Global Parallel Experiment Change Log
Experiment Name: T170 L42 MRF Forecast
| When | Who | What |
|---|---|---|
| 2000/01/24/12 | Iredell | T170L42 implemented operationally and parallel turned off. |
| 2000/01/04/12 | Pan | The maximum snow depth over sea ice was reset this one time to 1 m. |
| 2000/01/03/12 | Iredell | Y2K impact summary: ERS wind data was missing from 1999/12/31/18 to 2000/01/03/06; aircraft report counts were low from 2000/01/01/00 to 2000/01/01/18; SSM/I wind data missing from one orbit on 2000/01/01/00; otherwise Y2K had very little impact. |
| 1999/12/28/00 | Treadon | Communications bugs fixed in SSI. This fix should eliminate the intermittent aborts. This fix became operational in an emergency implementation in time for the FNL at 1999/12/29/12. |
| 1999/12/01/06 | Treadon | SSI satellite radiance diagnostic file now outputted. |
| 1999/11/01/12 | Iredell | Parallel was intermittently missing SSM/I data since move from Bowie. The problem is now corrected. |
| 1999/10/24/18 | Iredell | Parallel restarted after computer comes back up in Bowie. |
| 1999/10/01/00 | Iredell | Parallel discontinued while computer moves to Bowie. |
| 1999/09/12/06 | Iredell | This analysis cycle had a virtually zero observation count due to network problems. |
| 1999/09/12/00 | Iredell | This analysis cycle had a low observation count due to network problems. |
| 1999/09/02/12 | Keyser | The aircraft quality control program is corrected. Previously, all conventional aircraft other than those with SDM keep flags were inadvertently rejected. Now the conventional aircraft are used with the proper quality control marks. ACARS reports were not affected. |
| 1999/09/02/06 | Iredell | Back to 106 nodes again. |
| 1999/09/01/18 | Iredell | Back to 107 nodes again. |
| 1999/08/22/12 | Iredell | SSI now runs in about 25 minutes on 106 dedicated nodes. No change in the solution. |
| 1999/08/19/06 | Iredell | SSI now runs in about 25 minutes on 107 dedicated nodes. No change in the solution. |
| 1999/08/12/12 | Iredell | More communication bugs fixed in the analysis, perhaps including the "last bug". Forecast model corrected to produce exactly 3-hour forecast and to reflect solar radiation over sea ice. The parallel makes its own prepbufr file now. |
| 1999/08/11/00 | Treadon | Many communication bugs corrected in the analysis. Cycle restarted. |
| 1999/07/26/18 | Iredell | Analysis produced garbage. Cycle halted. |
| 1999/07/26/00 | Iredell | Parallel cycle restarted from operational FNL. |
| 1999/07/24/06 | Iredell | Parallel cycle failed due to major IBM SP system problems. |
| 1999/07/23/00 | Iredell | The parallel MRF forecast now initiates from the cycled T170 GDAS. |
| 1999/07/22/00 | Iredell | Begin GDAS cycle with the T170 SSI. The conventional observations in the FNL operational quality controlled "prepbufr" file are used in the analysis. |
| 1999/07/20/00 | Iredell | another fix to the digital filter initialization; one of the time levels went 3 hours too far ahead |
| 1999/07/13/00 | Iredell | digital filter initialization fixed; it was putting humidity into the ozone field |
| 1999/07/12/00 | Iredell | parallel cycle restarted on the first day back from my vacation |
| 1999/07/03/00 | Iredell | parallel cycle failed for some reason on the first day of my vacation |
| 1999/06/30/00 | Iredell | start daily T170 forecasts from T126 initial conditions |
Page Last Modified: January 24, 2000