CESM Models

CCSM4.0 CAM Documentation



    Version 4.0 of the Community Atmosphere Model (CAM) is the latest in a series of global atmosphere models developed primarily at the National Center for Atmospheric Research (NCAR). CAM4.0 is a release version provided for coupled model development and testing of CCSM4.0 and contains a number of notable improvements. Development of the model was led by the Atmosphere Model Working Group (AMWG). Additional physical process improvements will be available in the upcoming release of CAM5.


Model output data and diagnostic plots

CAM Post-Processing Utilities

The CAM post-processing utilities are currently provided as a service to the community. The CAM diagnostic package can be accessed from the release code repository [registration required]. Basic documentation is provided on the CAM diagnostic package webpage.

Model and diagnostics support

CAM is fully supported for 1 degree and 2 degree finite volume simulations. Informal community support for all other model configurations and the diagnostic package is provided via the CCSM bulletin board. General questions should be submitted to this bulletin board; however, any bugs found in the model or diagnostic packages should be reported to the AMWG liaison.

Port Validation

Once you've gotten CAM to run the next step is to validate that it's running correctly! [port validation procedure]


Model Source Code

Copyright and Terms of Use

All CCSM source code is subject to the following Copyright Notice and Disclaimer.

Acquiring the Code

CCSM source code is distributed through a public Subversion code repository. This code can be checked out using Subversion client software, such as the command tool svn, or simply viewed with a web browser.

A short registration is required to access the repository. After registering, you will receive an email containing a user name and password that is necessary to gain access to the repository.

Acquistion of the code is more fully described in the CCSM4.0 User's Guide.

Version Summaries and Known Problems

The following table lists the available versions of code along with their test record and any known problems in the code.

Reporting a Problem

If you have any problems, please first read the User's Guide including the sections on FAQs and Use Cases. Please also refer to the CCSM Bulletin Board, which is in place to facilitate communication within the CCSM community. Finally, please also refer to the Known Problems entries that are provided with every release and release update. If questions or problems still exist, then please send an email to help@cgd.ucar.edu. Support questions will be answered as resources are available.