DQR ID | Subject | Data Streams Affected |
---|---|---|
D000531.2 | SGP/EBBR/E13 - Data Missing Due to Power Failure | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
D000531.3 | SGP/EBBR/E13 - Data missing or corrupted | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
D000531.4 | SGP/EBBR/E13 - failure of sensors | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
D000531.5 | SGP/EBBR/E13 - Failed Right Humidity Probe | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
D000628.1 | SGP/EBBR/E13- Left humidity probe replaced | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 0800 | 07/17/1995 | 2200 |
Subject: | SGP/EBBR/E13 - Data Missing Due to Power Failure |
DataStreams: | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Description: | A power failure following a lightning strike to the central cluster area resulted in the EBBR data being missing for this period of time. |
Measurements: | sgp5ebbrE13.a0:
sgp5ebbrE13.00:
sgp15ebbrE13.a1:
sgp30ebbrE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/1995 | 1300 | 07/24/1995 | 2300 |
Subject: | SGP/EBBR/E13 - Data missing or corrupted |
DataStreams: | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Description: | Data are missing or corrupted during this period due to a broken wire on the solar panel that lowered the voltage to the system and maintenance that took place from 1530 to about 2215 GMT. |
Measurements: | sgp5ebbrE13.a0:
sgp5ebbrE13.00:
sgp15ebbrE13.a1:
sgp30ebbrE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 07/24/1995 | 2300 |
Subject: | SGP/EBBR/E13 - failure of sensors |
DataStreams: | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Description: | A lightning strike to the central cluster area shortly after 0800 GMT on July 17 caused failure of several EBBR sensors: both humidity probes, the barometer, soil heat flux #3, soil moisture # 1 and the wind direction. These failed sensors caused sensible, latent, and average soil heat flux to be incorrect until site operations performed maintenance on July 24th. Site Operations found a loose connection from soil moisture probe #1, removed barometer SN 6578 and replaced it with SN 6507, removed soil heat flux sensor #3 with SN 923022 and replaced it with SN 933199, repositioned the wind direction sensor - which was rotated approximately ninety degrees clockwise from its proper position, and removed the right humidity probe SN 460412 and replaced it with SN 460428. |
Measurements: | sgp5ebbrE13.a0:
sgp5ebbrE13.00:
sgp15ebbrE13.a1:
sgp30ebbrE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 09/22/1995 | 2108 |
Subject: | SGP/EBBR/E13 - Failed Right Humidity Probe |
DataStreams: | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Description: | A lightning strike to the central cluster area on 17 July 1995 caused failure of several EBBR sensors including the right humidity probe. On July 24th, site operations removed the right humidity probe SN 460412 and replaced it with SN 460428 In less than a day the right humidity probe output soared to over 113% and has hovered around 112% since. I consider all right probe values to be incorrect due to this behavior. Without a properly functioning right humidity probe, all values of top and bottom relative humidity, top and bottom vapor pressure, Bowen ratio, and latent and sensible heat fluxes are incorrect. A working spare relative humidity probe was not available at that time. The probe was replaced with a working, calibrated probe on 22 September 1995 at about 2108 GMT. I have the examined the data since the day of the replacement and find that the new probe is working well. All E13 EBBR measurements are presently correct. The old probe S/N was 460428, the new S/N is 460413. |
Measurements: | sgp5ebbrE13.a0:
sgp5ebbrE13.00:
sgp15ebbrE13.a1:
sgp30ebbrE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 07/25/1995 | 1930 |
Subject: | SGP/EBBR/E13- Left humidity probe replaced |
DataStreams: | sgp15ebbrE13.a1, sgp30ebbrE13.a1, sgp5ebbrE13.00, sgp5ebbrE13.a0 |
Description: | A lightning strike to the central cluster area on 17 July 1995 caused the left humidity probe to fail. Some of the period of incorrect data has been discussed in D0000531.4. The left humidity probe was replaced on 25 July 1995 at 1925 GMT (old SN 460413, new SN 460435). |
Measurements: | sgp5ebbrE13.a0:
sgp5ebbrE13.00:
sgp15ebbrE13.a1:
sgp30ebbrE13.a1:
|