NCEP Synergy Meeting Highlights: March 29, 2010
This meeting was led by David Novak (HPC) and attended by Chris Caruso Magee (NCO); Becky Cosgrove (NCO); John Ward (EMC); Geoff Dimego (EMC); Eric Rogers (EMC); Mary Hart (EMC); Vera Gerald (EMC); Jamese Sims (EMC); Stephen Jascourt (UCAR/COMET); Steve Silberberg (AWC); Jason Levit (AWC); Steve Weiss (SPC); Andy Dean (SPC); Keith Brill (HPC); Jessica Schauer (TPC); Richard Pasch (TPC); Kathy Gilbert (MDL); Bill Ward (PR); Gene Petrescu (AR); Andy Edman (WR); Dave Myrick (WR); Pete Browning (CR); Bernard Meisner (SR); and Dave Radell (ER)
1. NCO (Chris Caruso Magee)
Global Multi-grid Wave Model
The parallel evaluation for upgrading the global multi-grid wave model has been extended two weeks. Implementation is planned for May 11, 2010. A TIN will be posted shortly.
A significant update to the GFS is planned for June 22, 2010 (see section 2a below). The NCO parallel will be starting soon.
After the GFS implementation, the following sequence of downstream implementations is expected:
NCO is testing a fifth computer slot for HWRF/GFDL runs.
Also, RFCs are being drafted for changes in the HWRF and GFDL models. These changes include HWRF being coupled with HYCOM and a filter applied to the GFDL. These implementations would follow 1 week after the GFS implementation.
Real-Time Ocean Forecast System (RTOFS)
The addition of Jason II satellite data into RTOFS is expected within the next four weeks.
NCO parallel of new air quality products for
For the latest schedule updates see: http://www.nco.ncep.noaa.gov/pmb/changes/
2. NOTES FROM EMC
2a. Global Climate and Weather Modeling Branch (GCWMB) (John Ward)
RFCs are in place for the next major GFS implementation. This implementation is planned for June 22, 2010 and includes:
-improvements to the shallow and deep convection parameterizations.
-increase in resolution (to T574 64L or ~27 km grid spacing).
-replacement of shortwave radiation from NASA based version with random cloud overlap to AER based RRTM with maximum/random cloud overlap.
-inclusion of vertical advection of moisture, ozone and cloud condensate based on positive definite advection scheme.
-changes are also made to boundary layer scheme and gravity wave drag.
-3 hourly data will extend to F192
-High resolution data will extend from F180 to F192.
-Maximum wind gusts variable added.
Testing shows a dramatic reduction in grid point storms (colloquially known as “precip bombs” or “grid-scale feedback”), which have plagued the GFS. Tropical cyclone tracks and intensity have also shown improvement.
The resolution changes will not significantly affect the size of the pressure coordinate files, but will affect the sigma coordinate files.
EMC has a web page which compares real-time forecasts between the operational GFS and the parallel GFS is at:
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/ (selected from "GFS Weather Fcst Maps" on the left panel). Note that these web comparisons are only available for the 00Z run.
EMC is working to establish an NAWIPS feed of EMC parallels for NCEP Centers.
Plans are continuing to add the Fleet Numerical Meteorology and Oceanography Center (FNMOC) ensemble to NAEFS. The addition is tentatively planed for Q4 of 2010.
is underway for creating downscaled numerical guidance from the native GFS data
for Guam and
2b. Mesoscale Modeling Branch (MMB)(Geoff Dimego)
Select post-processed variables primarily related to aviation are expected to be added in Q4FY10.
A upgrade is being planned for FY11 which replaces the remaining Eta and RSM members with NEMS-NMM-B members. This upgrade would also increase resolution to ~22-25 km, and add a BUFR output. Assuming all dependencies on Eta and RSM models will be removed with this upgrade, these models could be discontinued.
a parallel 2.5 km CONUS version, which is being evaluated by ER and WR. Expect
implementation in Q4 of FY10. Also working on a slight realignment of the
High Resolution Window Runs
plans include upgrading the WRF code version and adding a run to cover
next large implementation will be transitioning the WRF-NMM to the NMM-B and
embedding this model within the National Environmental Modeling System (NEMS) framework
sometime in FY2011. This transition allows the establishment of 4 km nests over
the CONUS, a 6 km nest over
the transition of the RUC to the WRF-ARW in early FY11. The model slot will be
named the Rapid Refresh. The domain will cover
2c. Marine Modeling and Analysis Branch (Vera Gerald)
The Global Multi-grid Wave Model is planned to be upgraded May 11, 2010 (see above).
3. FEEDBACK FROM MDL/OPERATIONAL CENTERS/REGIONS
3a. MDL (Kathy Gilbert)
snow and QPF gridded GFS MOS guidance was added to NDGD in January. Within the month MDL will began routing the Alaska snow and QPF grids to the SBN, but AWIPS changes will be necessary for viewing. Alaska
The 1200 UTC CONUS snow grids will also be routed to the SBN, and the CONUS snow grids were extended from day 5 to day 6. These changes are expected to be viewable in AWIPS.
Hawaii GMOS grids are expected to be implemented by the end of FY10.
Expressed interest in establishing operational data flows for the parallel 2.5 km Gridded MOS from MDL.
An air quality implementation is expected in early summer.
4. The next Synergy Meeting will be held at 2:30 pm EDT on Monday, April 26, 2010 in room 209, with remote teleconferencing capability.