DQRs for Session: 179431 User:lloydl1Completed: 09-06-2016

Data Quality Reports for Session: 179431 User: lloydl1 Completed: 09/06/2016

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D011127.34	SGP EBBR E26 - Data Incorrect During 6 Month Checks	sgp30ebbrE26.b1	Incorrect
D011206.2	SGP EBBR E26 - Battery Voltage Low	sgp30ebbrE26.b1	Suspect
D020716.18	SGP/EBBR/E26 - 6 Month Checks	sgp30ebbrE26.b1	Incorrect
D020717.37	SGP/EBBR/E26 - Measurements Zero	sgp30ebbrE26.b1	Incorrect
D020717.38	SGP/EBBR/E26 - Measurements Incorrect	sgp30ebbrE26.b1	Incorrect
D020717.39	SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature	sgp30ebbrE26.b1	Suspect
D021113.1	SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header	sgp30ebbrE26.b1	Does not affect quality
D021113.4	SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header	sgp30ebbrE26.b1	Does not affect quality
D030110.27	SGP/EBBR/E26 - Data Incorrect during 6 month checks	sgp30ebbrE26.b1	Incorrect
D030117.26	SGP/EBBR/E26 - Measurements zero following logger restart	sgp30ebbrE26.b1	Incorrect
D030117.27	SGP/EBBR/E26 - Multiplexer Problem	sgp30ebbrE26.b1	Incorrect
D030117.28	SGP/EBBR/E26 - Water in broken Net Radiometer Dome	sgp30ebbrE26.b1	Incorrect
D030117.29	SGP/EBBR/E26 - Battery Voltage Low	sgp30ebbrE26.b1	Incorrect
D030128.2	SGP/EBBR/E26 - AEM Hung	sgp30ebbrE26.b1	Incorrect
D030128.3	SGP/EBBR/E26 - Data zeros following logger restart	sgp30ebbrE26.b1	Incorrect
D030128.4	SGP/EBBR/E26 - Left Air Temperature Incorrect	sgp30ebbrE26.b1	Incorrect
D030514.8	SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect	sgp30ebbrE26.b1	Incorrect
D030711.6	SGP/EBBR/E26 -Right Air Temperature Incorrect	sgp30ebbrE26.b1	Incorrect
D030712.23	SGP/EBBR/E26 - 6 Month Checks	sgp30ebbrE26.b1	Incorrect
D030728.4	SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive	sgp30ebbrE26.b1	Incorrect
D030919.11	SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect	sgp30ebbrE26.b1	Incorrect
D031103.1	SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect	sgp30ebbrE26.b1	Incorrect
D031204.21	SGP/EBBR/E26 - 6 Month Checks	sgp30ebbrE26.b1	Incorrect
D031211.3	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect	sgp30ebbrE26.b1	Incorrect
D031222.24	SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm	sgp30ebbrE26.b1	Incorrect
D031222.25	SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm	sgp30ebbrE26.b1	Incorrect
D040304.28	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice	sgp30ebbrE26.b1	Incorrect
D040304.29	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice	sgp30ebbrE26.b1	Incorrect
D040813.5	SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect	sgp30ebbrE26.b1	Incorrect
D041222.1	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect	sgp30ebbrE26.b1	Incorrect
D041222.18	SGP/EBBR/E26 - 6 Month Checks	sgp30ebbrE26.b1	Incorrect
D041222.4	SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect	sgp30ebbrE26.b1	Suspect
D041222.5	SGP/EBBR/E26 - Most Measurements Incorrect	sgp30ebbrE26.b1	Incorrect
D050206.16	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm	sgp30ebbrE26.b1	Incorrect
D050207.12	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm	sgp30ebbrE26.b1	Incorrect
D050211.1	SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage	sgp30ebbrE26.b1	Suspect
D050324.3	SGP/EBBR/E26 - Incorrect soil type coefficients used	sgp30ebbrE26.b1	Incorrect
D050719.15	SGP/EBBR/E26 - Improved EBBR CR10 Program	sgp30ebbrE26.b1	Does not affect quality
D051106.30	SGP/EBBR/E26 - Average Soil Heat Flux Incorrect	sgp30ebbrE26.b1	Incorrect
D051112.9	SGP/EBBR/E26 - metadata corrections	sgp30ebbrE26.b1	Does not affect quality
D051222.1	SGP/EBBR/E26 - Data Suspect During Low Supply Voltage	sgp30ebbrE26.b1	Suspect
D060501.26	SGP/EBBR/E26 - Measurements Incorrect	sgp30ebbrE26.b1	Incorrect
D071001.1	SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor	sgp30ebbrE26.b1	Suspect
D090313.8	SGP/EBBR/E26 - Wind Speed Incorrect	sgp30ebbrE26.b1	Incorrect
D091015.2	SGP/EBBR/E26 - Low supply voltage	sgp30ebbrE26.b1	Incorrect

DQRID : D011127.34

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/05/2001	1415	04/05/2001	1546	Incorrect
10/16/2001	1750	10/16/2001	1921	Incorrect

Subject:	SGP EBBR E26 - Data Incorrect During 6 Month Checks
DataStreams:	sgp30ebbrE26.b1
Description:	The data was incorrect during the 6 month checks.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D011206.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/01/2001	0000	08/23/2001	1530	Suspect

Subject:	SGP EBBR E26 - Battery Voltage Low
DataStreams:	sgp30ebbrE26.b1
Description:	The battery voltage often dropped below 10.5 volts. All data for voltages below 10.5 volts should be considered to be incorrect. See the 15 minute data files, which contain the battery voltage, to determine when the data was incorrect.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D020716.18

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/02/2002	1500	05/02/2002	1531	Incorrect

Subject:	SGP/EBBR/E26 - 6 Month Checks
DataStreams:	sgp30ebbrE26.b1
Description:	The indicated measurements were incorrect during the 6 month checks.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D020717.37

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/30/2002	1500	05/30/2002	1501	Incorrect

Subject:	SGP/EBBR/E26 - Measurements Zero
DataStreams:	sgp30ebbrE26.b1
Description:	The measurements are often zero after a CR10 datalogger restart, as occurred here.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D020717.38

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/30/2002	1530	05/30/2002	1531	Incorrect

Subject:	SGP/EBBR/E26 - Measurements Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	Change of energy storage (CES) measurements (calculated from the change of soil temperature with time) are sometimes incorrect after a CR10 program restart because the beginning measurement of the averaging period is zero. Average soil heat flow, sensible heat flux, and latent heat flux were affected and cannot be recalculated.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 Latent heat flux(latent_heat_flux) energy_storage_change_4 surface_soil_heat_flux_2 surface_soil_heat_flux_1 energy_storage_change_5 Sensible heat flux(sensible_heat_flux) surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4

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DQRID : D020717.39

Start Date	Start Time	End Date	End Time	Data Quality Metric
06/01/2002	2115	06/30/2002	2356	Suspect

Subject:	SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature
DataStreams:	sgp30ebbrE26.b1
Description:	Multiplexer 2 is failing during times of control box temperatures above 29 degrees C. The failure begins in the last channel and progresses to lower channels as the temperature increases. It has not yet been determined whether the failure is in the relays or a solid state component of the multiplexer. This condition is probably due to the aging of the device and the millions of cycles that this 10 year old device has made. More failures of this sort may occur in the future. A cure is being sought aside from replacement of the multiplexers to prevent the problem. The indicated measurements need to be inspected to determine which ones are usable.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom Average soil heat flow at the surface(surface_soil_heat_flux_avg) bowen_ratio Latent heat flux(latent_heat_flux) temp_air_top soil_heat_flow_3 soil_heat_flow_5 soil_heat_flow_4 Sensible heat flux(sensible_heat_flux) vapor_pressure_top vapor_pressure_bottom surface_soil_heat_flux_5 corr_soil_heat_flow_4 corr_soil_heat_flow_3 surface_soil_heat_flux_3 surface_soil_heat_flux_4 corr_soil_heat_flow_5

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DQRID : D021113.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/01/2001	0000	06/18/2003	2359	Does not affect quality

Subject:	SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header
DataStreams:	sgp30ebbrE26.b1
Description:	The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality.
Measurements:	sgp30ebbrE26.b1: soil_heat_capacity_2 soil_heat_capacity_3 soil_heat_capacity_1 soil_heat_capacity_5 soil_heat_capacity_4

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DQRID : D021113.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/01/1993	1200	06/18/2003	1159	Does not affect quality

Subject:	SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header
DataStreams:	sgp30ebbrE26.b1
Description:	The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (NOTE: The actual begin date of some of these data streams is as early as 7/4/93. This DQR applies to all 30m EBBR data.)
Measurements:	sgp30ebbrE26.b1: soil_heat_capacity_2 soil_heat_capacity_3 soil_heat_capacity_1 soil_heat_capacity_5 soil_heat_capacity_4

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DQRID : D030110.27

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/27/2002	1605	11/27/2002	1635	Incorrect

Subject:	SGP/EBBR/E26 - Data Incorrect during 6 month checks
DataStreams:	sgp30ebbrE26.b1
Description:	Some of the measurements are incorrect during the 6 month checks.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D030117.26

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/11/2002	1600	07/11/2002	1629	Incorrect

Subject:	SGP/EBBR/E26 - Measurements zero following logger restart
DataStreams:	sgp30ebbrE26.b1
Description:	Most of the measurements were zero, which normally happens after a datalogger restart.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D030117.27

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/01/2002	0000	07/11/2002	1300	Incorrect

Subject:	SGP/EBBR/E26 - Multiplexer Problem
DataStreams:	sgp30ebbrE26.b1
Description:	One of the multiplexers exhibited dropouts of the channels, beginning with the last channel at temperatures above about 30 C and moving backward through the channels as the temperature rose. High temperatures affected the switching speed of the multiplexer. This is the first time that this behavior has been documented in a Campbell Scientific multiplexer. The multiplexer had been in continuous field use for 10 years and had experienced probably more switching cycles than what is normally expected of the device in that period. The multiplexer was replaced to solve the problem.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom Average soil heat flow at the surface(surface_soil_heat_flux_avg) Latent heat flux(latent_heat_flux) temp_air_top surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux) surface_soil_heat_flux_5 corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 surface_soil_heat_flux_3 surface_soil_heat_flux_4 corr_soil_heat_flow_1 corr_soil_heat_flow_5

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DQRID : D030117.28

Start Date	Start Time	End Date	End Time	Data Quality Metric
08/27/2002	0830	09/05/2002	1700	Incorrect

Subject:	SGP/EBBR/E26 - Water in broken Net Radiometer Dome
DataStreams:	sgp30ebbrE26.b1
Description:	The net radiation measurement is incorrect. Measurements calculated using net radiation are also incorrect. No work-around is possible for this situation.
Measurements:	sgp30ebbrE26.b1: Latent heat flux(latent_heat_flux) Net radiation(net_radiation) Sensible heat flux(sensible_heat_flux)

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DQRID : D030117.29

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/01/2002	0845	11/06/2002	0130	Incorrect

Subject:	SGP/EBBR/E26 - Battery Voltage Low
DataStreams:	sgp30ebbrE26.b1
Description:	When Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. The user will need to inspect the data carefully to determine the useability of the data.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D030128.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/04/2002	1015	01/10/2003	1600	Incorrect

Subject:	SGP/EBBR/E26 - AEM Hung
DataStreams:	sgp30ebbrE26.b1
Description:	The AEM hung inbetween home positions during the period. The Bowen ratio, gradient measurements, sensible heat flux, and latent heat flux are incorrect.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D030128.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/10/2003	1900	01/10/2003	1904	Incorrect

Subject:	SGP/EBBR/E26 - Data zeros following logger restart
DataStreams:	sgp30ebbrE26.b1
Description:	Most measurements were zero after restart of the CR10 datalogger, after a calibration changeout of the EBBR unit.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 home_signal_30 Wind speed, lower, 1-min avg(wspd_arith_mean) Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D030128.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/14/2003	1725	01/23/2003	1715	Incorrect

Subject:	SGP/EBBR/E26 - Left Air Temperature Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	The left air temperature was incorrect during the period. Poor electronic connections may have caused this.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom vapor_pressure_bottom bowen_ratio Latent heat flux(latent_heat_flux) temp_air_top vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D030514.8

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/19/2003	1900	05/16/2003	1500	Incorrect

Subject:	SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	Soil Heat Flow #1 was incorrect much of the time. The sensor was replaced.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Latent heat flux(latent_heat_flux) surface_soil_heat_flux_1 soil_heat_flow_1 corr_soil_heat_flow_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D030711.6

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/24/2003	1635	03/06/2003	1520	Incorrect

Subject:	SGP/EBBR/E26 -Right Air Temperature Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	One of the Right Air Temperature connections was loose, producing incorrect data.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom bowen_ratio Latent heat flux(latent_heat_flux) temp_air_top Sensible heat flux(sensible_heat_flux)

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DQRID : D030712.23

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/17/2003	1445	04/17/2003	1535	Incorrect

Subject:	SGP/EBBR/E26 - 6 Month Checks
DataStreams:	sgp30ebbrE26.b1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D030728.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
06/12/2003	0230	06/12/2003	0300	Incorrect
06/13/2003	1200	06/13/2003	1230	Incorrect

Subject:	SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive
DataStreams:	sgp30ebbrE26.b1
Description:	Soil Heat Flow #5 was large positive for these two periods, for an unknown reason.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Latent heat flux(latent_heat_flux) surface_soil_heat_flux_5 soil_heat_flow_5 corr_soil_heat_flow_5 Sensible heat flux(sensible_heat_flux)

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DQRID : D030919.11

Start Date	Start Time	End Date	End Time	Data Quality Metric
08/21/2003	1600	08/21/2003	1600	Incorrect

Subject:	SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	The half hour after restart of the CR10 datalogger, the soil temperatures for the beginning of the period are missing. Therefore the soil energy storage and surface flux values are also incorrect.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 Latent heat flux(latent_heat_flux) energy_storage_change_4 surface_soil_heat_flux_2 surface_soil_heat_flux_1 energy_storage_change_5 Sensible heat flux(sensible_heat_flux) surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4

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DQRID : D031103.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/30/2003	1545	11/13/2003	1545	Incorrect

Subject:	SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	During a preventative maintenance visit to perform the 6-month calibrations, the home15 and home30 outputs began reading the same as one another. A fuse replacement and lubrication of the AEM sprockets on 11/13 corrected the problem. During the interval specified, the home15, home30, and sensible and latent heat fluxes are incorrect.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction home_signal_30 rh_bottom_fraction Latent heat flux(latent_heat_flux) home_signal_15 temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D031204.21

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/30/2003	1535	10/30/2003	1615	Incorrect

Subject:	SGP/EBBR/E26 - 6 Month Checks
DataStreams:	sgp30ebbrE26.b1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D031211.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/13/2003	0000	09/29/2004	1845	Incorrect

Subject:	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: bowen_ratio Latent heat flux(latent_heat_flux) Atmospheric pressure(atmos_pressure) Sensible heat flux(sensible_heat_flux)

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DQRID : D031222.24

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/12/2003	1935	12/14/2003	1615	Incorrect

Subject:	SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind speed, lower, 1-min avg(wspd_arith_mean) Wind speed vector mean(wspd_vec_mean)

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DQRID : D031222.25

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/12/2003	2140	12/14/2003	1530	Incorrect

Subject:	SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind direction vector mean(wdir_vec_mean) wdir_vec_std Wind speed vector mean(wspd_vec_mean)

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DQRID : D040304.28

Start Date	Start Time	End Date	End Time	Data Quality Metric
02/02/2004	0200	02/02/2004	1620	Incorrect

Subject:	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind speed, lower, 1-min avg(wspd_arith_mean) Wind speed vector mean(wspd_vec_mean)

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DQRID : D040304.29

Start Date	Start Time	End Date	End Time	Data Quality Metric
02/02/2004	0410	02/02/2004	1530	Incorrect

Subject:	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind direction vector mean(wdir_vec_mean) wdir_vec_std Wind speed vector mean(wspd_vec_mean)

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DQRID : D040813.5

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/30/2004	1600	08/05/2004	1530	Incorrect

Subject:	SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	The soil temperature and soil heat flow probes for set #4 was pulled partially out of the ground. This caused soil temperature #4 to be too high and soil heat flow #4 to be too low. The error is not so great as to cause a large error in the sensible and latent heat fluxes.
Measurements:	sgp30ebbrE26.b1: Latent heat flux(latent_heat_flux) energy_storage_change_4 corr_soil_heat_flow_4 Soil temperature mean 4(soil_temp_4) surface_soil_heat_flux_4 soil_heat_capacity_4 Sensible heat flux(sensible_heat_flux) soil_heat_flow_4

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DQRID : D041222.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/21/2003	1530	10/12/2003	2355	Incorrect

Subject:	SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: bowen_ratio Latent heat flux(latent_heat_flux) Atmospheric pressure(atmos_pressure) Sensible heat flux(sensible_heat_flux)

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DQRID : D041222.18

Start Date	Start Time	End Date	End Time	Data Quality Metric
09/30/2004	1530	09/30/2004	1600	Incorrect

Subject:	SGP/EBBR/E26 - 6 Month Checks
DataStreams:	sgp30ebbrE26.b1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp30ebbrE26.b1: temp_air_bottom temp_trh_top vapor_pressure_bottom bowen_ratio rh_top_fraction rh_bottom_fraction Latent heat flux(latent_heat_flux) temp_air_top temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D041222.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/10/2004	0600	11/24/2004	1500	Suspect
10/27/2004	1930	11/05/2004	0100	Suspect

Subject:	SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	During low battery voltage conditions (< 10.5 V especially) many measurements are incorrect.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 Soil temperature mean 3(soil_temp_3) soil_heat_flow_2 soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 vapor_pressure_top soil_heat_flow_4 vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 temp_air_top energy_storage_change_4 energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D041222.5

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/29/2004	1100	10/29/2004	1600	Incorrect

Subject:	SGP/EBBR/E26 - Most Measurements Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	Most of the measurements became either too large or too small. The cause is not known.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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DQRID : D050206.16

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/05/2005	0745	01/07/2005	1530	Incorrect

Subject:	SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind speed, lower, 1-min avg(wspd_arith_mean) Wind speed vector mean(wspd_vec_mean)

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DQRID : D050207.12

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/05/2005	1020	01/06/2005	1730	Incorrect

Subject:	SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Wind direction vector mean(wdir_vec_mean) wdir_vec_std Wind speed vector mean(wspd_vec_mean)

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DQRID : D050211.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/10/2004	1400	02/17/2005	1630	Suspect

Subject:	SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Atmospheric pressure(atmos_pressure)

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DQRID : D050324.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/10/2003	1700	03/03/2005	1600	Incorrect

Subject:	SGP/EBBR/E26 - Incorrect soil type coefficients used
DataStreams:	sgp30ebbrE26.b1
Description:	The soil type coefficents for soil moisture were incorrect from the day of the system installation on, making soil moisture values too large. As a result, soil heat flows were overmeasured, and sensible and latent heat fluxes were underestimated.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 energy_storage_change_5 surface_soil_heat_flux_5 soil_moisture_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 soil_moisture_1 soil_heat_capacity_5 soil_moisture_2 soil_heat_capacity_4 soil_moisture_3 soil_moisture_4 soil_heat_capacity_2 soil_heat_capacity_3 soil_heat_capacity_1 Latent heat flux(latent_heat_flux) surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux) corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 corr_soil_heat_flow_5

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DQRID : D050719.15

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/01/2001	0000	03/31/2005	1700	Does not affect quality

Subject:	SGP/EBBR/E26 - Improved EBBR CR10 Program
DataStreams:	sgp30ebbrE26.b1
Description:	Effective 20050331.1700, the EBBR.E26 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050331, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE26.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE26.a1). ~
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Latent heat flux(latent_heat_flux) Sensible heat flux(sensible_heat_flux)

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DQRID : D051106.30

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/03/2005	1800	03/31/2005	1700	Incorrect

Subject:	SGP/EBBR/E26 - Average Soil Heat Flux Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting in both sensible and latent heat fluxes being approximately 20 watts per meter squared too large during the middle of the day.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Latent heat flux(latent_heat_flux) Sensible heat flux(sensible_heat_flux)

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DQRID : D051112.9

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/13/2003	0000	07/22/2005	2359	Does not affect quality

Subject:	SGP/EBBR/E26 - metadata corrections
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: base_time

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DQRID : D051222.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/20/2005	0800	12/22/2005	1500	Suspect

Subject:	SGP/EBBR/E26 - Data Suspect During Low Supply Voltage
DataStreams:	sgp30ebbrE26.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:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 North latitude(lat) Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 Soil temperature mean 3(soil_temp_3) soil_heat_flow_2 soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 vapor_pressure_top soil_heat_flow_4 vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 time_offset temp_air_top energy_storage_change_4 energy_storage_change_5 temp_trh_bottom Altitude above mean sea level(alt) soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 base_time East longitude(lon) Sensible heat flux(sensible_heat_flux)

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DQRID : D060501.26

Start Date	Start Time	End Date	End Time	Data Quality Metric
02/21/2006	0400	02/25/2006	1700	Incorrect

Subject:	SGP/EBBR/E26 - Measurements Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	Most measurements were incorrect during low battery voltage conditions.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 North latitude(lat) Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 Soil temperature mean 3(soil_temp_3) soil_heat_flow_2 soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 vapor_pressure_top soil_heat_flow_4 vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 time_offset temp_air_top energy_storage_change_4 energy_storage_change_5 temp_trh_bottom Altitude above mean sea level(alt) soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 base_time East longitude(lon) Sensible heat flux(sensible_heat_flux)

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DQRID : D071001.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
09/28/2007	0140	10/11/2007	1730	Suspect

Subject:	SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor
DataStreams:	sgp30ebbrE26.b1
Description:	The left Thum (temperature of the humidity sensor chamber) measurement was incorrect at times, affecting several measurements, including the sensible and latent heat fluxes.
Measurements:	sgp30ebbrE26.b1: temp_trh_top vapor_pressure_bottom bowen_ratio Latent heat flux(latent_heat_flux) temp_trh_bottom vapor_pressure_top Sensible heat flux(sensible_heat_flux)

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DQRID : D090313.8

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/26/2009	1805	01/28/2009	1955	Incorrect

Subject:	SGP/EBBR/E26 - Wind Speed Incorrect
DataStreams:	sgp30ebbrE26.b1
Description:	The wind speed sensor was frozen stopped by freezing rain.
Measurements:	sgp30ebbrE26.b1: Wind speed, lower, 1-min avg(wspd_arith_mean) Wind speed vector mean(wspd_vec_mean)

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DQRID : D091015.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
10/14/2009	0230	10/17/2009	1530	Incorrect

Subject:	SGP/EBBR/E26 - Low supply voltage
DataStreams:	sgp30ebbrE26.b1
Description:	Low supply voltage during much of the period resulted in missing or incorrect data most of the time.
Measurements:	sgp30ebbrE26.b1: Average soil heat flow at the surface(surface_soil_heat_flux_avg) Net radiation(net_radiation) Wind speed vector mean(wspd_vec_mean) soil_heat_capacity_5 soil_heat_capacity_4 soil_heat_capacity_2 soil_heat_capacity_3 bowen_ratio rh_top_fraction soil_heat_capacity_1 Wind speed, lower, 1-min avg(wspd_arith_mean) home_signal_30 Latent heat flux(latent_heat_flux) Soil temperature mean 5(soil_temp_5) Soil temperature mean 4(soil_temp_4) soil_heat_flow_3 soil_heat_flow_2 Soil temperature mean 3(soil_temp_3) soil_heat_flow_1 Soil temperature mean 2(soil_temp_2) Soil temperature mean 1(soil_temp_1) soil_heat_flow_5 soil_heat_flow_4 vapor_pressure_top vapor_pressure_bottom corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 temp_reference corr_soil_heat_flow_5 temp_air_bottom Wind direction vector mean(wdir_vec_mean) wdir_vec_std energy_storage_change_1 energy_storage_change_2 energy_storage_change_3 energy_storage_change_4 temp_air_top energy_storage_change_5 temp_trh_bottom soil_moisture_5 surface_soil_heat_flux_5 surface_soil_heat_flux_3 surface_soil_heat_flux_4 Atmospheric pressure(atmos_pressure) soil_moisture_1 soil_moisture_2 soil_moisture_3 soil_moisture_4 temp_trh_top rh_bottom_fraction home_signal_15 surface_soil_heat_flux_2 surface_soil_heat_flux_1 Sensible heat flux(sensible_heat_flux)

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