| Basic Description | |
| 4km WRF-NMM, run every 6 hours out to 24 hours, using LAPS "hot-start" for precipitation and high resolution GFS boundary conditions. MODIS SSTs are also used as part of the surface initialization. |
|
| Computational Domain | |
| WRF Core | Non-hydrostatic Mesoscale Model (NMM) |
| Number of Domains | 1 |
| Grid Dimensions | 98 x 146 |
| Grid Spacing | 4 km |
| Map Projection | rotlat |
| Center Lat./Lon. | 30.6, -88.3 |
| Time Step | 6 sec |
| Vertical Levels | 45 |
| Pressure at Model’s Top | 100 hPa |
| Dynamics Configuration | |
| Model Dynamics | Non-hydrostatic |
| Time Integration | Runge-Kutta, 3rd Order |
| Turbulence and Mixing | Evaluates Mixing terms in Physical Space |
| Eddy Coefficient | Horizontal Smagorinsky, 1st Order |
| Upper level Damping | On , W-Rayleigh relaxation layer |
| Vertical Velocity Damping | On |
| Physics Configuration | |
| Cumulus Scheme | Situational dependent – generally off. |
| Cumulus Time Step | 5 minute when on. |
| Microphysics Scheme | Ferrier |
| Boundary Layer Scheme | Mellor-Yamada-Janic |
| Boundary Layer Time Step | 3 min |
| Land-Surface Scheme | Noah Land Surface Model |
| Number of Soil Layers | 4 |
| Source of Landuse and Soil Data | Standard Initialization (SI) |
| Surface Layer Scheme | Monin-Obukhov (Janjic Eta) Scheme |
| Longwave Radiation | GFDL Longwave (NMM only) |
| Short Wave Radiation | GFDL Shortwave (NMM only) |
| Radiation Time Step | Auto Minutes |