CESM Models

CCSM2.0.1 Coupler v5.0.1 Documentation


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The CCSM coupler, version 5.0.1 (cpl5), was released in October 2002 as part of the CCSM2.0.1 release.


What is a "coupler"?

CCSM coupled model is based on a framework which divides the complete climate system into component models connected by a coupler. This design requires four component models -- atmosphere, land, ocean, and sea-ice -- each connected to the coupler, and each exchanging data with the coupler only. From a software engineering point of view, the CCSM is not a particular climate model, but a framework for building and testing various climate models for various applications. In this sense, more than any particular component model, the coupler defines the high-level design of CCSM software.

The coupler code has several key functions within the CCSM framework: