CESM Models

CESM1.2 Series Release Notes

The CESM1.2 Release Notes page contains summary information for each release in the CESM1.2 series, where notable new features are highlighted and known problems are documented as they are discovered.

Please note that updates on issues, including bugs, associate with this model release, will be posted on the Known Issues (see below) and through the CESM Bulletin Board. It is the users responsibility to continually keep informed of these issues.

Release Summary for CESM1.2.1

The CESM1.2.1 is the first incremental bug fix and machines update release in the CESM1.2 series.

** IMPORTANT NOTE ** Starting with CESM1.2.1, the Subversion repository path has changed. All documentation for downloading the most current version of the model has been updated in the CESM User's Guide to reflect this change and older version differences are noted.

To download the CESM1.2.1 release code, use this command:

> svn co --username guestuser --password [password] 
https://svn-ccsm-models.cgd.ucar.edu/cesm1/release_tags/cesm1_2_1 cesm1_2_1

You may be prompted up to 3 times for the username and password when checking out the code for the first time from this new Subversion path. This is because the code is distributed across a number of different Subversion repositories and each repository requires authentication.

Release Summary for CESM1.2.0

The CESM1.2 release has numerous new key features among which are the addition of CLM4.5, new science changes to CAM5 running with the CAM-SE dynamical core, and new scripting infrastructure for the generation of component sets, grids and model testing.