Climate Variability, the Oceans, and Societal Impacts

P2.21

A Global Parallel High-Resolution UCLA-POP Coupled Atmosphere-Ocean GCM for Assessing Climate and Variability in the Ocean

Jin-Yi Yu, Univ. of California, Los Angeles, CA; and R. C. Malone

A global, high-resolution, and parallel coupled atmosphere-ocean general circulation model (CGCM) has been developed under the collaborations between University of California Los Angeles (UCLA) and Los Alamos National Laboratory (LANL). This Global UCLA-POP CGCM consists of the UCLA atmospheric GCM (AGCM) and LANL's Parallel Ocean Program (POP) oceanic GCM (OGCM).

The AGCM covers the global atmosphere and has a horizontal resolution of 2.5 degree in longitude and 2 degree in latitude. The OGCM covers the global ocean between 70N and 70S, and has a latitudinal resolution of 1/3 degree between 10S and 10N and 2/3 degree elsewhere. The longitudinal resolution is 1 degree. Both models include advanced parameterizations of the major physical processes in the atmosphere and ocean and have been parallellized for high computational performance. CGCM integrations are performed on a 1-TeraOp peak speed SGI Origin 2000 system at LANL.

In this paper, we will present the simulated seasonal cycle and interannual variability over global ocean and compare them with observations. We will also discuss the potential scientific applications on assessing climate and variability of the ocean using this newly developed coupled model.

Poster Session 2, Forecasting Climate Variability Posters
Tuesday, 16 January 2001, 2:15 PM-3:30 PM

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