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1st CRTM User/Developer Workshop
Tuesday, 16 May 2017

in coordination with The 15th JCSDA Technical Review Meeting & Science Workshop on Satellite Data Assimilation. Registration for this workshop is now closed.


The development of the Community Radiative Transfer Model (CRTM) and its subsequent improvements has created a critically important method for NWP models to assimilate satellite measurements made under all weather conditions. The CRTM was primarily developed by STAR and EMC scientists with the support of the Joint Center for Satellite Data Assimilation (JCSDA) to provide fast, accurate satellite radiance simulations and associated Jacobian calculations under all weather and surface conditions, CRTM supports all current operational and many research satellite measurements, covering wavelengths ranging from the visible through the microwave. The model has undergone substantial improvement and expansion, since the first version released in 2004. The CRTM has been used in the NOAA/NCEP and U.S. Navy operational data assimilation systems and by many other JCSDA partners such as NOAA/NESDIS/STAR, NOAA/OAR, NASA/GMAO, Naval Research Laboratory, Air Force Weather, and within multiple university environments. Over the past 13 years, external research groups and operational centers alike have made essential contributions to CRTM development. A key goal of the CRTM core team is to ensure that CRTM becomes a true community radiative transfer model for all users.

The CRTM User/Developer workshop is designed to be a hands-on environment for all things CRTM.

Organization of the Meeting

The CRTM User/Developer workshop will be conducted on the afternoon of May 16th over approximately 4 hours and 30 minutes (allowing for breaks). You will probably want to bring a laptop to view the material and take notes. Due to technical limitations of the guest WiFi, we'll be unable to SSH into remote machines – this means that you’ll have to take notes. [Note: an effort will be made to enable SSH access over the guest WiFi, but don't count on it.]. You're on your own for lunch on May 16th, but feel free to bring it into the conference room.


The 1st CRTM User/Developer Workshop co-organized with the 15th JCSDA Technical Review Meeting & Science Workshop on Satellite Data Assimilation will be hosted in the NCWCP building in College Park, Maryland. This location offers convenient access to the Metro public transit system of the Washington, DC area (College Park/Univ. of MD Metro station, and the Metro bus). It is also within walking distance of downtown College Park, MD.

For dining and accommodation options in College Park:


For parking, participants are invited to park in the NCWCP parking. Note that a Government-issued ID may be required.

Workshop Resources

Specifically the half-day workshop will be broken into two sessions in the afternoon of May 16, 2017. You are welcome and encouraged to participate in either or both sessions!

Session 1: User Workshop
(1:00 - 3:00 p.m. ET)

  • Focus on functionality, capabilities, and specific use cases of CRTM.
  • User Tutorials will be provided and will be available online for later use.
  • Case study walk-throughs will be used to identify common issues with running CRTM in a stand-alone mode.
  • How to get what you need out of CRTM
  • Information on future updates / development plans

Session 2: Developer Workshop
(3:30-5:30 p.m. ET)

  • Focus on commonly developed/modified items in CRTM
  • Coding standards update
  • Optimizing your code
  • Adjoint and Tangent Linear coding overview
  • Future development plans / feedback

Remote Access

Please make sure to specify on your registration that you wish to attend remotely.

Teleconference number:
1-866-715-2479 (US)
1-517-345-5260 (Int'l)
Participant Code:
Event Number
999 899 645
WebEx Password

Points of Contact

Should you have any questions about the workshop, please contact Benjamin T. Johnson, Ling Liu, Ana Carrion.

Registration and Other Logistics:

All logistical details will be available online via the JCSDA website. The preferred method of registration is via the online link from that page. The registration deadline is by Friday, April 21st, 2017.

Participation in the meeting is free of charge.

Modified June 2, 2017 4:06 PM
NOAA | NWS | NASA | Navy Weather
Air Force Weather | Website owner: JCSDA
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