WRF 2014 Major Release

WRF Release Information

The most recent major WRF release is Version 3.6 (April 18, 2014), and the most recent minor relase is WRF V3.6.1 (August 14, 2014). The details on these may be found through this page: WRF Downloads and Information.

The next major WRF release will be WRF Version 3.7 (V3.7) in Spring 2015. The timeline for it is given below. A sampling of potential features for V3.7 is listed, and this will evolve as contributions are received and testing is performed.

Developers seeking to have their codes for new or improved capabilities for the WRF system considered for the 2015 release must review Information for Code Contributors. Prospective contributors may write to wrfhelp@ucar.edu for information and for contacting the Developers' Committee, which oversees WRF code contributions and manages the repository, or the Release Committee, which oversees the major release process. Both the Developers' Committee and the Release Committee are described in WRF Code Repository and Release Administration.


Candidate Features— WRF Version 3.7

This is a preliminary list of features that may appear in the 2015 major release, WRF V3.7. The inclusion of any code in a release depends on its following testing requirements and meeting the release schedule deadlines.

  • Software: Parallel I/O, Vertical nesting, CF compliance
  • Physics: New sea surface aerodynamic roughness scheme, Selected scale-aware PBL and Cu schemes, Climatological ozone information for radiation
  • WRFDA: Revision to radar data assimilation codes, GenBE updates
  • WRF-Chem: CB5 mechanism, GOCART background fields from WPS
  • WRF-Hydro: Channel routing optimization, New groundwater model, Rapid model computation option

Developers may have code considered for the release as long as the timeline and the procedures for contribution are met (see Information for Code Contributors). As described in Information for Code Contributors and Testing Information for Contributors, developers and contributors may contact wrfhelp@ucar.edu for information on providing their code to a member of the Developers' Committee and on preparing and testing it prior to submission.


Timeline— WRF Version 3.7

The timeline for the next major WRF release, projected as WRF V3.7 in Spring 2015, is as follows. "RC" refers to the Release Committee; "DC" refers to the Developers' Committee. "R" refers to the target release date.

Early September 2014

Approx. 6-mo advance date (R-6m)

  • RC begins meetings for major release cycle.
  • WRF users notified of release and provided information on dates and where to find requirements and procedures.

September 30, 2014

  • Notices of intent to submit code are due from potential contributors.

October 31, 2014

Approx. 4-mo advance date (R-4m)

  • New code or modifications from outside contributors must be provided to the RC point of contact or the DC. Code must have been run through the required testing.

December 1, 2014

Approx. 3-mo advance date (R-3m)

  • Repository frozen (bugfixes excepted).
  • Check on new features for the release is discussed by the RC and DC.

Mid-Late January 2015

  • 1st friendly-user release. Preliminary release code made available for testing.

Mid-February 2015

  • 2nd friendly-user release. Updated preliminary release code made available for testing.
  • Remaining bug fixes implemented.
  • Full set of regression tests run on machines at NCAR.
  • Weekly RC meetings.

Early March 2015

  • Final round of large testing. RC and DC meetings focus on status of code and testing.

Mid-March 2015

  • DC certifies code (final approval) for release. Code packaged and staged for release.

Late March 2015

  • Release.


  • Release Committee

    The WRF Release Committee oversees the major releases of WRF. It is described in the policies for NCAR's administration of the WRF code in WRF Code Repository and Release Administration. The members are listed below.

    Jordan Powers, NCAR/MMM— Chairman
    Michael Barlage, NCAR/RAL
    Mrinal Biswas, DTC
    Tom Black, NOAA/NCEP
    Jimy Dudhia, NCAR/MMM
    Dave Gill, NCAR/MMM
    Georg Grell, NOAA/ESRL
    Michael Kavulich, NCAR/MMM
    Steven Peckham, NOAA/ESRL
    Wei Wang, NCAR/MMM
    Jamie Wolff, DTC
    Wei Yu, NCAR/RAL