| DQR ID | Subject | Data Streams Affected |
|---|
| D020615.2 | SGP/SMOS/E15 - Reprocess: Wind speed calibrations | sgp1smosE15.a0, sgp30smosE15.a1 |
| D020620.23 | SGP/SMOS/E15 - Tower lowered for work on instrumentation | sgp1smosE15.a0, sgp30smosE15.a1 |
| D040318.14 | SGP/SMOS/E15 - 6-month Calibration Checks | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D941024.3 | SGP/SMOS/E15 - Tower lowered for work on instrumentation | sgp1smosE15.a0, sgp30smosE15.a1 |
| D950808.1 | SGP/SMOS/E15 - RH sensor failed | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D951101.6 | SGP/SMOS/E15 - Incorrect data | sgp1smosE15.a0, sgp30smosE15.a1 |
| D960507.1 | SGP/SMOS/E15 - Bad Data | sgp1smosE15.a0, sgp30smosE15.a1 |
| D960507.2 | SGP/SMOS/E15 - Bad data | sgp1smosE15.a0, sgp30smosE15.a1 |
| D960507.3 | SGP/SMOS/E15 - Bad data | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D960523.15 | SGP/SMOS/E15 - T/RH probe cable damaged | sgp1smosE15.a0, sgp30smosE15.a1 |
| D960523.16 | SGP/SMOS/E15 - Down to recheck Wind Monitor and replace T/RH probe | sgp1smosE15.a0, sgp30smosE15.a1 |
| D960911.3 | SGP/SMOS/E15 - Questionable or incorrect RH data | sgp1440smosE13.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D980401.4 | SGP/SMOS/E15 - Incorrect humidity data from E15 SMOS | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1 |
| D980401.5 | SGP/SMOS/E15 - RH probe failure and replacement at E15 | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1 |
| D980521.1 | SGP/SMOS/E15 - SMOS temperature anomaly on 11 MAY 1998 | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01 |
| D980616.1 | SGP/SMOS/E15 - Incorrect SMOS temperatures at E15 | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01 |
| D980629.1 | SGP/SMOS/E15 - Incorrect data during E15 SMOS repair | sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1 |
| Subject: | SGP/SMOS/E15 - Reprocess: Wind speed calibrations |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1
|
| Description: | EDITOR'S NOTE: The earliest portion of the period of time covered
by this DQR occurred prior to the begin date of regular ARM data.
Those data are not readily available from the ARM Archive but are
available by special request. The actual period of time covered
by this DQR is 930401-930824.1530.
Practically all of the information in this DQR is derived from
P930723.1 and C930830.1, both of which were submitted by Dick Hart.
The calibrations initially used for wind speeds on SMOS systems at
Coldwater (E8), Ashton (E9), the central faciality (E13), Ringwood (E15),
and Meeker (E20) were originally "generic"values, but analysis of the
N.I.S.T traceable calibration data reveals that use of these "generic"
calibrations produces data with insufficient accuracy. The calibrations
for the wind speed sensor associated with the instrument must be used
in the datalogger program in order to obtain data with a 1% uncertainty.
For the worst case, one wind speed sensor underestimates the wind speed
by 1.1 m/s at 30 m/s when the "generic" calibration is used. This is
on top of the 1% calibration uncertainty.
No unreported data loss occurred as a result of this calibration question,
but users of the data should adjust the wind speed values before analysis
involving these wind speed values. |
| Measurements: | sgp1smosE15.a0: - Mean Wind Speed(wspd)
- Wind Speed (vector averaged)(wspd_va)
sgp30smosE15.a1: - Standard Deviation of Wind Speed(sd_wspd)
- Mean Wind Speed(wspd)
- Wind Speed (vector averaged)(wspd_va)
|
| Subject: | SGP/SMOS/E15 - SMOS temperature anomaly on 11 MAY 1998 |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01
|
| Description: | For reasons unknown the E15, Ringwood OK, SMOS temperature measurements were
abnormally high and the relative humidity measurements were low between 1400
and 2300 GMT on 11 MAY 1998. |
| Measurements: | sgp1smosE15.a0: - Vapor Pressure (kiloPascals)(vap_pres)
- Beam 0 Temperature(temp)
- Relative humidity inside the instrument enclosure(rh)
sgp1440smosE15.a0: - Time of Maximum Relative Humidity(time_max_rh)
- Maximum Vapor Pressure(max_vap_pres)
- Time of Minimum Temperature(time_min_temp)
- Maximum Relative Humidity(max_rh)
- Time of Maximum Vapor Pressure(time_max_vap_pres)
- Minimum Relative Humidity(min_rh)
- Minimum Vapor Pressure(min_vap_pres)
- Time of Minimum Vapor Pressure(time_min_vap_pres)
- Maximum Temperature(max_temp)
- Minimum Temperature(min_temp)
- Time of Minimum Relative Humidity(time_min_rh)
- Time of Maximum Temperature(time_max_temp)
sgp30smosE15.a1: - Relative humidity inside the instrument enclosure(rh)
- Standard Deviation of Relative Humidity(sd_rh)
- Standard Deviation of Air Temperature(sd_temp)
- Beam 0 Temperature(temp)
- Vapor Pressure (kiloPascals)(vap_pres)
- Standard Deviation of Vapor Pressure(sd_vap_pres)
sgp1smosE15.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsmosE15.01: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
|
| Subject: | SGP/SMOS/E15 - Incorrect SMOS temperatures at E15 |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.00, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01
|
| Description: | The temperatures reported by the SMOS at E15 started drifting high at about
1300 GMT on 1 JUN 1998 until reporting 72.6 C, and then the sensor failed.
It started reporting correctly again at about 1930 GMT on 2 JUN 1998. The
humidity data reported during this period is either questionable or missing.
The cause of the drift and subsequent failure as well as the cause of recovery
are unknown. The techs reported no problems during the bi-weekly check on
2 JUN 1998 at 1850 GMT. |
| Measurements: | sgp1smosE15.a0: - Vapor Pressure (kiloPascals)(vap_pres)
- Beam 0 Temperature(temp)
- Relative humidity inside the instrument enclosure(rh)
sgp1440smosE15.a0: - Time of Maximum Relative Humidity(time_max_rh)
- Maximum Vapor Pressure(max_vap_pres)
- Time of Minimum Temperature(time_min_temp)
- Maximum Relative Humidity(max_rh)
- Time of Maximum Vapor Pressure(time_max_vap_pres)
- Minimum Relative Humidity(min_rh)
- Minimum Vapor Pressure(min_vap_pres)
- Time of Minimum Vapor Pressure(time_min_vap_pres)
- Maximum Temperature(max_temp)
- Minimum Temperature(min_temp)
- Time of Minimum Relative Humidity(time_min_rh)
- Time of Maximum Temperature(time_max_temp)
sgp30smosE15.a1: - Relative humidity inside the instrument enclosure(rh)
- Standard Deviation of Relative Humidity(sd_rh)
- Standard Deviation of Air Temperature(sd_temp)
- Beam 0 Temperature(temp)
- Vapor Pressure (kiloPascals)(vap_pres)
- Standard Deviation of Vapor Pressure(sd_vap_pres)
sgp1smosE15.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsmosE15.01: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
|