| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D010713.25 | SGP/SMOS/E11 - E11 SMOS Wind speed and direction data incorrect | sgp1smosE11.a0, sgp30smosE11.a1 |
| D010713.29 | SGP/SMOS/E15 - E15 SMOS Wind speed data incorrect | sgp1smosE15.a0, sgp30smosE15.a1 |
| D010713.31 | SGP/SMOS/E15 - E15 SMOS All data values missing | sgp1smosE15.a0, sgp30smosE15.a1 |
| D010713.5 | SGP/SMOS/E11 - E11 SMOS Data values off scale | sgp1smosE11.a0, sgp30smosE11.a1 |
| D010726.26 | SGP/SMOS/E15 - E15 SMOS DATA STREAMS MISSING | sgp30smosE15.a1, sgp1440smosE15.a0, sgp1smosE15.a0 |
| D010726.28 | SGP/SMOS/E15 - E15 SMOS ALL DATA VALUES OFF SCALE | sgp30smosE15.a1, sgp1smosE15.a0 |
| D010726.6 | SGP/SMOS/E15 - E15 SMOS ALL DATA MISSING | sgp30smosE15.a1, sgp1440smosE15.a0, sgp1smosE15.a0 |
| D011026.1 | SGP/SMOS/E15 - E15 SMOS Precipitation Values Suspect | sgp1smosE15.b1, sgp30smosE15.b1 |
| D020117.15 | SGP/SMOS/E11 - E11 SMOS PRESSURE VALUES INCORRECT | sgp1smosE11.b1, sgp30smosE11.b1, sgp1smosE11.a1, sgp30smosE11.a1 |
| D020117.8 | SGP/SMOS/E15 - E15 SMOS DATA VALUES INCORRECT | sgp1smosE15.b1, sgp30smosE15.b1, sgp1smosE15.a1, sgp30smosE15.a1 |
| D020121.18 | SGP/SMOS/E15 - E15 SMOS ALL DATA OFF-SCALE | sgp30smosE15.a1, sgp1smosE15.a1, sgp30smosE15.b1, sgp1smosE15.b1 |
| D020207.4 | SGP/SMOS/E15 - E15 WIND SPEED DATA SUSPECT | sgp30smosE15.b1, sgp1smosE15.a1, sgp30smosE15.a1, sgp1smosE15.b1 |
| D020418.14 | SGP/SMOS/E11 - E11 SMOS WIND SPEED DATA INCORRECT | sgp1smosE11.b1, sgp30smosE11.b1, sgp30smosE11.a1, sgp1smosE11.a1 |
| D020418.16 | SGP/SMOS/E15 - E15 SMOS WIND SPEED DATA INCORRECT | sgp1smosE15.a1, sgp30smosE15.b1, sgp30smosE15.a1, sgp1smosE15.b1 |
| D020418.7 | SGP/SMOS/E15 - E15 SMOS DATA VALUES INCORRECT | sgp1smosE15.a1, sgp1smosE15.b1 |
| D020615.2 | SGP/SMOS/E15 - Reprocess: Wind speed calibrations | sgp1smosE15.a0, sgp30smosE15.a1 |
| D020620.2 | SGP/SMOS/E11 - Humidity sensor failed | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| D020620.23 | SGP/SMOS/E15 - Tower lowered for work on instrumentation | sgp1smosE15.a0, sgp30smosE15.a1 |
| D020620.3 | SGP/SMOS/E11 - E11 SMOS lowered to surface to install counterweights | sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| D020620.44 | SGP/SMOS/E15 - E15 SMOS lowered to surface to install counterweights | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| D020910.13 | SGP/SMOS/E11 - Rain Gauge Inoperative | sgp1smosE11.a1, sgp1smosE11.b1, sgp30smosE11.a1, sgp30smosE11.b1 |
| D020910.27 | SGP/SMOS/E15 - 1 minute Data Values Incorrect | sgp1smosE15.a1, sgp1smosE15.b1 |
| D020910.30 | SGP/SMOS/E11 - 1 minute Data Values Incorrect | sgp1smosE11.a1, sgp1smosE11.b1 |
| D020911.10 | SGP/SMOS/E11 - 1 minute Data Values Incorrect | sgp1smosE11.a1, sgp1smosE11.b1 |
| D030131.3 | SGP/SMOS/E15 - Precip Data Questionable | sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| D030206.6 | SGP/SMOS/E15 - RH% VALUES INCORRECT | sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| D030508.7 | SGP/SMOS/E15 - E15 SMOS RH% VALUES INCORRECT | sgp1smosE15.a1, sgp1smosE15.b1 |
| D030521.22 | SGP/SMOS/E15 - E15 SMOS RH% VALUES SUSPECT | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| D031114.3 | SGP/SMOS/E15 - RH and calculated values incorrect | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| D040318.14 | SGP/SMOS/E15 - 6-month Calibration Checks | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D040318.15 | SGP/SMOS/E15 - 6-month Calibration Checks | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| D040318.16 | SGP/SMOS/E15 - 6-month Calibration Checks | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D040318.5 | SGP/SMOS/E11 - 6-month Calibration Checks | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| D040318.6 | SGP/SMOS/E11 - 6-month Calibration Checks | sgp1440smosE11.a1, sgp1smosE11.a1, sgp1smosE11.b1, sgp30smosE11.a1, sgp30smosE11.b1 |
| D040318.7 | SGP/SMOS/E11 - 6-month Calibration Checks | sgp30smosE11.b1, sgp1440smosE11.b1, sgp1smosE11.b1 |
| D040524.2 | SGP/SMOS/E11 - Sensor failing during saturation conditions | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D050131.14 | SGP/SMOS/E11 - Missing data due to ice storm | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D050131.16 | SGP/SMOS/E15 - Data missing due to ice storm | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D050131.17 | SGP/SMOS/E15 - Windspeed sensor frozen by ice storm | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D050209.11 | SGP/SMOS/E15 - Wind Data Suspect | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D050209.9 | SGP/SMOS/E11 - Wind Data Suspect | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D060110.1 | SGP/SMOS/E15 - Barometer data missing or incorrect | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D060302.1 | SGP/SMOS/E11 - Reprocess: Barometer data factor of 10 too high. | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D060320.1 | SGP/SMOS/E15 - Wind Direction Values Intermittently Incorrect | sgp1smosE15.b1, sgp30smosE15.b1 |
| D060321.1 | SGP/SMOS/E15 - Reprocess: Barometer data a factor of 10 too high. | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D080116.12 | SGP/SMOS/E11 - Wind Data Incorrect Due to Icing | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D080116.14 | SGP/SMOS/E15 - Wind Data Incorrect Due to Icing | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D080222.4 | SGP/SMOS - Snowfall caused delayed count of precip | sgp1smosE1.b1, sgp1smosE11.b1, sgp1smosE13.b1, sgp1smosE15.b1, sgp1smosE20.b1, sgp1smosE21.b1, sgp1smosE24.b1, sgp1smosE27.b1, sgp1smosE3.b1, sgp1smosE4.b1, sgp1smosE5.b1, sgp1smosE6.b1, sgp1smosE7.b1, sgp1smosE8.b1, sgp1smosE9.b1, sgp30smosE1.b1, sgp30smosE11.b1, sgp30smosE13.b1, sgp30smosE15.b1, sgp30smosE20.b1, sgp30smosE21.b1, sgp30smosE24.b1, sgp30smosE27.b1, sgp30smosE3.b1, sgp30smosE4.b1, sgp30smosE5.b1, sgp30smosE6.b1, sgp30smosE7.b1, sgp30smosE8.b1, sgp30smosE9.b1 |
| D080820.13 | SGP/SMOS/E15 - Missing Data | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D080820.6 | SGP/SMOS/E11 - Missing Data | sgp1440smosE11.a1, sgp1smosE11.b1, sgp30smosE11.b1 |
| D080820.7 | SGP/SMOS/E11 - Missing Data | sgp1smosE11.b1, sgp30smosE11.b1, sgp1440smosE11.b1 |
| D080828.2 | SGP/SMOS/E15 - Missing Data | sgp1440smosE15.a1, sgp1smosE15.b1, sgp30smosE15.b1 |
| D081010.9 | SGP/SMOS/E11 - RH Values Incorrect | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| D940503.2 | SGP/TWR/C1 - Intermittent data loss or corruption due to maintenance | sgp1440twr21xC1.a0, sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D940708.1 | SGP/TWR21x/C1 - Aspirator values affected by sudden T/RH changes | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D940720.2 | SGP/TWR/C1 - Tower lowered for maintenance | sgp1440twr21xC1.a0, sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D940920.2 | SGP/TWR/C1 - Missing data | sgp30twr21xC1.a1, sgp1twr21xC1.a0 |
| D941024.3 | SGP/SMOS/E15 - Tower lowered for work on instrumentation | sgp1smosE15.a0, sgp30smosE15.a1 |
| D941205.1 | SGP/TWR21x/C1 - Temperature Offset | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D950626.13 | SGP/TWR21x/C1 - Aspirator values affected by sudden T/RH changes | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D950808.1 | SGP/SMOS/E15 - RH sensor failed | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| D950828.4 | SGP/SMOS/E11 - Bad Humidity Data | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| D950922.3 | SGP/TWR21x/C1 - RH Probe Failure | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D950922.4 | SGP/TWR21x/C1 - Teperature biased low | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D951009.8 | SGP/SMOS/E11 - System down for SIROS maintenance | sgp1smosE11.a0, sgp30smosE11.a1 |
| D951101.6 | SGP/SMOS/E15 - Incorrect data | sgp1smosE15.a0, sgp30smosE15.a1 |
| D951103.1 | SGP/SMOS/E11 - Humidity sensor failed | sgp1smosE11.a0, sgp30smosE11.a1 |
| D951127.4 | SGP/TWR21x/C1 - RH Offset removed | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| D951219.1 | SGP/SMOS/E11 - Questionable humidity data from SMOS E11 | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.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 | sgp1smosE15.a0, sgp30smosE15.a1, sgp1440smosE13.a0 |
| D980401.4 | SGP/SMOS/E15 - Incorrect humidity data from E15 SMOS | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| D980401.5 | SGP/SMOS/E15 - RH probe failure and replacement at E15 | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| D980521.1 | SGP/SMOS/E15 - SMOS temperature anomaly on 11 MAY 1998 | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| D980616.1 | SGP/SMOS/E15 - Incorrect SMOS temperatures at E15 | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| D980629.1 | SGP/SMOS/E15 - Incorrect data during E15 SMOS repair | sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| D991109.10 | SGP/SMOS/E11 - E11 SMOS down for tower replacement | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| D991109.12 | SGP/SMOS/E15 - E15 SMOS down for tower replacement | sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00, sgp1440smosE15.a0, sgp1smosE15.a0 |
| D991109.19 | SGP/SMOS/E15 - E15 SMOS lowered to surface to install counterweights | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| D991109.21 | SGP/SMOS/E11 - E11 SMOS lowered to surface to install counterweights | sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/28/2001 | 1026 | 01/29/2001 | 2106 |
| Subject: | SGP/SMOS/E11 - E11 SMOS Wind speed and direction data incorrect |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | Wind speed and direction sensor had ice accumulation casusing data to be incorrect. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/28/2001 | 0409 | 01/29/2001 | 1608 |
| Subject: | SGP/SMOS/E15 - E15 SMOS Wind speed data incorrect |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | Wind speed sensor had ice accumulation, causing data to be incorrect. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/28/2001 | 0611 | 01/29/2001 | 1531 |
| Subject: | SGP/SMOS/E15 - E15 SMOS All data values missing |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | All data values missing for the time period. Unknown cause but suspect pwer failure. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/09/2001 | 1831 | 01/09/2001 | 2134 |
| Subject: | SGP/SMOS/E11 - E11 SMOS Data values off scale |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | All data values off scale or incorrect due to routine maintenance and lowering of the tower. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/05/2001 | 0354 | 03/06/2001 | 0601 |
| Subject: | SGP/SMOS/E15 - E15 SMOS DATA STREAMS MISSING |
| DataStreams: | sgp30smosE15.a1, sgp1440smosE15.a0, sgp1smosE15.a0 |
| Description: | All data streams missing. Reason unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/06/2001 | 1638 | 03/06/2001 | 1934 |
| Subject: | SGP/SMOS/E15 - E15 SMOS ALL DATA VALUES OFF SCALE |
| DataStreams: | sgp30smosE15.a1, sgp1smosE15.a0 |
| Description: | All data values off scale during routine maintenance. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/26/2001 | 0116 | 02/27/2001 | 0531 |
| Subject: | SGP/SMOS/E15 - E15 SMOS ALL DATA MISSING |
| DataStreams: | sgp30smosE15.a1, sgp1440smosE15.a0, sgp1smosE15.a0 |
| Description: | All data streams missing. Reason unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/11/2001 | 0000 | 06/12/2001 | 1841 |
| Subject: | SGP/SMOS/E15 - E15 SMOS Precipitation Values Suspect |
| DataStreams: | sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Precipitation not recorded consistently due to loose wire. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/21/2001 | 2327 | 05/23/2001 | 0109 |
| Subject: | SGP/SMOS/E11 - E11 SMOS PRESSURE VALUES INCORRECT |
| DataStreams: | sgp1smosE11.b1, sgp30smosE11.b1, sgp1smosE11.a1, sgp30smosE11.a1 |
| Description: | Pressure values reported as -9999, reason unknown. |
| Measurements: | sgp1smosE11.a1:
sgp30smosE11.a1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/01/2001 | 1630 | 05/01/2001 | 1830 |
| Subject: | SGP/SMOS/E15 - E15 SMOS DATA VALUES INCORRECT |
| DataStreams: | sgp1smosE15.b1, sgp30smosE15.b1, sgp1smosE15.a1, sgp30smosE15.a1 |
| Description: | All data values off-scale during routine maintenance. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/25/2001 | 1424 | 07/25/2001 | 1801 |
| Subject: | SGP/SMOS/E15 - E15 SMOS ALL DATA OFF-SCALE |
| DataStreams: | sgp30smosE15.a1, sgp1smosE15.a1, sgp30smosE15.b1, sgp1smosE15.b1 |
| Description: | All data values off-scale during routine maintenance. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/02/2001 | 0000 | 11/27/2001 | 1701 |
| Subject: | SGP/SMOS/E15 - E15 WIND SPEED DATA SUSPECT |
| DataStreams: | sgp30smosE15.b1, sgp1smosE15.a1, sgp30smosE15.a1, sgp1smosE15.b1 |
| Description: | Wind speed data values supect, sensor failed 6 month field calibration RPM checks. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/30/2002 | 0700 | 01/30/2002 | 1800 |
| Subject: | SGP/SMOS/E11 - E11 SMOS WIND SPEED DATA INCORRECT |
| DataStreams: | sgp1smosE11.b1, sgp30smosE11.b1, sgp30smosE11.a1, sgp1smosE11.a1 |
| Description: | Wind speed values incorrect due to ice accumulation on the sensor during an ice storm. |
| Measurements: | sgp1smosE11.a1:
sgp30smosE11.a1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/30/2002 | 0800 | 01/30/2002 | 1800 |
| Subject: | SGP/SMOS/E15 - E15 SMOS WIND SPEED DATA INCORRECT |
| DataStreams: | sgp1smosE15.a1, sgp30smosE15.b1, sgp30smosE15.a1, sgp1smosE15.b1 |
| Description: | Wind speed data incorrect due to sensor being frozen. Ice accumulated on sensor during an ice storm. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/22/2002 | 1655 | 01/22/2002 | 1657 |
| Subject: | SGP/SMOS/E15 - E15 SMOS DATA VALUES INCORRECT |
| DataStreams: | sgp1smosE15.a1, sgp1smosE15.b1 |
| Description: | The 1-minute data values are all off-scale due to tower being lowered for routine maintenance. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/13/1993 | 1401 | 08/24/1993 | 1530 |
| 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: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/17/1995 | 1530 | 10/31/1995 | 1800 |
| Subject: | SGP/SMOS/E11 - Humidity sensor failed |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | RH Sensor failed. Replaced on 31 OCT 95. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
sgp1440smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/20/1994 | 1600 | 10/20/1994 | 1730 |
| Subject: | SGP/SMOS/E15 - Tower lowered for work on instrumentation |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | Due to tower being lowered to work on instrumentation, all wind data taken between 1600 and 1730 GMT on 20 OCT 94 are incorrect. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/05/1999 | 1005 | 10/05/1999 | 1035 |
| Subject: | SGP/SMOS/E11 - E11 SMOS lowered to surface to install counterweights |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| Description: | The E11 SMOS was lowered to the surface on 5 OCT 1999 between 1005 and 1035 GMT while counterweights were installed. All wind speed and direction data are incorrect during this period. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.00:
sgp1smosE11.a0:
sgpsmosE11.01:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/05/1999 | 0915 | 10/05/1999 | 0932 |
| Subject: | SGP/SMOS/E15 - E15 SMOS lowered to surface to install counterweights |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| Description: | The E15 SMOS was lowered to the surface on 5 OCT 1999 between 0915 and 0932 GMT while counterweights were installed. All wind speeds and direction data are incorrect during this period. |
| Measurements: | sgp30smosE15.a1:
sgpsmosE15.01:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/28/2002 | 0000 | 05/18/2002 | 0000 |
| Subject: | SGP/SMOS/E11 - Rain Gauge Inoperative |
| DataStreams: | sgp1smosE11.a1, sgp1smosE11.b1, sgp30smosE11.a1, sgp30smosE11.b1 |
| Description: | Rain gauge was found to be inoperative by technicians on 05/17/2002. Last precipitation measurement by site was on 04/27/2002. |
| Measurements: | sgp1smosE11.a1:
sgp30smosE11.a1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/11/2002 | 1712 | 06/11/2002 | 1721 |
| Subject: | SGP/SMOS/E15 - 1 minute Data Values Incorrect |
| DataStreams: | sgp1smosE15.a1, sgp1smosE15.b1 |
| Description: | Data values incorrect due to tower being lowered for wind monitor replacement. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/11/2002 | 1857 | 06/11/2002 | 1907 |
| Subject: | SGP/SMOS/E11 - 1 minute Data Values Incorrect |
| DataStreams: | sgp1smosE11.a1, sgp1smosE11.b1 |
| Description: | Data values off-scale during barometer re-test. |
| Measurements: | sgp1smosE11.a1:
sgp1smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/25/2002 | 1558 | 06/25/2002 | 1643 |
| Subject: | SGP/SMOS/E11 - 1 minute Data Values Incorrect |
| DataStreams: | sgp1smosE11.a1, sgp1smosE11.b1 |
| Description: | Data values incorrect due to barometer and T/RH probe re-test from 15:58 - 16:20 GMT. All T/RH/water vapor measurements off-scale from 16:38 - 16:43 GMT during T/RH probe replacement. |
| Measurements: | sgp1smosE11.a1:
sgp1smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/02/2002 | 0000 | 10/15/2002 | 1005 |
| Subject: | SGP/SMOS/E15 - Precip Data Questionable |
| DataStreams: | sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| Description: | Precip values were questionable on 10/02/2002, 10/03/2002, & 10/05/2002. Reed switch was replaced. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.a1:
sgp1smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/13/2002 | 0000 | 12/13/2002 | 1438 |
| Subject: | SGP/SMOS/E15 - RH% VALUES INCORRECT |
| DataStreams: | sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| Description: | RH% values were reported as greater than 104%. Possible moisture on the sensor as readings returned to normal after end time. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/16/2003 | 0257 | 01/17/2003 | 1947 |
| Subject: | SGP/SMOS/E15 - E15 SMOS RH% VALUES INCORRECT |
| DataStreams: | sgp1smosE15.a1, sgp1smosE15.b1 |
| Description: | RH% values reported as -0.07% during indicated time period. It is possible that the sensor element had moisture contamination. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/19/2003 | 0324 | 03/04/2003 | 1710 |
| Subject: | SGP/SMOS/E15 - E15 SMOS RH% VALUES SUSPECT |
| DataStreams: | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| Description: | RH% readings intermittently reported as 0.14% during period. Sensor was replaced. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.a1:
sgp1smosE15.a1:
sgp30smosE15.b1:
sgp1440smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/07/2003 | 1425 | 10/07/2003 | 1428 |
| 10/09/2003 | 1005 | 10/09/2003 | 1509 |
| Subject: | SGP/SMOS/E15 - RH and calculated values incorrect |
| DataStreams: | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| Description: | The sensor element for RH became wet due to heavy rainfall and winds. RH values were incorrect along with any calculated values from the RH data (vapor pressure). The 30 minute and daily data values should be considered suspect. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.a1:
sgp1smosE15.a1:
sgp30smosE15.b1:
sgp1440smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/14/1994 | 1445 | 06/14/1994 | 1645 |
| 11/21/1994 | 1632 | 11/21/1994 | 1832 |
| 04/24/1995 | 1640 | 04/24/1995 | 1900 |
| 10/10/1995 | 1600 | 10/10/1995 | 2050 |
| 04/23/1996 | 1724 | 04/23/1996 | 1830 |
| 11/05/1996 | 1645 | 11/05/1996 | 1930 |
| 04/22/1997 | 1528 | 04/22/1997 | 1800 |
| 05/05/1998 | 1412 | 05/05/1998 | 1612 |
| 12/03/1998 | 1640 | 12/03/1998 | 1655 |
| 04/20/1999 | 1500 | 04/20/1999 | 1755 |
| 10/05/1999 | 1545 | 10/05/1999 | 1615 |
| 04/18/2000 | 1500 | 04/18/2000 | 1540 |
| 10/17/2000 | 1515 | 10/17/2000 | 1705 |
| Subject: | SGP/SMOS/E15 - 6-month Calibration Checks |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | During the time periods specified, the SMOS.E15 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/17/2001 | 1834 | 04/17/2001 | 2005 |
| 10/02/2001 | 1608 | 10/02/2001 | 1705 |
| 05/14/2002 | 1536 | 05/14/2002 | 1640 |
| 11/12/2002 | 1705 | 11/12/2002 | 1745 |
| 04/29/2003 | 1530 | 04/29/2003 | 1615 |
| Subject: | SGP/SMOS/E15 - 6-month Calibration Checks |
| DataStreams: | sgp1440smosE15.a1, sgp1smosE15.a1, sgp1smosE15.b1, sgp30smosE15.a1, sgp30smosE15.b1 |
| Description: | During the time periods specified, the SMOS.E15 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp1smosE15.b1:
sgp1smosE15.a1:
sgp30smosE15.a1:
sgp30smosE15.b1:
sgp1440smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/14/2003 | 1700 | 10/14/2003 | 1730 |
| 04/13/2004 | 1615 | 04/13/2004 | 1700 |
| 10/26/2004 | 1640 | 10/26/2004 | 1705 |
| 04/12/2005 | 1600 | 04/12/2005 | 1630 |
| 11/21/2005 | 1753 | 11/21/2005 | 1850 |
| 04/08/2008 | 1700 | 04/08/2008 | 1828 |
| 10/21/2008 | 1800 | 10/21/2008 | 1840 |
| 04/25/2006 | 1555 | 04/25/2006 | 1652 |
| 10/10/2006 | 1612 | 10/10/2006 | 1645 |
| 04/20/2007 | 1450 | 04/20/2007 | 1525 |
| 10/10/2007 | 1557 | 10/10/2007 | 1619 |
| Subject: | SGP/SMOS/E15 - 6-month Calibration Checks |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | During the time periods specified, the SMOS.E15 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/17/1995 | 1422 | 10/17/1995 | 1622 |
| 04/16/1996 | 2130 | 04/16/1996 | 2330 |
| 10/29/1996 | 1700 | 10/29/1996 | 1810 |
| 04/29/1997 | 1550 | 04/29/1997 | 1830 |
| 10/28/1997 | 1645 | 10/28/1997 | 1900 |
| 05/05/1998 | 1900 | 05/05/1998 | 1945 |
| 12/03/1998 | 1940 | 12/03/1998 | 1955 |
| 04/20/1999 | 1830 | 04/20/1999 | 2215 |
| 10/05/1999 | 1843 | 10/05/1999 | 1935 |
| 04/18/2000 | 1820 | 04/18/2000 | 1855 |
| 10/17/2000 | 1858 | 10/17/2000 | 2000 |
| Subject: | SGP/SMOS/E11 - 6-month Calibration Checks |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | During the time periods specified, the SMOS.E11 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp30smosE11.a1:
sgp1440smosE11.a0:
sgp1smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/17/2001 | 1530 | 04/17/2001 | 1630 |
| 10/02/2001 | 1915 | 10/02/2001 | 2000 |
| 05/14/2002 | 1800 | 05/14/2002 | 2045 |
| 11/12/2002 | 1920 | 11/12/2002 | 1938 |
| 04/29/2003 | 1825 | 04/29/2003 | 1910 |
| Subject: | SGP/SMOS/E11 - 6-month Calibration Checks |
| DataStreams: | sgp1440smosE11.a1, sgp1smosE11.a1, sgp1smosE11.b1, sgp30smosE11.a1, sgp30smosE11.b1 |
| Description: | During the time periods specified, the SMOS.E11 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp1smosE11.a1:
sgp30smosE11.a1:
sgp1440smosE11.a1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/10/2006 | 1826 | 10/10/2006 | 1847 |
| 04/20/2007 | 1758 | 04/20/2007 | 1824 |
| 10/10/2007 | 1826 | 10/10/2007 | 1838 |
| 10/21/2008 | 1605 | 10/21/2008 | 1620 |
| 04/08/2008 | 1940 | 04/08/2008 | 2025 |
| 10/14/2003 | 1930 | 10/14/2003 | 1941 |
| 04/13/2004 | 2011 | 04/13/2004 | 2035 |
| 10/26/2004 | 1840 | 10/26/2004 | 1900 |
| 04/12/2005 | 1821 | 04/12/2005 | 1840 |
| 11/21/2005 | 2057 | 11/21/2005 | 2110 |
| 04/25/2006 | 1827 | 04/25/2006 | 1900 |
| Subject: | SGP/SMOS/E11 - 6-month Calibration Checks |
| DataStreams: | sgp30smosE11.b1, sgp1440smosE11.b1, sgp1smosE11.b1 |
| Description: | During the time periods specified, the SMOS.E11 tower was lowered for 6-month Calibration Checks. During these times wind data are incorrect and temperature and humidity data may be incorrect. Note, exact times when tower was down or maintenance was being performed is sometimes unknown. Users should use the remaining data from these days with caution. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/14/2004 | 0505 | 07/13/2004 | 1525 |
| Subject: | SGP/SMOS/E11 - Sensor failing during saturation conditions |
| DataStreams: | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | RH% readings from this sensor exceeded the 104% threshold during saturated conditions. Sensor replaced. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/05/2005 | 0602 | 01/10/2005 | 1923 |
| Subject: | SGP/SMOS/E11 - Missing data due to ice storm |
| DataStreams: | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | Data are missing due to severe ice storm. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/05/2005 | 0202 | 01/07/2005 | 2359 |
| Subject: | SGP/SMOS/E15 - Data missing due to ice storm |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Data are missing due to severe ice storm. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/08/2005 | 0000 | 01/08/2005 | 1645 |
| Subject: | SGP/SMOS/E15 - Windspeed sensor frozen by ice storm |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Windspeed sensor frozen by ice storm during the period specified. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/04/2005 | 0000 | 02/03/2005 | 2359 |
| Subject: | SGP/SMOS/E15 - Wind Data Suspect |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Wind speed and direction data suspect during time period due to icing. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/04/2005 | 0000 | 02/03/2005 | 2359 |
| Subject: | SGP/SMOS/E11 - Wind Data Suspect |
| DataStreams: | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | Wind speed and direction data suspect during time period due to icing. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/03/2006 | 1705 | 01/31/2006 | 1804 |
| Subject: | SGP/SMOS/E15 - Barometer data missing or incorrect |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | After the data logger operating system upgrade on 01/03 barometric pressure was missing or reporting very low values. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/28/2006 | 2018 | 03/13/2006 | 1630 |
| Subject: | SGP/SMOS/E11 - Reprocess: Barometer data factor of 10 too high. |
| DataStreams: | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | The program was modified and an incorrect multiplier was used so that the barometer data was reported in hPa instead of kPa. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/07/2006 | 0517 | 03/28/2006 | 1904 |
| Subject: | SGP/SMOS/E15 - Wind Direction Values Intermittently Incorrect |
| DataStreams: | sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Intermittently the wind direction was reported at exactly 353 degrees for long time periods. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/28/2006 | 1825 | 03/13/2006 | 0754 |
| Subject: | SGP/SMOS/E15 - Reprocess: Barometer data a factor of 10 too high. |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | The program was modified and an incorrect multiplier was used so that the barometer data was reported in hPa instead of kPa. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/11/2007 | 2327 | 12/12/2007 | 1907 |
| Subject: | SGP/SMOS/E11 - Wind Data Incorrect Due to Icing |
| DataStreams: | sgp1440smosE11.b1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | An ice storm caused the wind data from the RM Young wind sensor to be incorrect. In many instances it was frozen and unmoving, at times it measured values but those are extremely suspect. |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/11/2007 | 0727 | 12/12/2007 | 0001 |
| Subject: | SGP/SMOS/E15 - Wind Data Incorrect Due to Icing |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | An ice storm caused the wind data from the RM Young wind sensor to be incorrect. In many instances it was frozen and unmoving, at times it measured values but those are extremely suspect. |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/31/2008 | 0000 | 02/02/2008 | 2000 |
| Subject: | SGP/SMOS - Snowfall caused delayed count of precip |
| DataStreams: | sgp1smosE1.b1, sgp1smosE11.b1, sgp1smosE13.b1, sgp1smosE15.b1, sgp1smosE20.b1, sgp1smosE21.b1, sgp1smosE24.b1, sgp1smosE27.b1, sgp1smosE3.b1, sgp1smosE4.b1, sgp1smosE5.b1, sgp1smosE6.b1, sgp1smosE7.b1, sgp1smosE8.b1, sgp1smosE9.b1, sgp30smosE1.b1, sgp30smosE11.b1, sgp30smosE13.b1, sgp30smosE15.b1, sgp30smosE20.b1, sgp30smosE21.b1, sgp30smosE24.b1, sgp30smosE27.b1, sgp30smosE3.b1, sgp30smosE4.b1, sgp30smosE5.b1, sgp30smosE6.b1, sgp30smosE7.b1, sgp30smosE8.b1, sgp30smosE9.b1 |
| Description: | A snow/ice storm moved through the SGP region on 01/31/08 bringing below-freezing temperatures, affecting the precip field. Data is suspect during the date/time range specified due to melting ice after temperatures warmed above freezing. |
| Measurements: | sgp1smosE27.b1:
sgp30smosE7.b1:
sgp30smosE20.b1:
sgp30smosE21.b1:
sgp30smosE6.b1:
sgp30smosE8.b1:
sgp1smosE3.b1:
sgp1smosE4.b1:
sgp30smosE15.b1:
sgp1smosE11.b1:
sgp30smosE4.b1:
sgp1smosE20.b1:
sgp30smosE5.b1:
sgp1smosE15.b1:
sgp30smosE3.b1:
sgp30smosE9.b1:
sgp1smosE5.b1:
sgp1smosE7.b1:
sgp30smosE11.b1:
sgp30smosE27.b1:
sgp1smosE8.b1:
sgp1smosE6.b1:
sgp30smosE1.b1:
sgp1smosE24.b1:
sgp1smosE21.b1:
sgp30smosE24.b1:
sgp1smosE1.b1:
sgp1smosE13.b1:
sgp30smosE13.b1:
sgp1smosE9.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/29/2006 | 1300 | 12/04/2006 | 2200 |
| 01/17/2007 | 1600 | 01/21/2007 | 1700 |
| Subject: | SGP/SMOS/E15 - Missing Data |
| DataStreams: | sgp1440smosE15.b1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Data are missing and unrecoverable |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 09/07/2001 | 1300 | 09/10/2001 | 0800 |
| 10/05/2001 | 0100 | 10/15/2001 | 2230 |
| 11/07/2001 | 1500 | 11/13/2001 | 2030 |
| 01/30/2002 | 2330 | 02/05/2002 | 1400 |
| 06/13/2002 | 0100 | 06/18/2002 | 1500 |
| Subject: | SGP/SMOS/E11 - Missing Data |
| DataStreams: | sgp1440smosE11.a1, sgp1smosE11.b1, sgp30smosE11.b1 |
| Description: | Data are missing and unrecoverable |
| Measurements: | sgp1440smosE11.a1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/25/2006 | 1800 | 04/27/2006 | 2300 |
| 08/26/2006 | 0100 | 08/28/2006 | 1730 |
| 09/20/2006 | 1600 | 09/26/2006 | 1630 |
| 05/24/2008 | 0800 | 05/27/2008 | 0230 |
| 04/13/2006 | 2200 | 04/17/2006 | 2300 |
| 09/16/2005 | 1400 | 09/23/2005 | 0700 |
| Subject: | SGP/SMOS/E11 - Missing Data |
| DataStreams: | sgp1smosE11.b1, sgp30smosE11.b1, sgp1440smosE11.b1 |
| Description: | Data are missing and unrecoverable |
| Measurements: | sgp1440smosE11.b1:
sgp1smosE11.b1:
sgp30smosE11.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/30/2002 | 1800 | 02/15/2002 | 1600 |
| 06/13/2002 | 0100 | 06/21/2002 | 0930 |
| 10/22/2002 | 0530 | 10/24/2002 | 1830 |
| 10/24/2002 | 2000 | 10/26/2002 | 0530 |
| 10/26/2002 | 1800 | 10/28/2002 | 0330 |
| 10/29/2002 | 0230 | 10/31/2002 | 2200 |
| Subject: | SGP/SMOS/E15 - Missing Data |
| DataStreams: | sgp1440smosE15.a1, sgp1smosE15.b1, sgp30smosE15.b1 |
| Description: | Data are missing and unrecoverable |
| Measurements: | sgp1smosE15.b1:
sgp30smosE15.b1:
sgp1440smosE15.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/12/2000 | 1643 | 06/12/2000 | 1900 |
| 07/22/2000 | 1116 | 07/25/2000 | 1900 |
| Subject: | SGP/SMOS/E11 - RH Values Incorrect |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | RH% values incorrect along with derived values. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
sgp1440smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/12/1994 | 2325 | 05/01/1994 | 2241 |
| Subject: | SGP/TWR/C1 - Intermittent data loss or corruption due to maintenance |
| DataStreams: | sgp1440twr21xC1.a0, sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | An aerosol instrument was mounted on the same sixty meter level carriage as the
temperature/relative humidity system occupies, for the Spring IOP. As a consequence of almost
daily maintenance on the aerosol instrument, the carriage was lowered to ground level on a
number of occasions, resulting in no temperature and relative humidity data during those
maintenance periods. Most of the values in the one minute and 30 minute data are offscale
if incorrect. Daily maximums and minimums may have been affected as well. All data fields
during the following time periods are considered to be incorrect:
Date One Minute Thirty Minute
4/12 23:25-23:59 2330
4/13 00:00-00:10 0000, 0030
4/15 18:20-23:59 1830, 1900, 1930, 2000, 2030, 2300, 2330
4/16 23:04-23:59 0000, 2330
4/17 00:00-00:09 0000, 0030, 2300, 2330
22:59-23:59
4/18 00:00-00:13 0000, 0030, 2300, 2330
22:57-23:59
4/19 00:00-00:07 0000, 0030, 2300, 2330
22:54-23:56
4/20 22:49-23:55 0000, 2300, 2330
4/21 19:58-21:11 0000, 2000, 2030, 2100, 2130
4/22 18:44-20:18 1900, 1930, 2000, 2030
4/24 18:21-19:46 1830, 1900, 1930, 2000
4/26 17:58-18:47 1800, 1830, 1900
4/27 00:38-00:52 0100
4/28 17:49-21:32 1800, 1830, 1900, 1930, 2000, 2030, 2100, 2130, 2200
4/30 14:49-15:32 1500, 1530, 1600
5/1 15:40-16:34 1600, 1630, 1700, 2230, 2300
22:13-22:41
Possible that daily maximums and minimums of temperature, relative humidity, and vapor
pressure, as well as the times of those may be impacted by offscale data. |
| Measurements: | sgp1440twr21xC1.a0:
sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/30/1994 | 0221 | 07/02/1994 | 0221 |
| 06/30/1994 | 0628 | 07/02/1994 | 0628 |
| Subject: | SGP/TWR21x/C1 - Aspirator values affected by sudden T/RH changes |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | During 30 June and 02 July, 1994 a meteorological condition occurred that resulted in one
minute and 30 minute aspirator values to be below acceptable levels. As has happened
before, during times of rapid change in temperature and relative humidity (the former is
mostly responsible) the aspirator value can fall below acceptable levels, even though there
is no evidence in the T/RH data that aspirator flow has been reduced.
However, under such rapid change conditions it is virtually impossible to tell if T or RH
have been affected. I know from my past experience with the flow sensor in the aspirator
unit that during rapid temperature decreases, the heater in the flow sensor cools off
and does not respond rapidly enough to warm up to the acceptable temperature that would
indicate proper flow. The flow sensor determines flow by sensing the temperature of the
heater; if the temperature is within an acceptable range, which is calibrated to flow, the
unit indicates proper flow. If the flow is too small (such as from a failed aspirator
fan) or if the heater cools off from a rapid ambient temperature decrease, the flow sensor
indicates an improper flow condition. The latter is the culprit during the specified times.
There is a tremendous variation in raw output of the flow sensor as a result simply of
very small fluctuations in aspirator flow; the flow sensor is a very sensitive device.
Therefore, there are periods such as those below when aspirator flow will be indicated as
incorrect, when the the aspirator is probably functioning properly and all other data values
are correct.
The affected aspirator values are (times are GMT):
1 minute 30 minute
30 June 1994 0221-0224
02 July 1994 0547-0551 0600-0630
0553-0555
0557-0558
0610-0611
0613-0616
0619
0621-0623
0628 |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/15/1995 | 1855 | 05/15/1995 | 1930 |
| 05/19/1995 | 1600 | 05/19/1995 | 2040 |
| 07/13/1994 | 1525 | 07/13/1994 | 1630 |
| 10/31/1994 | 2000 | 10/31/1994 | 2030 |
| 11/15/1994 | 1545 | 11/15/1994 | 1800 |
| Subject: | SGP/TWR/C1 - Tower lowered for maintenance |
| DataStreams: | sgp1440twr21xC1.a0, sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | The tower elevators were lowered for maintenance and/or data are offscale during routine maintenance. Daily max/min values are possibly affected. |
| Measurements: | sgp1440twr21xC1.a0:
sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/12/1993 | 1200 | 11/15/1993 | 0013 |
| 09/07/1994 | 1721 | 09/10/1994 | 0814 |
| 12/06/1995 | 1404 | 12/10/1995 | 0759 |
| Subject: | SGP/TWR/C1 - Missing data |
| DataStreams: | sgp30twr21xC1.a1, sgp1twr21xC1.a0 |
| Description: | Data are missing and unrecoverable. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/20/1994 | 1600 | 10/20/1994 | 1730 |
| Subject: | SGP/SMOS/E15 - Tower lowered for work on instrumentation |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | Due to tower being lowered to work on instrumentation, all temperature and humidity data taken between 1600 and 1730 GMT on 20 OCT 94 are questionable. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/05/1994 | 2030 | 11/15/1994 | 1530 |
| Subject: | SGP/TWR21x/C1 - Temperature Offset |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | On May 11, 1994 the site operators at the Central Facility had some difficulty performing
an ice bath check on the 60 meter Tower PRTD (platinum resistance temperature device).
After consulting with the mentor (me) they reperformed the check and appeared to obtain
good results (an output of 0.00 degrees C). However, this required a change in the
calibration ratio.
For the November 15, 1994 PRTD check I supplied a much more involved testing procedure
than had been used previously. The ice bath check on that day indicated that at zero
degrees C, the PRTD output was -1.37 degrees C. The calibration ratio was again adjusted,
resulting in a ratio that is consistent with those determined in the checks previous to May
1994. The new ratio gave a temperature of -0.001 degrees C in the ice bath.
The ratio used between May 11 and November 15, 1994 (at the times indicated above) was too
small, leading to an underestimation of temperature. Because of the technique used in
the Campbell Data Logger for the determination of temperature from a PRTD, the Nov. 15
initial ice bath reading of -1.37 degrees is essentially equivalent to an offset over the
range of ambient air temperatures. I confirmed this by measuring a range of temperature (0
to 37 degrees C) with a 21X and a reference PRTD in our laboratory at ANL, simultaneously
employing the two calibration ratios that we have used for the Tower PRTD after the past
two calibration checks.
Users of Central Facility Tower temperature data for the period listed above should add
1.37 degrees C to the data.
Since vapor pressure is calculated from the Tower temperature (degrees C) and relative
humidity (in %) measurements, vapor pressures for the period listed are too small by about
8% (the range is approximately 6% to 12%). Vapor pressure should be recalculated by the
user with the following equations:
CALCULATE VAPOR PRESSURE (IN KPA) FROM TEMPERATURE (T) AND
RELATIVE HUMIDITY (RH) USING THE COEFFICIENTS C0 THROUGH C6
C0=6.107799961
C1=4.436518521E-01
C2=1.428945805E-02
C3=2.650648471E-04
C4=3.031240396E-06
C5=2.034080948E-08
C6=6.136820929E-11
VAPOR PRESSURE=RH*(C0+C1*T+C2*T*T+C3*T*T*T+C4*T*T*T*T+
C5*T*T*T*T*T+C6*T*T*T*T*T*T)/1000.
Standard deviations of temperature and vapor pressure are probably very slightly
underestimated, but the error in them cannot be quantified as we do not have the 1 second
measurement data to recalculate them. Use with caution. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/14/1995 | 1600 | 04/14/1995 | 2004 |
| Subject: | SGP/TWR21x/C1 - Aspirator values affected by sudden T/RH changes |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | There are two general conditions under which the Central Facility 60 meter tower aspirator data indicates as lower than acceptable, even though aspirator flow is acceptable and T/RH data are correct. I think that the explanations below should accompany all Tower T/RH/aspirator data that is distributed, perhaps in the metadata. I would appreciate it if the PRB would discuss this possibility. During April 14, 1995 the Central Facility experienced high winds (10 to 14 m/s at ground level), which resulted in one minute and 30 minute aspirator values being below acceptable levels. This is not the only condition that can cause the aspirator to falsely indicate insufficient air flow. As reported in a DQR on July 8, 1994, during times of rapid change in temperature and relative humidity (the former is mostly responsible) the aspirator value can fall below acceptable levels, even though there is no evidence in the T/RH data that aspirator flow has been reduced. During rapid temperature decreases, the heater in the flow sensor cools off and does not respond rapidly enough to warm up to the acceptable temperature that would indicate proper flow. The flow sensor determines flow by sensing the temperature of the heater; if the temperature is within an acceptable range, which is calibrated to flow, the unit indicates proper flow. If the flow is too small (such as from a failed aspirator fan) or if the heater cools off from a rapid ambient temperature decrease or enhanced ambient wind flow (which is the case in this DQR), the flow sensor indicates an improper flow condition. There is a tremendous variation in raw output of the flow sensor as a result of very small fluctuations in aspirator flow; the flow sensor is a very sensitive device (almost too sensitive). Therefore, there are periods when aspirator flow will be indicated as incorrect, even though the aspirator is probably functioning properly. Data values are correct in this situation, as they are for the data period listed above. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/04/1995 | 0135 | 07/31/1995 | 1610 |
| Subject: | SGP/SMOS/E15 - RH sensor failed |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | RH sensor failed, most RH and vapor pressure readings questionable. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 08/01/1995 | 0600 | 08/22/1995 | 1600 |
| Subject: | SGP/SMOS/E11 - Bad Humidity Data |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | All SMOS E11 humidity data taken during this period are incorrect. The sensor was replaced 22 AUG 95 at 1600 GMT. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
sgp1440smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/14/1995 | 0000 | 09/19/1995 | 1715 |
| Subject: | SGP/TWR21x/C1 - RH Probe Failure |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | Beginning early in June 1995, the relative humidity probe output began to drift upwards. A check of the probe on May 19, 1995 by site operations personnel indicated that it was reporting 3% higher than an aspirated psychron (an ANL instrument that indicates dry and wet bulb temperatures within 0.1 degree of each other when both are dry). 3% is within the combined accuracies of the sensors (3% for the RH probe, 2% for the psychron). Comparison of the RH probe output, SMOS output, and Sonde outputs indicates that the RH probe was outputting approximately 5% to 10% high by June 30. By August 15 it appeared to be near 10% to 15% high. On September 19, 1995 Chris Martin (of site operations) and I compared the RH probe with the HMI31 at 3 meters (tower carriages lowered). The RH probe indicated 100.9% whereas the HMI31 indicated 83%. Comparison of the HMI31 and the psychron indicated that the HMI31 reads 2% to 3% lower than the psychron. So the difference between the RH probe and the psychron would have been approximately 15.5%. Capacitive RH elements typically drift upwards at the rate of 1% to 2% each year. The difference between the psychron and the RH probe at the May 19 check was reasonable considering that it had been in use for more than two years. Previous checks (except for at the time of installation, when the two agreed within 1%) have indicated a somewhat larger difference (closer to 5%). The rapid drift of the tower RH probe is likely not a result of this aging process, but a more rapid deterioration that is attributed to an electronic malfunction, as has been seen on a couple of occasions in SMOS RH probes. At 1407 GMT on September 19 the tower carriages were lowered and checks and calibrations of the RH probe and PRTD were made. The RH probe was checked (as indicated above) and removed (S/N 231). A replacement probe (S/N 109) was installed and checked. The new probe indicated the same RH as the HMI31 and just less than 2% less than the psychron did. The tower carriages were returned to their proper positions at 1715 GMT. Comparison of the 60 meter RH (89%) and the surface RH (81% from the psychron) at that time was reasonable for the temperature difference of almost 2 degrees C. Tower vapor pressure (the correct temperature sensor calibration had been entered by that time) was 0.06 kPa less than that for the SMOS. This was reasonable for a cloudy, windy day. Correct RH data began after 1715 GMT. All 60 meter tower data is incorrect between 1407 GMT and 1715 GMT on September 19. Furthermore, all vapor pressure data between 1828 and 1845 GMT on September 18 is incorrect as a consequence of working on the 21X datalogger to find the cause of the 60 meter temperature problem. Because the tower temperature has been recording too low and the RH has been indicating too high, tower vapor pressures have not been greatly different than the actual ambient vapor pressure. Examination of the SMOS, tower, and Sonde data indicate that the tower vapor pressure was approximately 0.2 kPa too large in mid-June and 0.7 kPa too large by September 18. Correction of the tower RH record for the period of May 19 through September 18 may be difficult. It may be possible by careful comparison with the Sonde and SMOS records, but this would be time-consuming. Since the vapor pressure information from the tower is apparently within about 0.5 kPa of the correct values for most of the period, I indicated that the data is questionable. Following the information above, one can extrapolate to obtain an estimate of the 60 meter RH. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/14/1995 | 0000 | 09/19/1995 | 1715 |
| Subject: | SGP/TWR21x/C1 - Teperature biased low |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | On June 14 through 17, 1995 the 60 meter temperature sensor output drifted low. On September 18, 1995 at 1828 GMT I observed the temperature to be 18.42 degrees C. At 1838 I discovered that the 100 ohm resistor connected to the CR21X was not making good contact. Once good contact was made, the temperature indicated 27.38 degrees C. The difference of nine degrees is consistent with the difference between the Sonde and tower (for similar temperature conditions) since June 17. The calibration of the sensor for that period is incorrect. It may be possible to determine a correction to the 60 meter temperature for that period from the imformation that I gathered while at the SGP CART Site on September 18 and 19; I will write an addendum to this DQR once I determine if this is possible. Temperature data for 1828 through 1845 GMT on September 18 is incorrect because I was fiddling with the CR21X connections during that period. On September 19 the 60 meter tower carriages were lowered for RH probe checks and replacement and for an ice bath calibration of the PRTD. All temperature data between 1407 GMT and 1715 GMT is incorrect for September 19 as a consequence of the carriages being down. An ambient air check of the PRTD indicated 22.7 degrees, with the HMI31 indicating 21.4 and the psychron (an ANL instrument that indicates dry and wet bulb temperatures within 0.1 degrees when both are dry) 21.6 degrees. The greater PRTD temperature was expected as the calibration ratio determined for the ice bath during the last calibration (May 19, 1995) was larger than expected. Apparently, poor contact of the 100 ohm resistor began at that point, although it worsened, probably from tower wind vibration, in mid June. The evidence at the time of the May 19 calibration seemed to be that the ratio was appropriate. I performed an ice bath check and ambient comparisons versus the HMI31 and psychron with the help of Chris Martin of site operations. As a result, the multiplier used in the CR21X was changed from 1.0141 to 1.0039. The latter is much more like previous correct determinations of 1.0053, 1.005, and 1.0032 (not in chronological order). Ambient checks with the carriage down then indicated 22.3 degrees for the PRTD, 22.4 for the psychron, and 22.0 for the HMI31. Correct Temperature, Relative Humidity, and Vapor Pressure data began after 1715 GMT on September 19, after the carriages returned to their proper positions. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 09/27/1995 | 1630 | 09/27/1995 | 1700 |
| Subject: | SGP/SMOS/E11 - System down for SIROS maintenance |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | All SMOS E11 data taken during this period are incorrect due to the tower being down for SIROS maintenance. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/10/1995 | 2030 | 10/10/1995 | 2100 |
| Subject: | SGP/SMOS/E15 - Incorrect data |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | Temperature, Humidity, Pressure, and Snow Depth data incorrect.
Cause unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/31/1995 | 1730 | 10/31/1995 | 1800 |
| Subject: | SGP/SMOS/E11 - Humidity sensor failed |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | RH Sensor failed. Replaced on 31 OCT 95. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/14/1995 | 1440 | 11/14/1995 | 1445 |
| Subject: | SGP/TWR21x/C1 - RH Offset removed |
| DataStreams: | sgp1twr21xC1.a0, sgp30twr21xC1.a1 |
| Description: | Since installation in September, the RH probe at the 60 meter level of the tower at the Central Facility has indicated more than 1% high for saturated conditions. Therefore, the 1% offset in the datalogger program was removed. The offset was included to make up for typical line voltage losses. Those losses may be present, but the offset of the RH probe itself more than makes up for them (the probe specifications would allow it to have a potential +/- 3% offset). The offset was removed on November 14, 1995 between 1440 and 1445 GMT, with no loss or corruption of data. The corrected offset should bring the RH at saturated conditions to within 1% of 100% and will result in more accurate measurements throughout the measurement range. Vapor pressure is correspondingly reduced slightly. |
| Measurements: | sgp1twr21xC1.a0:
sgp30twr21xC1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 09/12/1995 | 0000 | 12/12/1995 | 2000 |
| Subject: | SGP/SMOS/E11 - Questionable humidity data from SMOS E11 |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1 |
| Description: | All SMOS E11 humidity data taken during this period are questionable. Maximums exceeding 104% RH were reported. The sensor was replaced on 12 DEC 95 at 2000 GMT. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.a0:
sgp1440smosE11.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/19/1996 | 0105 | 04/19/1996 | 0300 |
| Subject: | SGP/SMOS/E15 - Bad Data |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | All temperature, humidity, and snow depth data taken during this period
are incorrect. There are no entries in the Site Operations log which
can explain the bad data, therefore, the cause is unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/19/1996 | 2235 | 04/20/1996 | 0100 |
| Subject: | SGP/SMOS/E15 - Bad data |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | All temperature, humidity, and snow depth data taken during this period
are incorrect. There are no entries in the Site Operations log which
can explain the bad data, therefore, the cause is unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/28/1996 | 1135 | 04/28/1996 | 2300 |
| Subject: | SGP/SMOS/E15 - Bad data |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | All temperature and vapor pressure data taken during this period
are incorrect. There are no entries in the Site Operations log which
can explain the bad data, therefore, the cause is unknown. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/05/1996 | 1105 | 05/05/1996 | 1400 |
| Subject: | SGP/SMOS/E15 - T/RH probe cable damaged |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | All temperature and vapor pressure data taken at SMOS E15 on 5 MAY 96
between 1105 and 1400 GMT are incorrect. All other data are OK.
Site Operations personel found the T/RH probe cable damaged and
replaced the probe and cable on 7 MAY 96. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/07/1996 | 1802 | 05/07/1996 | 1900 |
| Subject: | SGP/SMOS/E15 - Down to recheck Wind Monitor and replace T/RH probe |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1 |
| Description: | SMOS E15 was down on 7 MAY 96 between 1802 and 1900 GMT to
recheck the Wind Monitor and replace the T/RH probe. All data
taken during this period except rainfall and barometric pressure
are incorrect. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/17/1996 | 0000 | 08/15/1996 | 1630 |
| Subject: | SGP/SMOS/E15 - Questionable or incorrect RH data |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1, sgp1440smosE13.a0 |
| Description: | The values of humidity data taken by SMOS E15 started to drift downwards
starting on approximately 17 MAY 96 and continued to drift downwards
until the probe was replace on 15 AUG 96 at 1630 GMT. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE13.a0:
sgp1smosE15.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/11/1998 | 1115 | 02/11/1998 | 1830 |
| Subject: | SGP/SMOS/E15 - Incorrect humidity data from E15 SMOS |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| Description: | For unknown reasons, the RH probe on the SMOS E15 failed and reported zero relative humidities between approximately 1115 and 1830 GMT on 11 FEB 98. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/24/1998 | 0120 | 02/24/1998 | 1610 |
| Subject: | SGP/SMOS/E15 - RH probe failure and replacement at E15 |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| Description: | The SMOS RH probe at E15 failed again and reported zero RH's at approximately 0120 GMT on 24 FEB 98. The probe was replaced the same day at approximately 1610 GMT. |
| Measurements: | sgp30smosE15.a1:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/11/1998 | 1400 | 05/11/1998 | 2300 |
| Subject: | SGP/SMOS/E15 - SMOS temperature anomaly on 11 MAY 1998 |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| 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: | sgp30smosE15.a1:
sgpsmosE15.01:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/01/1998 | 1300 | 06/02/1998 | 1930 |
| Subject: | SGP/SMOS/E15 - Incorrect SMOS temperatures at E15 |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| 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: | sgp30smosE15.a1:
sgpsmosE15.01:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/16/1998 | 1400 | 06/16/1998 | 1430 |
| Subject: | SGP/SMOS/E15 - Incorrect data during E15 SMOS repair |
| DataStreams: | sgp1smosE15.a0, sgp30smosE15.a1, sgp1smosE15.00 |
| Description: | Temperature and humidity data are incorrect or missing due to a repair on the E15 SMOS on 16 JUN 98 between 1400 and 1430 GMT. |
| Measurements: | sgp30smosE15.a1:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/11/1999 | 2030 | 05/19/1999 | 1930 |
| Subject: | SGP/SMOS/E11 - E11 SMOS down for tower replacement |
| DataStreams: | sgp1440smosE11.a0, sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| Description: | The E11 SMOS was shut down from 11 MAY 1999 at 2030 GMT until 19 MAY 1999 at 1930 GMT while the tower was replaced. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.00:
sgp1smosE11.a0:
sgp1440smosE11.a0:
sgpsmosE11.01:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/11/1999 | 1400 | 05/18/1999 | 1940 |
| Subject: | SGP/SMOS/E15 - E15 SMOS down for tower replacement |
| DataStreams: | sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00, sgp1440smosE15.a0, sgp1smosE15.a0 |
| Description: | The E15 SMOS was shut down from 11 MAY 1999 at 1400 GMT until 18 MAY 1999 at 1940 GMT while the tower was replaced. |
| Measurements: | sgp30smosE15.a1:
sgpsmosE15.01:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/05/1999 | 0915 | 10/05/1999 | 0932 |
| Subject: | SGP/SMOS/E15 - E15 SMOS lowered to surface to install counterweights |
| DataStreams: | sgp1440smosE15.a0, sgp1smosE15.a0, sgp30smosE15.a1, sgpsmosE15.01, sgp1smosE15.00 |
| Description: | The E15 SMOS was lowered to the surface on 5 OCT 1999 between 0915 and 0932 GMT while counterweights were installed. All temperature and humidity data are questionable during this period. |
| Measurements: | sgp30smosE15.a1:
sgpsmosE15.01:
sgp1440smosE15.a0:
sgp1smosE15.a0:
sgp1smosE15.00:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/05/1999 | 1005 | 10/05/1999 | 1035 |
| Subject: | SGP/SMOS/E11 - E11 SMOS lowered to surface to install counterweights |
| DataStreams: | sgp1smosE11.a0, sgp30smosE11.a1, sgpsmosE11.01, sgp1smosE11.00 |
| Description: | The E11 SMOS was lowered to the surface on 5 OCT 1999 between 1005 and 1035 GMT while counterweights were installed. All temperature and humidity data are questionable during this period. |
| Measurements: | sgp30smosE11.a1:
sgp1smosE11.00:
sgp1smosE11.a0:
sgpsmosE11.01:
|