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Description of WRF-EMS Model at LWX

Information about the WRF-EMS modeling package
General information about the WRF Model

Run Times:
The model is run every 3rd hour to a forecast time of 24 hours. The table below describes model start times and which files are used for each model run:

Initialization Time
Start Time
Boundary Conditions (GFS)
Web Post Time
00Z (6hr fcst)
12Z (6hr fcst)

The model is run on an 8 CPU 32 bit Linux cluster (2.4 GHZ). Total system memory is 16GB. The model domain is 190x358 with a resolution of 4 km.

Post processing is completed on an additional dual processor Linux PC (2.6 GHZ) for display of model information on AWIPS.

General Model Settings (These may vary at times):

         General WRF Model Run Timing and I/O Information

             Start Date/Time                 : Thu Jul 16 2009 18:00:00 UTC
             Simulation Length               : 30 Hours
             Boundary Condition Frequency    : 3 Hourly
             Output Freqency                 : 1 Hourly
             Forecast Times per Output File  : 1
             Output File Format              : WRF netCDF (Not AWIPS compatible)

         Model Computational Domain Information

             Note: MOAD - Mother Of All Domains

             WRF Core                        : Non-hydrostatic Mesoscale Model (NMM)
             Number of Domains               : 1
             MOAD Grid Dimensions (W-ExS-N)  : 190x358
             MOAD Grid Spacing               :  4.0 km
             Map Projection                  : rotlat
             MOAD Center Lat/Lon             : 35.6,-80.3
             MOAD Timestep                   : 9 seconds
             Vertical NMMH Levels            : 31
             Pressure at Model Top           : 50 mb

         WRF Run Dynamics Configuration

             Model Dynamics                  : Non Hydrostatic
             Time Integration                : Runge-Kutta 3rd Order
             Turbulence and Mixing Option    : Evaluates Mixing Terms in Physical Space
             Eddy Coefficient Option         : Horizontal Smagorinsky First Order Closure
             Upper Level Damping             : Off
             Vertical Velocity Damping       : On

         WRF Run Physics Configuration

             Cumulus Scheme                  : No Cumulus Scheme
             Microphysics Scheme             : Ferrier Microphysics
             Boundary Layer Scheme           : Global Forecast System (GFS)
             Boundary Layer Timestep         : 3 Minutes
             Land-Surface Scheme             : NMM Land Surface Model
             Number of Soil Layers           : 4
             Source of Landuse and Soil Data : Standard Initialization (SI)
             Surface Layer Scheme            : 3
             Long Wave Radiation             : GFDL Long Wave Radiation Scheme (NMM only)
             Short Wave Radiation            : GFDL Short Wave Radiation Scheme (NMM only)
             Radiation Timestep              : Auto Minutes

Back to WRF index page

National Weather Service
Weather Forecast Office Baltimore/Washington
44087 Weather Service Rd.
Sterling, VA 20166
Phone: (703) 260-0107
Page last modified: July 16, 2009 4:45 PM
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