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 |
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:
sgp15ebbrE20.b1:
sgp30ebbrE20.b1:
|
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 |
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:
sgp15ebbrE20.b1:
sgp30ebbrE20.b1:
|
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:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|