CCPP-SCM Version 3.0

Release Date:

The CCPP-SCM Version 3.0 was released on June 17, 2019.

Release Notes

The Common Community Physics Package (CCPP) v3.0 was publicly released in June 2019. The CCPP contains a library of physical parameterizations (CCPP-Physics), and the framework that connects it to host models (CCPP-Framework). In this release, the CCPP has been bundled with the GMTB Single Column Model (SCM) v3.0.  

The CCPP-Physics is envisioned to contain parameterizations used by NOAA operational models for weather through seasonal prediction timescales, as well as developmental schemes under consideration for upcoming operational implementations. This version contains all parameterizations of the current operational GFS v15 (implemented on June 12, 2019), plus additional developmental schemes. The schemes are grouped in four supported suites described in detail in the CCPP Scientific Documentation (GFS_v15, GFS_v15plus, csawmg, and GSD_v0). The Zhao-Carr microphysics and the GFS_v14 suite are no longer supported.

Five experimental cases are available for use with the GMTB SCM: BOMEX maritime shallow convection, LASSO continental shallow convection, ASTEX stratocumulus-to-cumulus transition, ARM SGP Summer 1997 continental deep convection, and TWP-ICE maritime deep convection.

For access to the code and data, please visit the CCPP website at, where you will find a Users’ Guide, a list of known issues, frequently-asked questions, and Technical Documentation.

For questions or comments about the CCPP, the SCM, and other Global Model Test Bed activities, please contact us at GMTB Help.

Known Issues and Fixes

  1. The mean effective radii for liquid cloud, ice cloud, and snow used in the radiation parametrization when Thompson microphysics is used is likely incorrect. We are investigating a bug report and will follow up with more information. This problem only affects runs using the Thompson microphysics (Suite GSD_v0).
  2. cheyenne users:

    • the latest version of PGI on cheyenne is currently not working;  check back for further updates

    • the modules needed to compile and run on cheyenne have changed with the system upgrade (7/1/2019). Please update your local copy from the release branch:

git pull origin v3.0