CCSM2.0 Climatological Data Ocean Model v5.0 (docn5)
The CCSM Data Ocean Model, version 5.0 (docn5), was released on May 17, 2002, as part of the CCSM2.0 release.
What is a "data ocean model"?
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, sea-ice, land, and ocean -- 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.
The Climatological Data Ocean Model (docn5) functions as the ocean component in a CCSM configuration. The data ocean component interacts with the flux coupler just like any ocean model would, but it is not an active model. Rather, it takes SST data from an input data file and sends it to the coupler, ignoring any forcing data received from the coupler. The input data file may contain either climatological SST data (e.g. from Shea, Trenberth, & Reynolds) or a time series of multi-year data. Such a "data model" is useful for coupling active atmosphere and land models with climatological or multi-year SST forcing data.
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).