Global Parallel Experiment Change Log
Experiment Name: Scheduled June 2000 Implementation
| When | Who | What |
|---|---|---|
| 2000/06/01/06 | Iredell | Parallel discontinued. |
| 2000/05/15/06 | Wu | Use NOAA-11 SBUV for ozone as well as NOAA-14. Upper-air guess copied from operations. |
| 2000/05/12/06 | Treadon | Previous fix of ozone analysis problem is insufficient. Remove SST predictor. |
| 2000/05/11/12 | Treadon | Ozone analysis problem is discovered over Antarctica where there is no SBUV data. Total ozone is going too low. Add height adjustment to SST predictor. |
| 2000/05/05/00 | Iredell | Corrected bug in MRFX forecast that reverted snow and sea ice back to climatology after 24 hours. The GDAS was not affected. |
| 2000/05/04/06 | Pan | Corrected bug in the deep convection that had prevented the deepest cloud from being formed. This fix may improve Brazilian precipitation. |
| 2000/05/01/06 | Iredell,Moorthi,Hou, Saha,Kistler,Liu |
Isolated points are removed in the reduced grid land-sea mask. Reduced grid stand-alone surface cycling used. New albedo climatology used. Aerosols included over land in shortwave radiation. Tropical storm relocation is activated. |
| 2000/04/12/12 | Iredell | New reduced grid terrain files used. The GDAS guess forecast also uses the reduced grid. The MRF now runs with daily surface cycling with the SST anomaly efolded away on a 90-day time scale. |
| 2000/04/10/18 | Iredell | New surface file version 200004. The MRF now runs with a reduced grid. |
| 2000/04/06/00 | Pan | A correction was made to the new convection scheme. The entrainment in a cloud parcel is now limited to a doubling of the original size. |
| 2000/03/30/00 | Iredell | Reduced grid still not correct; parallel reverted back to full grid. |
| 2000/03/29/12 | Iredell | Parallel resurrected. Problem in analysis bias correction coefficients is corrected. Problem in gravity wave drag is stabilized. Orographic and physics forcings are spectrally filtered. MRF forecast is now done on a reduced grid. |
| 2000/03/26/18 | Iredell | Parallel died. People are working on the problem. |
| 2000/03/24/12 | Treadon | There's still a problem in the analysis code. Added bandaid to enable analysis to converge until better solution can be found. |
| 2000/03/24/12 | Yang | Found and corrected error in observation distribution. Two major analysis fixes in one day! |
| 2000/03/24/12 | Derber | Found error in bias correction cycling. Error has been fixed and parallel is recopied from operations and restarted (on a Friday afternoon, of course). |
| 2000/03/23/00 | Treadon | Undid some of yesterday's fix that wasn't working right. |
| 2000/03/22/12 | Treadon | Fixed analysis bug in using observations near the poles. |
| 2000/03/21/00 | Iredell | Changed to new terrain and installed improvements to gravity wave drag and deep convection. Postponed implementation of reduced grid. |
| 2000/03/17/00 | Treadon | Corrected observation distribution algorithm in the SSI. |
| 2000/03/16/06 | Iredell | Begin parallel run with observation and analysis changes only. |
Page Last Modified: June 1, 2000