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- Title
GFDL's CM2 Global Coupled Climate Models. Part II: The Baseline Ocean Simulation.
- Authors
Gnanadesikan, Anand; Dixon, Keith W.; Griffies, Stephen M.; Balaji, V.; Barreiro, Marcelo; Beesley, J. Anthony; Cooke, William F.; Delworth, Thomas L.; Gerdes, Rudiger; Harrison, Matthew J.; Held, Isaac M.; Hurlin, William J.; Hyun-Chul Lee; Zhi Liang; Giang Nong; Pacanowski, Ronald C.; Rosati, Anthony; Russell, Joellen; Samuels, Bonita L.; Qian Song
- Abstract
The current generation of coupled climate models run at the Geophysical Fluid Dynamics Laboratory (GFDL) as part of the Climate Change Science Program contains ocean components that differ in almost every respect from those contained in previous generations of GFDL climate models. This paper summarizes the new physical features of the models and examines the simulations that they produce. Of the two new coupled climate model versions 2.1 (CM2.1) and 2.0 (CM2.0), the CM2.1 model represents a major improvement over CM2.0 in most of the major oceanic features examined, with strikingly lower drifts in hydrographic fields such as temperature and salinity, more realistic ventilation of the deep ocean, and currents that are closer to their observed values. Regional analysis of the differences between the models highlights the importance of wind stress in determining the circulation, particularly in the Southern Ocean. At present, major errors in both models are associated with Northern Hemisphere Mode Waters and outflows from overflows, particularly the Mediterranean Sea and Red Sea.
- Subjects
CLIMATE change; OCEAN circulation; SIMULATION methods &; models; HEAT transfer; WIND speed; SEA ice; TEMPERATURE; SALINITY; FLUID dynamics
- Publication
Journal of Climate, 2006, Vol 19, Issue 5, p675
- ISSN
0894-8755
- Publication type
Article
- DOI
10.1175/JCLI3630.1