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NCAR CSM Home Page

The NCAR CSM Project


The Climate System Model (CSM) project formally began in January 1994 with the long-term goal of building, maintaining, and continually improving a comprehensive model of the climate system, including both physical and biogeochemical aspects. CSM is an NCAR-wide project centered in CGD with participants from the Atmospheric Chemistry Division (ACD), the High Altitude Observatory (HAO), and the Scientific Computing Division (SCD).

The comprehensive CSM is composed of a set of four independent models for the basic system components: atmosphere, ocean, land surface, and sea ice, each communicating with a "flux coupler" using message passing. The component models are driven primarily by fluxes at the Earth's surface. Those fluxes that directly depend on the state of more than one component model, e.g., turbulent fluxes of latent and sensible heat, are computed within the flux coupler, which is also responsible for interpolating and averaging between the differing grids of the component models while conserving local and integral properties.

The CSM Project.

Component model documents

Experiments and results

Output Data Conventions.

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