The annual WRF users' event will take place at the NCAR's Center Green Campus, Boulder, Colorado, on 24 - 28 June 2013.

24 June (1:30 p.m. to 5:00 p.m.): Fundamentals of WRF Physics (Part 4: Atmospheric radiation and effect of clouds, ozone and aerosols)
25-27 June: The 14th WRF Users' Workshop
28 June (Friday morning):  Instructional Sessions (WRF- Hydro, NCL, VAPOR, SKEBS, MET, IDV)

Call for Papers

The primary objectives for the Users' Workshop are to present WRF modeling system updates, to discuss model development and issues, and to consider evaluations and applications of the model. Papers focusing on development and testing of model applications (in all areas), and those on the comparison of different versions of the modeling system, are especially encouraged. Authors are given the option of requesting either a poster or an oral presentation; however we would like to strongly encourage authors to consider submissions for a poster presentation, due to time constraints for oral sessions.

To submit an abstract please go to the registration page.

The Workshop schedule will be posted on the web by 3 June.


Please go to the registration page to register for the workshop and submit papers.

Fundamentals of WRF Physics, Monday 24 June

Part 4: Radiation and Effects of Clouds, Ozone and Aerosols (1:30pm - 5:00pm)

Instructional Sessions, Friday, 28 June

Short tutorial sessions will be offered for:

WRF-Hydro (8:30 am - 10:00 am)

This 'mini-tutorial' is offered to provide a very basic introduction to the structure and use of the WRF-Hydro extension package. User's will receive technical descriptions of the model coupling architecture, data sets and formats required for execution, compilation and execution procedures, and a quick overview of the WRF-Hydro website and support materials.

NCL (8:30 am - 10:00 am)


The NCAR Command Language (NCL) is a scripting language designed specifically for the analysis and visualization of geoscientific data. Some of the data formats it supports include NetCDF, GRIB1, GRIB2, shapefile, HDF4, HDF-EOS2, and HDF-EOS5. Its visualizations are world-class and highly customizable. This session will give participants an overview of the capabilities of NCL including new features, and will focus mostly on how to display WRF model data.

VAPOR (8:30 am - 10:00 am)


This tutorial is a hands-on course, presenting a variety of techniques for understanding WRF output through the use of 3D visualization.  The goal is to enable attendees to easily use 3D graphics and animation in the analysis of WRF output.  Attendees are not expected to be familiar with 3D graphics.  The visualization will be performed using VAPOR (http://www.vapor.edu), an interactive visualization tool that has been developed at NCAR for the understanding of turbulence data. This course will be held at the NCAR CTTC computer classroom in building CG2, a short walk from the WRF workshop in building CG1.  Attendance is limited to 32, with one or two attendees per computer.

SKEBS (10:30 am - 12:00 pm)

The mini tutorial will provide a brief introduction to the scheme consisting of background, how to run SKEBS in WRF, version history and results of an application to mesoscale ensemble forecasts. An informal SKEBS user forum will follow consisting of questions, answers, feedback to the model developers and an open discussion. Users are encouraged to contribute comments and preliminary reults on their application to brainstorm and trouble-shoot.

Topics in Advanced Verification Methods (10:30 am - 12:00 pm)

In this session, verification experts will present a survey of advanced verification methods. Techniques for spatial, temporal, and multivariate assessment will each be represented. Several examples will be used to illustrate the methods. Community verification software packages will be discussed. 

IDV (10:30 am - 12:30 pm)


Unidata's Integrated Data Viewer (IDV) is a freely available, multiplatform visualization and analysis tool for interdisciplinary geoscience data. The IDV brings together the ability to display and work with a wide range of data including satellite imagery, gridded data, observations and radar data, all within a unified interface.

Participants are reuired to furnish their own laptop computers and to be adept at installing and configuring new software on their machines. The IDV are Java-based applications that require Java 1.6.  The user’s machine must provide full OpenGL video support and be configured with at least 1 GB of RAM (2 GB or more is strongly recommended).

All workshop activities will be finished by 12:30 Friday, 28 June 2013.

WRF Helpdesk

During the workshop, the WRF helpdesk will be open for several sessions for users to discuss their special issues with developers.


Short abstract submission: 3 May

Any changes made to the short abstract: 2 June

Extended abstract and poster submission: 17 June (if you would like to have it online at the workshop)

Early registration ends: 10 June

Late registration begins: 11 June

After 7 June 2013: No refunds for cancellations

Workshop Publication

Short abstracts will be distributed during the workshop. Workshop presentations and extended abstracts will be published on the web (you may indicate that you do NOT want us to publish your materials, when you submit it). Extended abstracts in PDF format can be submitted via the registration page, and will appear on the web before the workshop.

We would like to encourage all poster presenters to provide us with an electronic version of their posters (or a short ppt file describing the poster), so this can be posted on the web before the workshop.

Workshop Registration Fees

The early registration fee is $200.00. If you register after 10 June, the registration fee will be $250.00.


Blocks of hotel rooms are reserved at 3 local hotels. More information about the workshop location and lodging is available at the "Travel/Lodging" link.

Workshop Planning Committee

Jimy Dudhia, Georg Grell, Joe Klemp, Cliff Mass, Louisa Nance, Jordan Powers, and Wei Wang