CESM Models

Satellite image of ice and water

The Community Earth System Model (CESM) is a fully-coupled, global climate model that provides state-of-the-art computer simulations of the Earth's past, present, and future climate states.

What Version of the Model Should I Use?

For a scientifically supported target component set and resolution, please refer to the Scientifically Validated Configurations for that target configuration. For component sets and resolutions that are not scientifically validated in any supported release (e.g. cesm1.0.z and cesm1.1.z), CSEG strongly urges you to use the latest model release (in this case cesm1.2.z).

CESM Model Version Naming Conventions

CESM X.Y.Z - CESM model release versions include three numbers separated by a dot (.) where:

  • X - corresponds to the major release number indicating significant science changes.
  • Y - corresponds to the addition of new infrastructure and new science capabilities for targeted components.
  • Z - corresponds to release bug fixes and machine updates.