The WRF-NMM model is a fully compressible, nonhydrostatic model with a hydrostatic option (Janjic 2003). Its vertical coordinate is a hybrid sigma-pressure coordinate. The grid staggering is the Arakawa E-grid. The model uses a forward-backward scheme for horizontally propagating fast waves, implicit scheme for vertically propagating sound waves, Adams-Bashforth scheme for horizontal advection, and Crank-Nicholson scheme for vertical advection. The same time step is used for all terms. A number of first and second order quantites, including energy and enstrophy, are conserved.
The WRF-NMM model code contains an initialization program (real_nmm.exe) and a numerical integration program (wrf.exe). The WRF-NMM model Version 3 supports a variety of capabilities. These include:
Required libraries (WRF and WPS)
Optional libraries for GRIB2 support (WPS)
In order to run Real Data Cases you will need to run the following programs:
WRF Tutorial Presentations
Also browse the WRF-NMM Users Page for more information and documentation.