CESM Models

CCSM1.0 Public Release

CSM software is based on a framework that divides the complete climate system into component models connected by a coupler. Individual component models, atmosphere, land, ocean, and sea-ice, can be exchanged for alternate models, thus allowing different configurations appropriate for different applications.

CSM1.0, release June 6, 1996, is the first generation of the Climate System Model, a comprehensive coupled model of the Earth's climate system. In this first release, the atmosphere & land models (CCM3.0 & LSM 1.0) are designed to be run at T42 resolution and the ocean & ice models (NCOM 1.1 & CSIM 0.9) are designed to be run at a nominal 2x2 degree resolution. This initial release is only intended to be run on the NCAR CSL Crays (antero, aztec or piaute). Future releases will have more flexibility with respect to the choice of models, grid resolution, and machine portability.

This model and the resulting science are documented in a special issue of the Journal of Climate, June 1998.

Download Source Code, Input Data, and Run Scripts

This code is no longer supported and is no longer available for download.

Model Documentation

Following are links and documentation related to the original CSM1.0 release.

Although this code is no longer supported and is no longer available for download, these related artifacts are left here for historical puposes. Note that there may be broken links or references to data that is no longer availalble.

Automatic CSM1.0 install:

To automatically install and run the CSM1.0 model, logon to one of the NCAR CSL Crays and enter the command: /ccm/proc/tools/install.csm1.0

Standard CSM1.0 install:

To install and run the CSM1.0 model by hand, download the following tar files and follow the installation instructions.


Links to other software required for remote (non-NCAR) CSM installation.

CESM Project

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.

CESM is sponsored by the National Science Foundation (NSF) and the U.S. Department of Energy (DOE). Administration of the CESM is maintained by the Climate and Global Dynamics Division (CGD) at the National Center for Atmospheric Research (NCAR).