DQR ID | Subject | Data Streams Affected |
---|---|---|
D010726.31 | SGP/SMOS/E20 - E20 SMOS 30 MINUTE DATA VALUES MISSING | sgp30smosE20.a1 |
D010726.33 | SGP/SMOS/E20 - E20 SMOS ALL DATA STREAMS MISSING | sgp1smosE20.a0, sgp30smosE20.a1 |
D020404.7 | SGP/SMOS/E20 - E20 SMOS SNOW DATA INCORRECT | sgp30smosE20.a1, sgp1440smosE20.a0 |
D020620.45 | SGP/SMOS/E20 - Tower lowered for work on instrumentation | sgp1smosE20.a0, sgp30smosE20.a1 |
D020620.60 | SGP/SMOS/E20 - E20 SMOS lowered to surface to install counterweights | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
D040318.18 | SGP/SMOS/E20 - 6-month Calibration Checks | sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
D940812.2 | SGP/SMOS/E20 - Reprocess: Wind speed calibrations | sgp1smosE20.a0, sgp30smosE20.a1 |
D941109.1 | SGP/SMOS/E20 - Tower lowered for work on instrumentation | sgp1smosE20.a0, sgp30smosE20.a1 |
D950509.5 | SGP/SMOS/E20 - Data questionable/missing due to low battery voltage | sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
D951101.8 | SGP/SMOS/E20 - Sensor replacement | sgp1smosE20.a0, sgp30smosE20.a1 |
D960911.4 | SGP/SMOS/E20 - Bad humidity data | sgp1smosE20.a0, sgp30smosE20.a1 |
D961210.17 | SGP/SMOS/E20 - Incorrect data | sgp1smosE20.a0, sgp30smosE20.a1 |
D991109.13 | SGP/SMOS/E20 - E20 SMOS down for tower replacement | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
D991109.18 | SGP/SMOS/E20 - E20 SMOS lowered to surface to install counterweights | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2001 | 1400 | 03/03/2001 | 2331 |
Subject: | SGP/SMOS/E20 - E20 SMOS 30 MINUTE DATA VALUES MISSING |
DataStreams: | sgp30smosE20.a1 |
Description: | 30 minute data values missing. Reason unknown. |
Measurements: | sgp30smosE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/2001 | 1411 | 03/07/2001 | 0001 |
Subject: | SGP/SMOS/E20 - E20 SMOS ALL DATA STREAMS MISSING |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | All data streams missing. Reason unknown |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/1996 | 0000 | 03/31/2001 | 2359 |
Subject: | SGP/SMOS/E20 - E20 SMOS SNOW DATA INCORRECT |
DataStreams: | sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | Due to a programming error all snow depth data were reported as 0. In effect, no snow depth data were collected. |
Measurements: | sgp30smosE20.a1:
sgp1440smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/1995 | 1700 | 11/03/1995 | 1830 |
Subject: | SGP/SMOS/E20 - Tower lowered for work on instrumentation |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | Due to tower being lowered to work on instrumentation between 1700 and 1830 GMT on 03 NOV 94, all wind data are incorrect. |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1999 | 1003 | 10/13/1999 | 1015 |
Subject: | SGP/SMOS/E20 - E20 SMOS lowered to surface to install counterweights |
DataStreams: | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | The E20 SMOS was lowered to the surface on 13 OCT 1999 between 1003 and 1015 GMT while counterweights were installed. All wind speed and direction are incorrect during this period. |
Measurements: | sgpsmosE20.01:
sgp30smosE20.a1:
sgp1440smosE20.a0:
sgp1smosE20.00:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/09/1994 | 1624 | 06/09/1994 | 1824 |
11/25/1994 | 1622 | 11/25/1994 | 1822 |
04/27/1995 | 1437 | 04/27/1995 | 1637 |
10/13/1995 | 1300 | 10/13/1995 | 1520 |
04/10/1996 | 1629 | 04/10/1996 | 1900 |
10/23/1996 | 1705 | 10/23/1996 | 1905 |
04/09/1997 | 1850 | 04/09/1997 | 2300 |
05/21/1997 | 1420 | 05/21/1997 | 1620 |
10/22/1997 | 1255 | 10/22/1997 | 1455 |
05/20/1998 | 1300 | 05/20/1998 | 1900 |
11/20/1998 | 1739 | 11/20/1998 | 1939 |
03/24/1999 | 1409 | 03/24/1999 | 1609 |
04/07/1999 | 1515 | 04/07/1999 | 1620 |
12/15/1999 | 2011 | 12/15/1999 | 2045 |
05/17/2000 | 1855 | 05/17/2000 | 1940 |
10/04/2000 | 1922 | 10/04/2000 | 2000 |
Subject: | SGP/SMOS/E20 - 6-month Calibration Checks |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | During the time periods specified, the SMOS.E20 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: | sgp30smosE20.a1:
sgp1440smosE20.a0:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/08/1993 | 1431 | 08/19/1993 | 1430 |
Subject: | SGP/SMOS/E20 - Reprocess: Wind speed calibrations |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | EDITOR'S NOTE: The earliest portion of the time period 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 930403-930819.1430. 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: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/1995 | 1700 | 11/03/1995 | 1830 |
Subject: | SGP/SMOS/E20 - Tower lowered for work on instrumentation |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | Due to tower being lowered to work on instrumentation between 1700 and 1830 GMT on 03 NOV 94, all temperature and humidity data are questionable. |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/1995 | 1330 | 03/30/1995 | 1700 |
Subject: | SGP/SMOS/E20 - Data questionable/missing due to low battery voltage |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | All data questionable or missing due to low battery voltage. Battery not changed due to a loss of AC power. |
Measurements: | sgp30smosE20.a1:
sgp1440smosE20.a0:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/1995 | 1532 | 10/26/1995 | 1600 |
Subject: | SGP/SMOS/E20 - Sensor replacement |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | Temperature and Humidity data incorrect or missing during sensor replacement. |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/03/1996 | 2230 | 08/15/1996 | 1700 |
Subject: | SGP/SMOS/E20 - Bad humidity data |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | The Relative Humidity sensor failed. It appears to have operated intermittantly for the first few days of this period and then failed entirely. The temperature portion of the probe appears to be unaffected. The probe was replaced on 20 JUN 96. The replacement probe reported unusually low values of relative humidity. The probe was replaced again on 15 AUG 96 at 1700 GMT. |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/1996 | 1701 | 11/08/1996 | 1730 |
Subject: | SGP/SMOS/E20 - Incorrect data |
DataStreams: | sgp1smosE20.a0, sgp30smosE20.a1 |
Description: | The data for SMOS at E20 was all 9's or 0's for 1730 GMT on 8 NOV 96 for an unknown reason. |
Measurements: | sgp30smosE20.a1:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/1999 | 1540 | 05/06/1999 | 1945 |
Subject: | SGP/SMOS/E20 - E20 SMOS down for tower replacement |
DataStreams: | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | The E20 SMOS was shut down from 22 APR 1999 at 1540 GMT until 6 MAY 1999 at 1945 GMT while the tower was replaced. |
Measurements: | sgpsmosE20.01:
sgp30smosE20.a1:
sgp1440smosE20.a0:
sgp1smosE20.00:
sgp1smosE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1999 | 1003 | 10/13/1999 | 1015 |
Subject: | SGP/SMOS/E20 - E20 SMOS lowered to surface to install counterweights |
DataStreams: | sgpsmosE20.01, sgp1smosE20.00, sgp1smosE20.a0, sgp30smosE20.a1, sgp1440smosE20.a0 |
Description: | The E20 SMOS was lowered to the surface on 13 OCT 1999 between 1003 and 1015 GMT while counterweights were installed. All temperature and humidity data are questionable during this period. |
Measurements: | sgpsmosE20.01:
sgp30smosE20.a1:
sgp1440smosE20.a0:
sgp1smosE20.00:
sgp1smosE20.a0:
|