DQRs for Session: 152225 User:zheng124Completed: 08-12-2013

Data Quality Reports for Session: 152225 User: zheng124 Completed: 08/12/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D100803.1	SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes	sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1
D100816.1	SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes - a result of low battery voltage.	sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1
D101004.2	SGP/EBBR/E13 - Net Radiation Too Large	sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1

DQRID : D100803.1

Start Date	Start Time	End Date	End Time
07/08/2010	0730	07/29/2010	1100

Subject:	SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes
DataStreams:	sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1
Description:	Because of a periodic AEM failure, home signal 30 was often stuck at the home signal 15 position. These occurrences resulted in incorrect latent and sensible heat flux values at times. Some missing data occurred because of low battery voltage (the CR10 program stops running when battery voltage is insufficient. The data outage events were preceded and followed by several hours of bad/suspicious data.
Measurements:	sgp5ebbrE20.b1: temp_trh_bottom rh_top_fraction temp_air_top temp_trh_top temp_air_bottom rh_bottom_fraction vapor_pressure_bottom vapor_pressure_top sgp15ebbrE20.b1: soil_temp_2_rr atmos_pressure_mv home_signal Wind speed, lower, 1-min avg(wspd_arith_mean) wdir_vec_mean_mv soil_temp_3_rr soil_moisture_3_r soil_moisture_2_r lat soil_moisture_1_r temp_trh_right_rr soil_heat_flow_3_mv soil_moisture_5_r net_radiation_mv soil_moisture_1_rr alt rh_left_mv soil_moisture_4_r soil_heat_flow_4_mv soil_moisture_4_rr soil_heat_flow_5_mv soil_temp_4_rr soil_heat_flow_2_mv base_time battery_voltage lon time temp_air_left rh_right_mv soil_moisture_3_rr soil_heat_flow_1_mv temp_air_right temp_trh_left_rr soil_moisture_2_rr temp_reference_rr soil_temp_1_rr soil_temp_5_rr soil_moisture_5_rr time_offset sgp30ebbrE20.b1: temp_air_top temp_air_bottom temp_trh_top bowen_ratio Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux) Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux) vapor_pressure_bottom vapor_pressure_top temp_trh_bottom

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DQRID : D100816.1

Start Date	Start Time	End Date	End Time
07/09/2010	1030	08/04/2010	0200

Subject:	SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes - a result of low battery voltage.
DataStreams:	sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1
Description:	Supply voltage sometimes dropped too low at night, causing incorrect measurements of sensible and latent heat fluxes, pressure, AEM home signal, and soil heat flow.
Measurements:	sgp5ebbrE20.b1: Barometric Pressure(atmos_pressure) sgp15ebbrE20.b1: atmos_pressure_mv soil_heat_flow_3_mv soil_heat_flow_4_mv soil_heat_flow_5_mv home_signal soil_heat_flow_2_mv soil_heat_flow_1_mv sgp30ebbrE20.b1: surface_soil_heat_flux_5 surface_soil_heat_flux_2 surface_soil_heat_flux_1 surface_soil_heat_flux_4 surface_soil_heat_flux_3 Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux) Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux) corr_soil_heat_flow_5 corr_soil_heat_flow_4 corr_soil_heat_flow_3 corr_soil_heat_flow_2 corr_soil_heat_flow_1 home_signal_30 home_signal_15 Barometric Pressure(atmos_pressure) soil_heat_flow_1 soil_heat_flow_3 soil_heat_flow_2 soil_heat_flow_5 soil_heat_flow_4 Average soil heat flow at the surface(surface_soil_heat_flux_avg) bowen_ratio

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DQRID : D101004.2

Start Date	Start Time	End Date	End Time
07/21/2010	1330	10/01/2010	2000

Subject:	SGP/EBBR/E13 - Net Radiation Too Large
DataStreams:	sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1
Description:	The EBBR Net Radiation (Rn) values maintained a ~200 Wm^-2 reading because of poor cable lead connections. Sensible and latent heat fluxes were therefore overestimated. Sensible (H) and latent heat (LE) fluxes can be estimated in the following way: H (new) = H/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation] LE (new) = LE/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation]
Measurements:	sgp15ebbrE13.b1: net_radiation_mv sgp5ebbrE13.b1: Radiation, net(net_radiation) sgp30ebbrE13.b1: Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux) Radiation, net(net_radiation) Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

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