DQRs for Session: 138754 User:venturvCompleted: 11-16-2011

Data Quality Reports for Session: 138754 User: venturv Completed: 11/16/2011

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D100816.1	SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes - a result of low battery voltage.	sgp5ebbrE20.b1, sgp15ebbrE20.b1, sgp30ebbrE20.b1
D101004.2	SGP/EBBR/E13 - Net Radiation Too Large	sgp5ebbrE13.b1, sgp15ebbrE13.b1, sgp30ebbrE13.b1
D110724.1	SGP/RAIN/C1 - Incorrect precipitation measurements	sgprainC1.b1

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:	sgp5ebbrE20.b1, sgp15ebbrE20.b1, sgp30ebbrE20.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 home_signal soil_heat_flow_5_mv 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

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:	sgp5ebbrE13.b1, sgp15ebbrE13.b1, sgp30ebbrE13.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)

Start Date	End Date	End Time
04/24/2010	04/24/2010	2359
04/26/2010	04/26/2010	2359
04/30/2010	04/30/2010	2359
05/03/2010	05/06/2010	2359
05/09/2010	05/10/2010	2359
05/12/2010	05/17/2010	2359
05/19/2010	05/25/2010	2359
05/29/2010	05/29/2010	2359
05/31/2010	05/31/2010	2359
06/04/2010	06/04/2010	2359
06/07/2010	06/07/2010	2359
06/09/2010	06/10/2010	2359
06/14/2010	06/16/2010	2359
06/20/2010	06/20/2010	2359
07/02/2010	07/07/2010	2359
07/10/2010	07/10/2010	2359
07/16/2010	07/16/2010	2359
07/24/2010	07/27/2010	2359
08/02/2010	08/02/2010	2359
08/15/2010	08/31/2010	2359
09/01/2010	09/09/2010	2359

Subject:	SGP/RAIN/C1 - Incorrect precipitation measurements
DataStreams:	sgprainC1.b1
Description:	RAIN TBRG precipitation measurements were significantly lower than accumulated precipitation measured by co-located ORG and MET instruments. This occurred in both light and heavy rain events. The tipping bucket sensor was replaced by a weighing bucket rain gauge.
Measurements:	sgprainC1.b1: Rainfall rate(rain_rate) Precipitation(precip_tbrg)

END OF DATA