NOAA KLM User's GuideAppendix G.6 |
April 27, 1999
ATOVS operational.
May 4, 1999
Update coefficients.
May 11, 1999
Update coefficients.
May 12, 1999
May 17, 1999
Update coefficients.
May 24, 1999
Update coefficients.
June 2, 1999
Update coefficients.
June 8, 1999
Update coefficients.
June 9, 1999
The ATOVS GTS (SATEM) formatter was modified to check for zero thickness values and filter retrievals containing those values from distribution.
June 24, 1999
Implemented new OPCUPD to:
June 24, 1999
The GTS formatter(SATEM) was modified to perform quality control and then sub sample. The tasks were being done in reverse, which at
times led to a reduced sample size. This will ensure that all retrievals selected for distribution are of acceptable quality.
June 29, 1999
Implemented new SPGDVR to remove AMSU-A channel 6 from the CDB for high terrain retrieval channel combination. This will only affect
high terrain areas like Antarctica and the Himalayas.
July 6, 1999
Update Coefficients.
July 13, 1999
Update Coefficients.
July 15, 1999
Implemented new SPGDVR to call new RETOD2 which uses correct measurement for precipitable water.
July 19, 1999
Update Coefficients.
July 22, 1999
A new Unified Radiosonde system was implemented.
July 26, 1999
Update Coefficients.
July 30, 1999
Corrected scaling factors on the Retrieval Operational Data File (RODF) which is the primary output file from SPGDVR and primary
input file to all product formatters and the retrieval archive. A total of 20 scaling factors were incorrect.
| Parameter | Old Scaling | New (Correct) Scaling |
|---|---|---|
| Retrieved Surface Pressure | 1 | 64 |
| First Guess Water Vapor Mixing Ratio (First word) | 64 | 1024 |
| First Guess radiance Temp.(First word) | 1024 | 64 |
| Forecast Relative Humidity | 64 | 256 |
| Forecast surface pressure | 256 | 10 |
| Forecast Pressure | 64 | 10 |
| Potential Temp. time minus Forecast time | 10 | 100 |
| Stability Departure | 10 | 512 |
| Lower Departure | 100 | 512 |
| Time difference (satellite minus forecast) | 512 | 1 |
| Stability forecast increment | 512 | 1 |
| Total Precipitable water (300-500mb) | 100 | 128 |
| Total Precipitable water (500-700mb) | 1 | 128 |
| Sulfur Dioxide | 128 | 1 |
| Polar Redundancy Flag | 128 | 1 |
| Outgoing long wave radiation | 1 | 10 |
| Layer Cooling rate (240-10mb) | 1 | 1000 |
| Layer cooling rate(500-240mb) | 10 | 1000 |
| Cloud comparison flag | 1000 | 1 |
| Library search closeness | 1000 | 1 |
August 4, 1999
Corrected I1I2I3I4 term for the SATEM to have I3 (Instrument Combination Flag)
set to 1 when clear and 3 when cloudy and I4 (Data Processing Technique) set to 3 when cloudy and 4 when clear.
August 9, 1999
Update Coefficients.
August 10, 1999
On August 9, 1999, two NOAA-15 orbits 064344 and 64445 were lost due to antenna problems at Gilmore Creek.
August 17, 1999
Update Coefficients.
August 23, 1999
Update Coefficients.
August 30, 1999
Update Coefficients.
September 1, 1999
Orbit 676364 failed processing.
September 2, 1999
The precipitable water content had been incorrectly distributed in the SATEM as distinct layers when it should have been summation.
This was corrected. Additionally, cases were found where the terrain was sea but the sea surface temperature was zero, these
situations were eliminated in the SATEM. The problem is the terrain flag comes from the SSM/I processing and the Sea Surface
Temperature is from another system with (obviously) a different terrain field.
September 7, 1999
Update coefficients.
September 13, 1999
Update coefficients.
September 20, 1999
Update coefficients.
September 22, 1999
Corrected the "No HIRS" designation to not be flagged when the HIRS really is present. Also changed the initialization of some
variables to be properly done.
October 4, 1999
Update coefficients.
October 4 to 6, 1999
Problems with orbital processing resulted in the replacement of the first guess library, CDB and OPCDB at 1545L on October 6.
October 7, 1999
Archive changed to report '0' SST as missing instead of '0', see September 2, 1999 entry for explanation of '0' SST.
October 12, 1999
Update coefficients.
October 13, 1999
Copied clear and cloud Matchup data bases from parallel tooperations, changed CDB after orbit 736768 (data time 1650 to
1835Z).
October 19, 1999
Update coefficients.
October 25, 1999
Update coefficients.
November 2, 1999
Change CDB radiosonde match time windows for the latitude bins to reduce the number of matchups in selected bins. (New time windows by
bin 3,6,6,6,4,6,6,4,3,2,3,3,3,3,3,2,2,3,3,3, 3,3,2).
November 4, 1999
Update coefficients.
November 10, 1999
Update coefficients.
November 15, 1999 10:35L
Modified thresholds in CDB.
Novmeber 17, 1999
Update coefficients.
November 17, 1999
Allocate archive with logical record length of 1000 and block size of 9000.
November 18, 1999
Modified thresholds in CDB.
November 23, 1999
Update coefficients.
November 24, 1999 11:54L
Modified thresholds in CDB.
December 1, 1999
Update coefficients.
December 2, 1999
Update thresholds in CDB.
December 6, 1999
Update coefficients.
December 14, 1999
Update coefficients.
December 21, 1999
Update coefficients.
December 21, 1999
Spike in HIRS filter wheel motor current in orbit 832122 (1841 -2027Z). Did not appear to impact data.
December 28, 1999
Update coefficients.
January 5, 2000
Update coefficients.
January 12, 2000
Update coefficients.
January 12, 2000 10:47L
Change window channel test threshold.
January 19, 2000
Update coefficients.
January 27, 2000
Update coefficients.
February 1, 2000
Implemented significant upgrade:February 8, 2000
Update coefficients.
February 24, 2000
Update coefficients.
February 25, 2000
Copied clear and cloudy matchup data bases from the production parallel system to the operational system.
March 7, 2000
Update coefficients.
March 14, 2000
Update coefficients.
March 16, 2000
Changed CDB thresholds at 11:20 am.
March 20, 2000
Update coefficients.
March 28, 2000
Update coefficients.
April 5, 2000
Update coefficients.
April 11, 2000
Update coefficients.
April 18, 2000
Update coefficients.
April 25, 2000
Update coefficients.
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