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WRF Data Assimilation System Users Page

Welcome to the page for users of the Weather Research and Forecasting (WRF) model data assimilation system (WRFDA). The WRFDA system is in the public domain and is freely available for community use. It is designed to be a flexible, state-of-the-art atmospheric data assimilation system that is portable and efficient on available parallel computing platforms. WRFDA is suitable for use in a broad range of applications, across scales ranging from kilometers for regional and mesoscale modeling to thousands of kilometers for global scale modeling.

The Mesoscale and Microscale Meteorology (MMM) Division of NCAR currently maintains and supports a subset of the overall WRF code (Version 3) that includes:

- WRF Software Framework (WSF)
- Advanced Research WRF (ARW) dynamic solver, including one-way, two-way nesting and moving nests, grid and observation nudging
- WRF Pre-Processing System (WPS)
- WRF Data Assimilation System (WRFDA) (found on this site)
- Numerous physics packages contributed by WRF partners and the research community

Other components of the WRF system will be supported for community use in the future, depending on interest and available resources.

Quick links:

  • Download WRFDA Latest version: 3.6 (Released April 18, 2014)
  • WRFDA Users' Guide Instructions on installing and running the latest version of WRFDA
  • Free Input Data Free-to-download datasets to use with WRFDA
  • WRF Model Users Page WRF Model source code, User Guide, and Online Tutorial
  • Get help for WRFDA through the wrfhelp email service

  • Locations of Site Visitors


    Latest WRFDA Release

    WRFDA Version 3.6
         (Released April 18, 2014)

    Upcoming events

    June 2014

    2014 WRF Users Workshop, NCAR Center Green Campus, Boulder, CO, USA. Registration is currently open!

    July 2014

    2014 WRFDA New User Tutorial, NCAR Foothills Laboratory, Boulder, CO, USA. Registration is full!

    What's new

    June 12, 2014

    The MADIS2LITTLER converter has been updated. It is now compatible with MADIS API version 4.2.

    May 16, 2014

    The Documents & Publications page has been updated.

    May 2, 2014

    The Known Problems page has been updated with bug fixes for Version 3.6.

    The information page for the Yellowstone supercomputer has been updated.


    Archived news and announcements


    Since July 2011
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