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Climate Simulations with CCSM3/HYCOM
Jianjun Yin, Eric Chassignet, Sumner Dean, Bill Large, Nancy Norton, Alan Wallcraft
Center for Ocean-Atmospheric Prediction Studies, FSU
(Abstract received 07/18/2007 for session X)
ABSTRACT
Acknowledgements: Ginger Caldwell, Ge Peng, Juliana Rew, Stephen Yeager A new version of NCAR’s CCSM3 climate model has been developed with HYCOM as its ocean component. The performance of CCSM3/HYCOM is first tested by performing long-term integrations (150 to 500 years) with prescribed atmospheric forcing (CORE) and comparing the results to the standard CCSM3/POP configurations. The comparison consists of an evaluation of the time evolution of the ocean temperature and salinity, ocean currents, water mass distribution and sea ice extent. Special attention is given to the equatorial current system in the Pacific Ocean and the meridional overturning circulation (MOC) in the Atlantic Ocean. The former is related to El Nino and the latter is important for the large amount of northward heat transport. Results from the first 25 years of a fully coupled CCSM-HYCOM integration will also be presented with its initial evolution compared to the experiments with prescribed atmospheric forcing.
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2007 LOM Workshop, Bergen, Norway, August 20-22, 2007