Previous Abstract | Back to Abstracts Page | Next Abstract
Multi-decadal Simulation of Atlantic Ocean Climate Variability Driven by Realistic High-Frequency Atmospheric Reanalyses
Z.D. Garraffo, G.R. Halliwell, L.T. Smith, G. Peng, E.P. Chassignet
University of Miami. RSMAS-MPO
(Abstract received 07/16/2007 for session X)
ABSTRACT
Atlantic Ocean climate variability is simulated from 1948-2003 using the HYbrid Coordinate Ocean Model (HYCOM) to study the ocean response to atmospheric variability associated with important climate modes such as the North Atlantic Oscillation and the Atlantic Multi-Decadal Oscillation. The initial simulation at 1/3 degree horizontal resolution, was driven by six-hourly surface fields obtained from the NCEP/NCAR (before 1979) and NCEP/DOE AMIP-II (1979-forward) atmospheric reanalyses. The salty Mediterranean overflow layer is maintained by using the Price-Yang-Baringer boundary model in the Gulf of Cadiz. Results are compared to observations such as sea surface temperature variations, western boundary current transport, Gulf Stream front location, transport index, deep transport. The model reproduces the SST anomaly pattern and the subtropical and subpolar gyre responses associated with the NAO. The Florida Current transport and the meridional overturning circulation are correlated with the NAO.
Previous Abstract | Back to Abstracts Page | Next Abstract
2007 LOM Workshop, Bergen, Norway, August 20-22, 2007