WRF 2014 Major Release

WRF Release Information

The most recent major WRF release is Version 3.6, issued April 18, 2014. The final release details are provided here: WRF V3.6 Information and Download. The next major WRF release will be in Spring 2015. The timeline for it is shown below.

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.


Features— WRF V3.6, 2014 Major Release

A sample of V3.6 features is shown below. The inclusion of any code in a release is dependent on the code's following testing and preparation requirements and meeting the deadlines for submission, testing, and revision. Developers may have code considered for a 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.

  • Lake model added
  • Physics: HUJI spectral bin scheme added, Thompson aerosol-aware scheme implemented, NSSL 2-moment scheme updated, Milbrandt scheme improved
  • WRFDA: Upgraded 4DVAR radar data assimilation scheme, new cycled 3DVAR radar data assimilation scheme
  • WRF-Chem: Removal of undocumented features, improved capabilities of existing packages, changes to handling of anthropogenic emissions
  • WRF-Hydro: Noah MP with WRF-Hydro added, CLM interface added
  • HWRF: Multiple storm-following nests
  • Software framework: Moving nest use of high-res terrain/landuse datasets; Improvements to netCDF write calls

Timeline— WRF 2015 Major Release

The timeline for the next major WRF release, which will be in 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)

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

September 30, 2014

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

November 1, 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.

Late January 2015

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

Late February 2015

  • Second friendly-user 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