_4 latent_heat_flux corr_soil_heat_flow_3 bowen_ratio wdir_vec_std soil_moisture_4 soil_heat_capacity_3 temp_air_bottom wdir_vec_mean soil_moisture_1 sensible_heat_flux soil_heat_flow_1 surface_soil_heat_flux_5 vapor_pressure_top energy_storage_change_5 soil_heat_capacity_4 corr_soil_heat_flow_5 rh_bottom_fraction soil_heat_flow_3 soil_heat_flow_4 surface_soil_heat_flux_4 rh_top_fraction corr_soil_heat_flow_2 soil_heat_flow_2 surface_soil_heat_flux_1 surface_soil_heat_flux_3 soil_heat_capacity_5 soil_temp_5 corr_soil_heat_flow_4 surface_soil_heat_flux_avg soil_moisture_2 soil_temp_2 soil_temp_3 soil_heat_capacity_2 home_signal_15 soil_heat_capacity_1 soil_moisture_3 vapor_pressure_bottom corr_soil_heat_flow_1 net_radiation wspd_arith_mean surface_soil_heat_flux_2 Barometric Pressure(atmos_pressure) energy_storage_change_1 temp_reference energy_storage_change_2 energy_storage_change_3 soil_heat_flow_5 temp_trh_top temp_trh_bottom temp_air_top wspd_vec_mean energy_storage_change_4 soil_temp_1 soil_moisture_5 home_signal_30

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DQRID : D041222.5

Start Date	Start Time	End Date	End Time
10/29/2004	1100	10/29/2004	1600

Subject:	SGP/EBBR/E26 - Most Measurements Incorrect
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	Most of the measurements became either too large or too small. The cause is not known.
Measurements:	sgp15ebbrE26.b1: soil_temp_2_rr temp_air_right soil_heat_flow_5_mv wspd_arith_mean soil_temp_1_rr soil_temp_4_rr soil_moisture_4_rr soil_temp_3_rr soil_moisture_2_rr wdir_vec_mean_mv soil_moisture_1_rr soil_temp_5_rr temp_air_left soil_moisture_3_rr rh_right_mv soil_heat_flow_3_mv soil_heat_flow_4_mv soil_moisture_5_rr atmos_pressure_mv rh_left_mv soil_heat_flow_1_mv temp_trh_left_rr net_radiation_mv temp_reference_rr soil_heat_flow_2_mv home_signal temp_trh_right_rr sgp5ebbrE26.b1: temp_air_bottom temp_trh_bottom temp_trh_top Barometric Pressure(atmos_pressure) home_signal wdir_vec_mean wdir_vec_std wspd_arith_mean vapor_pressure_top temp_reference rh_top_fraction net_radiation vapor_pressure_bottom rh_bottom_fraction temp_air_top wspd_vec_mean sgp30ebbrE26.b1: soil_temp_4 latent_heat_flux corr_soil_heat_flow_3 bowen_ratio wdir_vec_std soil_moisture_4 soil_heat_capacity_3 temp_air_bottom wdir_vec_mean soil_moisture_1 sensible_heat_flux soil_heat_flow_1 surface_soil_heat_flux_5 vapor_pressure_top energy_storage_change_5 soil_heat_capacity_4 corr_soil_heat_flow_5 rh_bottom_fraction soil_heat_flow_3 soil_heat_flow_4 surface_soil_heat_flux_4 rh_top_fraction corr_soil_heat_flow_2 soil_heat_flow_2 surface_soil_heat_flux_1 surface_soil_heat_flux_3 soil_heat_capacity_5 soil_temp_5 corr_soil_heat_flow_4 surface_soil_heat_flux_avg soil_moisture_2 soil_temp_2 soil_temp_3 soil_heat_capacity_2 home_signal_15 soil_heat_capacity_1 soil_moisture_3 vapor_pressure_bottom corr_soil_heat_flow_1 net_radiation wspd_arith_mean surface_soil_heat_flux_2 Barometric Pressure(atmos_pressure) energy_storage_change_1 temp_reference energy_storage_change_2 energy_storage_change_3 soil_heat_flow_5 temp_trh_top temp_trh_bottom temp_air_top wspd_vec_mean energy_storage_change_4 soil_temp_1 soil_moisture_5 home_signal_30

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DQRID : D050206.16

Start Date	Start Time	End Date	End Time
01/05/2005	0745	01/07/2005	1530

Subject:	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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:	sgp15ebbrE26.b1: wspd_arith_mean sgp5ebbrE26.b1: wspd_arith_mean wspd_vec_mean sgp30ebbrE26.b1: wspd_arith_mean wspd_vec_mean

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DQRID : D050207.12

Start Date	Start Time	End Date	End Time
01/05/2005	1020	01/06/2005	1730

Subject:	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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:	sgp15ebbrE26.b1: wdir_vec_mean_mv sgp5ebbrE26.b1: wdir_vec_std wdir_vec_mean wspd_vec_mean sgp30ebbrE26.b1: wdir_vec_std wspd_vec_mean wdir_vec_mean

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DQRID : D050211.1

Start Date	Start Time	End Date	End Time
10/10/2004	1400	02/17/2005	1630

Subject:	SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	The E26 EBBR pressure sensor experienced the poor internal voltage regulation problem experienced at other sites last year. Aging of the internal voltage regulator caused the pressure output to drop by 1-2 kPa (0.1-0.5 kPa is normal) when the Sun rose and the solar panel goosed the battery voltage up. The sensible and latent heat fluxes were not significantly affected.
Measurements:	sgp15ebbrE26.b1: atmos_pressure_mv sgp5ebbrE26.b1: Barometric Pressure(atmos_pressure) sgp30ebbrE26.b1: Barometric Pressure(atmos_pressure)

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DQRID : D051112.9

Start Date	Start Time	End Date	End Time
10/13/2003	0000	07/22/2005	2359

Subject:	SGP/EBBR/E26 - metadata corrections
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the instrument in June 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:	sgp15ebbrE26.b1: base time(base_time) sgp5ebbrE26.b1: base time(base_time) sgp30ebbrE26.b1: base time(base_time)

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DQRID : D051222.1

Start Date	Start Time	End Date	End Time
12/20/2005	0800	12/22/2005	1500

Subject:	SGP/EBBR/E26 - Data Suspect During Low Supply Voltage
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	Low battery supply voltage resulted in high home signals and questionable data at times. Data for battery voltage <10.5 volts should be considered to be incorrect.
Measurements:	sgp15ebbrE26.b1: soil_temp_2_rr temp_air_right soil_heat_flow_5_mv wspd_arith_mean base time(base_time) soil_temp_1_rr soil_temp_4_rr soil_moisture_4_rr soil_temp_3_rr soil_moisture_2_rr wdir_vec_mean_mv soil_moisture_1_rr Dummy altitude for Zeb(alt) lat(lat) soil_temp_5_rr temp_air_left Time offset of tweaks from base_time(time_offset) soil_moisture_3_rr rh_right_mv soil_heat_flow_3_mv soil_heat_flow_4_mv lon(lon) soil_moisture_5_rr atmos_pressure_mv rh_left_mv soil_heat_flow_1_mv temp_trh_left_rr battery_voltage net_radiation_mv temp_reference_rr soil_heat_flow_2_mv home_signal temp_trh_right_rr sgp5ebbrE26.b1: temp_air_bottom temp_trh_bottom Dummy altitude for Zeb(alt) base time(base_time) time(time) temp_trh_top Barometric Pressure(atmos_pressure) lon(lon) home_signal wdir_vec_mean wdir_vec_std wspd_arith_mean vapor_pressure_top temp_reference rh_top_fraction Time offset of tweaks from base_time(time_offset) net_radiation vapor_pressure_bottom lat(lat) rh_bottom_fraction temp_air_top wspd_vec_mean sgp30ebbrE26.b1: soil_temp_4 latent_heat_flux Dummy altitude for Zeb(alt) corr_soil_heat_flow_3 bowen_ratio wdir_vec_std soil_moisture_4 soil_heat_capacity_3 temp_air_bottom wdir_vec_mean soil_moisture_1 sensible_heat_flux soil_heat_flow_1 base time(base_time) surface_soil_heat_flux_5 vapor_pressure_top energy_storage_change_5 corr_soil_heat_flow_5 soil_heat_capacity_4 rh_bottom_fraction soil_heat_flow_3 soil_heat_flow_4 lat(lat) surface_soil_heat_flux_4 rh_top_fraction corr_soil_heat_flow_2 soil_heat_flow_2 surface_soil_heat_flux_1 surface_soil_heat_flux_3 soil_heat_capacity_5 soil_temp_5 corr_soil_heat_flow_4 lon(lon) surface_soil_heat_flux_avg soil_temp_2 soil_moisture_2 soil_temp_3 soil_heat_capacity_2 home_signal_15 soil_heat_capacity_1 soil_moisture_3 vapor_pressure_bottom corr_soil_heat_flow_1 net_radiation Time offset of tweaks from base_time(time_offset) surface_soil_heat_flux_2 wspd_arith_mean energy_storage_change_1 Barometric Pressure(atmos_pressure) temp_reference energy_storage_change_2 energy_storage_change_3 soil_heat_flow_5 temp_trh_top temp_trh_bottom temp_air_top energy_storage_change_4 wspd_vec_mean soil_temp_1 soil_moisture_5 home_signal_30

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DQRID : D060501.26

Start Date	Start Time	End Date	End Time
02/21/2006	0400	02/25/2006	1700

Subject:	SGP/EBBR/E26 - Measurements Incorrect
DataStreams:	sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1
Description:	Most measurements were incorrect during low battery voltage conditions.
Measurements:	sgp15ebbrE26.b1: soil_temp_2_rr temp_air_right soil_heat_flow_5_mv wspd_arith_mean base time(base_time) soil_temp_1_rr soil_temp_4_rr soil_moisture_4_rr soil_temp_3_rr soil_moisture_2_rr wdir_vec_mean_mv soil_moisture_1_rr Dummy altitude for Zeb(alt) lat(lat) soil_temp_5_rr temp_air_left Time offset of tweaks from base_time(time_offset) soil_moisture_3_rr rh_right_mv soil_heat_flow_3_mv soil_heat_flow_4_mv lon(lon) soil_moisture_5_rr atmos_pressure_mv rh_left_mv soil_heat_flow_1_mv temp_trh_left_rr battery_voltage net_radiation_mv temp_reference_rr soil_heat_flow_2_mv home_signal temp_trh_right_rr sgp5ebbrE26.b1: temp_air_bottom temp_trh_bottom Dummy altitude for Zeb(alt) base time(base_time) time(time) temp_trh_top Barometric Pressure(atmos_pressure) lon(lon) home_signal wdir_vec_mean wdir_vec_std wspd_arith_mean vapor_pressure_top temp_reference rh_top_fraction Time offset of tweaks from base_time(time_offset) net_radiation vapor_pressure_bottom lat(lat) rh_bottom_fraction temp_air_top wspd_vec_mean sgp30ebbrE26.b1: soil_temp_4 latent_heat_flux Dummy altitude for Zeb(alt) corr_soil_heat_flow_3 bowen_ratio wdir_vec_std soil_moisture_4 soil_heat_capacity_3 temp_air_bottom wdir_vec_mean soil_moisture_1 sensible_heat_flux soil_heat_flow_1 base time(base_time) surface_soil_heat_flux_5 vapor_pressure_top energy_storage_change_5 corr_soil_heat_flow_5 soil_heat_capacity_4 rh_bottom_fraction soil_heat_flow_3 soil_heat_flow_4 lat(lat) surface_soil_heat_flux_4 rh_top_fraction corr_soil_heat_flow_2 soil_heat_flow_2 surface_soil_heat_flux_1 surface_soil_heat_flux_3 soil_heat_capacity_5 soil_temp_5 corr_soil_heat_flow_4 lon(lon) surface_soil_heat_flux_avg soil_temp_2 soil_moisture_2 soil_temp_3 soil_heat_capacity_2 home_signal_15 soil_heat_capacity_1 soil_moisture_3 vapor_pressure_bottom corr_soil_heat_flow_1 net_radiation Time offset of tweaks from base_time(time_offset) surface_soil_heat_flux_2 wspd_arith_mean energy_storage_change_1 Barometric Pressure(atmos_pressure) temp_reference energy_storage_change_2 energy_storage_change_3 soil_heat_flow_5 temp_trh_top temp_trh_bottom temp_air_top energy_storage_change_4 wspd_vec_mean soil_temp_1 soil_moisture_5 home_signal_30

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