DQR ID | Subject | Data Streams Affected |
---|---|---|
D040526.3 | SGP/AERI/C1 - Metadata errors | sgpaeriprofC1.c1, sgpqmeaeriprofC1.c1 |
D040527.1 | SGP/AERI/C1 - Time Offset Corrected | sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpgaeriprofC1.c1, sgplblch1aeriC1.c1, sgplblch2aeriC1.c1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaeri01engineerC1.a1 |
D980414.1 | AERI data effected by failing detector cooler | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
D980414.2 | Tumbleweed in AERI Field of View | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
D980414.3 | CO2 Suppression of AERI Spectra | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
D990920.1 | SGP/AERI/C1 - Reprocessed: radiance data | sgpaeri01C1.00, sgplblch1C1.c1, sgplblch2C1.c1, sgpaeriprofC1.c1, sgplblch1lsC1.c1, sgplblch2lsC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilbldifflsC1.c1 |
D991123.1 | SGP/AERI - AERI01 scene mirror motor failure | sgpaeri01C1.00, sgplblch1C1.c1, sgplblch2C1.c1, sgpaeriprofC1.c1, sgplblch1lsC1.c1, sgplblch2lsC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpgaeriprofC1.c1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaeri01engineerC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/14/1996 | 0013 | 05/14/2003 | 2359 |
Subject: | SGP/AERI/C1 - Metadata errors |
DataStreams: | sgpaeriprofC1.c1, sgpqmeaeriprofC1.c1 |
Description: | The latitude, longitude and altitude of the AERI were incorrectly entered into the ARM database. The correct location of the SGP.C1 AERI is: Lat: 36.606N Lon: 97.485W Alt: 316m |
Measurements: | sgpaeriprofC1.c1:
sgpqmeaeriprofC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2001 | 0010 | 10/19/2001 | 1614 |
10/29/2001 | 1622 | 11/20/2001 | 1657 |
Subject: | SGP/AERI/C1 - Time Offset Corrected |
DataStreams: | sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpgaeriprofC1.c1, sgplblch1aeriC1.c1, sgplblch2aeriC1.c1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaeri01engineerC1.a1 |
Description: | The SGP.C1 AERI system clock was not being regularly checked and synched with a time server between May 2001 and November 2001. When the problem was identified and the clock was corrected, a time offset of 17 minutes and 2 seconds (slow) was present. The data available from the ARM Archive have been time corrected by Dave Turner using a piece-wise linear function based on a comparison of pressure data from the AERI and SMOS. Dave indicates "this results in a good fit to the data" and "errors in the reported sample times are reduced to approximately 1 minute or less. Given the nominal three minute averaging period of the AERI, this should suffice for most applications." Data between 20011019.1615-20011029.1621 did not need to be corrected due to a series of events that caused the clock to be temporarily synched and then revert back to the linear drift pattern. Note, there are three other variables in the AERI data products which report time: Time, timeHHMMSS and rawTimeHHMMSS. The data in these variables were not modified, so these data will not agree with basetime + time_offset. Also note, VAPs which use the AERI data as input were NOT reprocessed. VAP data during the time period specified are questionable and should be used with caution. |
Measurements: | sgpaeri01ch1C1.a1:
sgpaeri01engineerC1.a1:
sgpaeriprofC1.c1:
sgpqmeaerimeansC1.c1:
sgpgaeriprofC1.c1:
sgpaerilbldifflsC1.c1:
sgplblch1aeriC1.c1:
sgpaeri01summaryC1.a1:
sgpaerilblcloudsC1.c1:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgplblch2aeriC1.c1:
sgpqmeaerilblC1.c1:
sgpqmeaeriprofC1.c1:
sgpqmeaerilbllsC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/1997 | 0000 | 10/05/1997 | 2330 |
Subject: | AERI data effected by failing detector cooler |
DataStreams: | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
Description: | The AERI mechanical (Stirling Cycle) detector cooler exhibited abnormal behavior during this time period which allowed the detector temperature to fluctuate outside of the normal limits. This cooler had successfully operated for over 21 months at this point, well beyond the expected lifetime before refurbishment. Only the longwave (channel 1) AERI data appears to be effected as the shortwave (channel 2) detector is less sensitive to changes in detector temperature. THE COOLER WAS REPLACED AT 23:00 UTC ON 5 OCTOBER 1997 with a spare by UW personnel who were on site for the WVIOP. |
Measurements: | sgpaeri01ch1C1.a1:
sgpaerich1C1.a2:
sgpaeri01engineerC1.a1:
sgpaerich2C1.a1:
sgpaerich2C1.a2:
sgpaeriprofC1.c1:
sgpaerilbldiffssC1.c1:
sgpaerich1C1.a1:
sgpqmeaerimeansC1.c1:
sgpaerilbldifflsC1.c1:
sgpqmeaerimeansssC1.c1:
sgpaeri01summaryC1.a1:
sgpaerilblcloudsC1.c1:
sgpqmeaerilblssC1.c1:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgpaerisummaryC1.a1:
sgpaerisummaryC1.a2:
sgpqmeaerilblC1.c1:
sgpaeriC1.00:
sgpqmeaeriprofC1.c1:
sgpqmeaerilbllsC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/03/1997 | 1800 | 10/03/1997 | 2200 |
Subject: | Tumbleweed in AERI Field of View |
DataStreams: | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
Description: | It's windy. It's Oklahoma. A tumbleweed somehow manages to fall into the AERI hatch and become lodged in the AERI sky view position. The AERI collects spectra of the tumbleweed until the problem is identified and corrected. In later processing this was shown to effect the AERI temperature retrievals during the period 18:00 - 22:00 UTC. |
Measurements: | sgpaeri01ch1C1.a1:
sgpaerich1C1.a2:
sgpaeri01engineerC1.a1:
sgpaerich2C1.a1:
sgpaerich2C1.a2:
sgpaeriprofC1.c1:
sgpaerilbldiffssC1.c1:
sgpaerich1C1.a1:
sgpqmeaerimeansC1.c1:
sgpaerilbldifflsC1.c1:
sgpqmeaerimeansssC1.c1:
sgpaeri01summaryC1.a1:
sgpaerilblcloudsC1.c1:
sgpqmeaerilblssC1.c1:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgpaerisummaryC1.a1:
sgpaerisummaryC1.a2:
sgpqmeaerilblC1.c1:
sgpaeriC1.00:
sgpqmeaeriprofC1.c1:
sgpqmeaerilbllsC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/1997 | 1600 | 09/30/1997 | 1700 |
Subject: | CO2 Suppression of AERI Spectra |
DataStreams: | sgpaeriC1.00, sgpaerich1C1.a1, sgpaerich1C1.a2, sgpaerich2C1.a1, sgpaerich2C1.a2, sgpaeriprofC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpaerisummaryC1.a1, sgpaerisummaryC1.a2, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerilblssC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilblcloudsC1.c1, sgpaerilbldifflsC1.c1, sgpaerilbldiffssC1.c1, sgpaeri01engineerC1.a1, sgpqmeaerimeansssC1.c1 |
Description: | At about 1600 UTC 30 September 1997 (970930), the CO2 fire suppression system in the optical trailer went off and AERI-01 detected a local cooling due to the colder air being forced out of the trailer. Over the next few minutes, the CO2 accumulated outside the trailer causing lower transmission to space in the 15 micron region and AERI-01 therfore detected warmer temperatures closer to the surface (T profile decreases with altitude). As more CO2 exited the trailer, the atmosphere at 15 microns became more and more opaque and AERI looses nearly all responsivity in this region. AERI gradually regains responsivity over the next 30 minutes or so as the CO2 diffuses. The strongest absorbing on-line regions from ~650-680 wavenumbers are the last to recover around 1700 UTC. A graphical description of the effect described can be found at: http://www.iop.sgp.arm.gov/~davet/970930/aeri01/index.html Besides the enhanced CO2, the instrument is effected by the rapid change of temperature of inside the optical trailer. This makes all the AERI data during the period 970930 16:00 - 17:00 UTC questionable. |
Measurements: | sgpaeri01ch1C1.a1:
sgpaerich1C1.a2:
sgpaeri01engineerC1.a1:
sgpaerich2C1.a1:
sgpaerich2C1.a2:
sgpaeriprofC1.c1:
sgpaerilbldiffssC1.c1:
sgpaerich1C1.a1:
sgpqmeaerimeansC1.c1:
sgpaerilbldifflsC1.c1:
sgpqmeaerimeansssC1.c1:
sgpaeri01summaryC1.a1:
sgpaerilblcloudsC1.c1:
sgpqmeaerilblssC1.c1:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgpaerisummaryC1.a1:
sgpaerisummaryC1.a2:
sgpqmeaerilblC1.c1:
sgpaeriC1.00:
sgpqmeaeriprofC1.c1:
sgpqmeaerilbllsC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/1996 | 0000 | 06/30/1997 | 2359 |
Subject: | SGP/AERI/C1 - Reprocessed: radiance data |
DataStreams: | sgpaeri01C1.00, sgplblch1C1.c1, sgplblch2C1.c1, sgpaeriprofC1.c1, sgplblch1lsC1.c1, sgplblch2lsC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaerilbldifflsC1.c1 |
Description: | Due to a software error in the real-time calibration software, the AERI-01 radiance data between 10/96 and 6/97 were incorrectly calibrated. All of the AERI-01 radiance data collected at the SGP central facility during this time period was corrupted by this software error and were reprocessed to correct the radiance data. The error also affected all derived products of the AERI radiance data. AERI data collected prior to and after this time period was unaffected by this programming error. The proper calibrated radiance spectra was recovered from the raw archived dataset through post-processing. This reprocessing of the AERI data was carried out by the instrument mentor at PNNL and confirmed independently by Univ. of Wisconsin. The reprocessed AERI radiance data during the period 10/96 to 6/97 supercedes all previous versions of the AERI data in all instances. reprocessed, archived 9/99: sgpaeri01C1.00 reprocessed, archived 10/99: sgpaeri01ch1C1.a1 sgpaeri01ch2C1.a1 sgpaeri01engineerC1.a1 sgpaeri01summaryC1.a1 sgpaerilbldiffC1.c1 sgpaerilbldifflsC1.c1 sgplblch1C1.c0 sgplblch1C1.c1 sgplblch1lsC1.c0 sgplblch1lsC1.c1 sgplblch2C1.c0 sgplblch2C1.c1 sgplblch2lsC1.c0 sgplblch2lsC1.c1 sgpqmeaerilblC1.c1 sgpqmeaerilbllsC1.c1 sgpqmeaerimeansC1.c1 reprocessed, archived 11/99: sgpaeriprofC1.c1 sgpqmeaeriprofC1.c1 not reprocessed: sgpaerilblcloudsC1.c1 sgpaerilbldiffssC1.c1 sgpqmeaerilblssC1.c1 sgpqmeaerimeansssC1.c1 |
Measurements: | sgpaeri01ch1C1.a1:
sgplblch2lsC1.c1:
sgpaeriprofC1.c1:
sgpqmeaerimeansC1.c1:
sgplblch1lsC1.c1:
sgpaerilbldifflsC1.c1:
sgpaeri01summaryC1.a1:
sgpaeri01C1.00:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgplblch2C1.c1:
sgpqmeaerilblC1.c1:
sgplblch1C1.c1:
sgpqmeaerilbllsC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/19/1999 | 1930 | 11/22/1999 | 1750 |
Subject: | SGP/AERI - AERI01 scene mirror motor failure |
DataStreams: | sgpaeri01C1.00, sgplblch1C1.c1, sgplblch2C1.c1, sgpaeriprofC1.c1, sgplblch1lsC1.c1, sgplblch2lsC1.c1, sgpaeri01ch1C1.a1, sgpaeri01ch2C1.a1, sgpgaeriprofC1.c1, sgpqmeaerilblC1.c1, sgpaerilbldiffC1.c1, sgpqmeaeriprofC1.c1, sgpqmeaerilbllsC1.c1, sgpqmeaerimeansC1.c1, sgpaeri01summaryC1.a1, sgpaeri01engineerC1.a1 |
Description: | During this time interval, the AERI scene mirror motor control was not operating, resulting in a complete loss of spectral radiance data including any associated brightness temperatures. This data should not be used. |
Measurements: | sgplblch2lsC1.c1:
sgpaeri01ch1C1.a1:
sgpaeri01engineerC1.a1:
sgpaeriprofC1.c1:
sgpqmeaerimeansC1.c1:
sgplblch1lsC1.c1:
sgpgaeriprofC1.c1:
sgpaeri01summaryC1.a1:
sgpaeri01C1.00:
sgpaeri01ch2C1.a1:
sgpaerilbldiffC1.c1:
sgplblch2C1.c1:
sgpqmeaerilblC1.c1:
sgplblch1C1.c1:
sgpqmeaeriprofC1.c1:
sgpqmeaerilbllsC1.c1:
|