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Revision as of 19:30, 9 December 2015


The Weather Research and Forecasting (WRF) Model is an open-source mesoscale numerical meteorological model from NOAA. It has two dynamical cores (NMM designed for atmospheric research and ARW for operational forecasting needs), data assimilation and parallelization capabilites. It covers a wide range of meteorological applications across scales from tens of meters to thousands of kilometers [1].

This brief tutorial refers to WRF-ARW and covers:

Model Overview

WPS (WRF Pre Processing System) - configured by namelist.wps
  • geogrid.exe - static domain information
  • ungrib.exe - convert Grib files to a specific binary file (intermediate file format)
  • metgrid.exe - horizontal interpolator of FILEs to domain resolution
WRF model - configured by namelist.input
  • real.exe - vertical interpolator
  • wrf.exe - meteorological model
  • geog - Geographical datasets[2] available in WRF Page [3]
  • atmospheric forcing from another model such as GFS [4]

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