DQR ID | Subject | Data Streams Affected |
---|---|---|
D030630.3 | SGP/RUC/X1 - 00z and 12z files missing raob data | sgpallruc20hybrX1.c1, sgpallruc20isobX1.c1, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1, sgpallruc20hybrX1.00, sgpallruc20isobX1.00 |
D050218.2 | SGP/RUC/X1 - Data incomplete during RUC 40 to RUC 20 transition | sgpallruc20hybrX1.00, sgpallruc20isobX1.00, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1 |
D050224.2 | SGP/RUC/X1 - Wrong analysis code | sgpallruc20hybrX1.00, sgpallruc20hybrX1.c1, sgpallruc20isobX1.00, sgpallruc20isobX1.c1, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1 |
D110920.1 | TWP/CSPHOT/C1 - Missing Data | twpcsphotalmC1.a1, twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotppC1.a1 |
D120507.3 | TWP/CSPHOT/C1 - Filter degradation | twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotalmC1.a1, twpcsphotppC1.a1 |
D130716.1 | TWP/CSPHOT/C1 - Obstruction in collimator tubes | twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotppC1.a1, twpcsphotalmC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2002 | 1200 | 02/04/2003 | 2359 |
Subject: | SGP/RUC/X1 - 00z and 12z files missing raob data |
DataStreams: | sgpallruc20hybrX1.c1, sgpallruc20isobX1.c1, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1, sgpallruc20hybrX1.00, sgpallruc20isobX1.00 |
Description: | The RUC 20 analyses files for hours 00z and 12z may be missing raob data between 04/18/2002-02/04/2003. This affects datastreams sgpallruc20isobX1.00, sgpallruc20isobX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1. sgpallruc20hybrX1.00, sgpallruc20hybrX1.c1, and sgpruc20hybrX1.c1. The situation was that we were picking up all data from the ruc2a directory from NCEP's ftp server. Apparently, the 00z and 12z files in this directory are "early look" "A" analysis files which miss most of the raob data. Starting on 2/5/03, we started to pick up the 00z and 12z files from the second "B" analysis from the ruc2b directory. Only data for hours 00z and 12z are affected. Below are exerpts from Stan Benjamin of FSL regarding this problem and how it affects the data. Stan Benjamin in reply to a question on how the data is affected: Feb 19 15:16:11 2003 " ... In your second question, the fields from the A analyses will not be drastically in error. The quality for the near-surface grids would be about equal to that of the B analysis. The wind conditions aloft would be slightly degraded but not much. The fields with the most degradation would be the details of the vertical profiles of humidity and, to a lesser extent, temperature..." General message from Stan Benjamin (Feb 3, 2003): "... Basically, the problem is that unless you've taken special precautions in your ftp scripts, you've been accessing RUC analyses at 0000 and 1200 UTC that do not assimilate most of the raob data. Let me explain: There are 2 RUC analyses in the operational NCEP version at 00z and 12z only. The first is an "early look" analysis, called the "A" analysis that misses most of the raob data (although it does have most of the other obs in it - profiler, aircraft, sfc, etc.). The 00z and 12z RUC forecasts do NOT run off the "A" analysis. Instead, a second analysis called the "B" analysis with a later (30 min) data cut-off to catch raob data is run, and then the forecast is run. At the NCEP ftp site, the ruc2a directories contain the "A" analyses and forecasts initialized from the "B" analysis. Yes, a little confusing. To obtain the "B" analyses, you must go to the corresponding ruc2b directory. In other words, you must access two different directories to obtain the best RUC analysis and forecast (from the B run) at 0000 and 1200 UTC. Again, there is no B run at times other than 0000 and 1200 UTC. The information on the RUC web site about ftp'ing from the NCEP-ftp site was NOT correct about this issue until this afternoon. It is now corrected (see http://ruc.fsl.noaa.gov/ruc20.data-access.html). ..." |
Measurements: | sgpsynruc20isobX1.c1:
sgpallruc20isobX1.c1:
sgpallruc20isobX1.00:
sgpruc20hybrX1.c1:
sgpruc20isobX1.c1:
sgpallruc20hybrX1.00:
sgpallruc20hybrX1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2002 | 0000 | 04/22/2002 | 2359 |
Subject: | SGP/RUC/X1 - Data incomplete during RUC 40 to RUC 20 transition |
DataStreams: | sgpallruc20hybrX1.00, sgpallruc20isobX1.00, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1 |
Description: | On 2002-04-17, NCEP converted their RUC products from 40km to 20km resolution. For several days following this transition, data are incomplete. Any data missing from the tar bundles are irretrievable. |
Measurements: | sgpsynruc20isobX1.c1:
sgpallruc20isobX1.00:
sgpruc20hybrX1.c1:
sgpruc20isobX1.c1:
sgpallruc20hybrX1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2005 | 0000 | 02/03/2005 | 1900 |
Subject: | SGP/RUC/X1 - Wrong analysis code |
DataStreams: | sgpallruc20hybrX1.00, sgpallruc20hybrX1.c1, sgpallruc20isobX1.00, sgpallruc20isobX1.c1, sgpruc20hybrX1.c1, sgpruc20isobX1.c1, sgpsynruc20isobX1.c1 |
Description: | NCEP Central Operations moved the suite of operational models to a new supercomputer on 2005-01-25. Unfortunately, the code they used to build the executables for this new machine did not contain the changes made to the RUC analysis code on 2004-09-29. (See the posts on the RUC forum: http://ruc.fsl.noaa.gov/forum/f2/Welcome.cgi/read/1288 made around 2004-09-28 for more information.) The result was some odd temperature and dew point analyses (and resultant forecasts) during this period and some general dryness. The error was found 2005-02-02, and the newest version of the code was introduced back into the model in the afternoon. Unfortunately, due to cycling, some of the errors remained, so a new first guess (from a version of the model containing the updated code) was brought in for the 19Z cycle on February 3rd. |
Measurements: | sgpsynruc20isobX1.c1:
sgpallruc20isobX1.c1:
sgpallruc20isobX1.00:
sgpruc20hybrX1.c1:
sgpruc20isobX1.c1:
sgpallruc20hybrX1.00:
sgpallruc20hybrX1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/2011 | 0000 | 06/13/2011 | 2359 |
07/08/2011 | 0000 | 07/16/2011 | 2359 |
05/13/2012 | 0000 | 07/28/2012 | 2359 |
08/01/2012 | 0000 | 08/19/2012 | 2359 |
09/05/2012 | 0000 | 09/21/2012 | 2359 |
12/22/2012 | 0000 | 01/01/2013 | 2359 |
01/23/2013 | 0000 | 02/13/2013 | 2359 |
03/10/2013 | 0000 | 04/09/2013 | 2359 |
Subject: | TWP/CSPHOT/C1 - Missing Data |
DataStreams: | twpcsphotalmC1.a1, twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotppC1.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | twpcsphotaotC1.a1:
twpcsphotalmC1.a1:
twpcsphotaotfiltC1.a1:
twpcsphotppC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/23/2011 | 0000 | 05/06/2012 | 2359 |
Subject: | TWP/CSPHOT/C1 - Filter degradation |
DataStreams: | twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotalmC1.a1, twpcsphotppC1.a1 |
Description: | Channels 340,380 and 1640 are in disagreement with the other channels, possibly due to degradation of filters or a problem with the InGaAs detector. There were also "InGaAs/Silicon Discrepancy" errors reported during this time. |
Measurements: | twpcsphotaotC1.a1:
twpcsphotalmC1.a1:
twpcsphotaotfiltC1.a1:
twpcsphotppC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/21/2013 | 0000 | 07/13/2013 | 2359 |
Subject: | TWP/CSPHOT/C1 - Obstruction in collimator tubes |
DataStreams: | twpcsphotaotC1.a1, twpcsphotaotfiltC1.a1, twpcsphotppC1.a1, twpcsphotalmC1.a1 |
Description: | During this time period, data were suspect due to obstructions in the collimator tubes. The instrument was also due for calibration. |
Measurements: | twpcsphotaotC1.a1:
twpcsphotalmC1.a1:
twpcsphotaotfiltC1.a1:
twpcsphotppC1.a1:
|