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contributor authorMuñoz, Ernesto
contributor authorWeijer, Wilbert
contributor authorGrodsky, Semyon A.
contributor authorBates, Susan C.
contributor authorWainer, Ilana
date accessioned2017-06-09T17:04:34Z
date available2017-06-09T17:04:34Z
date copyright2012/07/01
date issued2012
identifier issn0894-8755
identifier otherams-79014.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4221748
description abstracthis study analyzes important aspects of the tropical Atlantic Ocean from simulations of the fourth version of the Community Climate System Model (CCSM4): the mean sea surface temperature (SST) and wind stress, the Atlantic warm pools, the principal modes of SST variability, and the heat budget in the Benguela region. The main goal was to assess the similarities and differences between the CCSM4 simulations and observations. The results indicate that the tropical Atlantic overall is realistic in CCSM4. However, there are still significant biases in the CCSM4 Atlantic SSTs, with a colder tropical North Atlantic and a hotter tropical South Atlantic, that are related to biases in the wind stress. These are also reflected in the Atlantic warm pools in April and September, with its volume greater than in observations in April and smaller than in observations in September. The variability of SSTs in the tropical Atlantic is well represented in CCSM4. However, in the equatorial and tropical South Atlantic regions, CCSM4 has two distinct modes of variability, in contrast to observed behavior. A model heat budget analysis of the Benguela region indicates that the variability of the upper-ocean temperature is dominated by vertical advection, followed by meridional advection.
publisherAmerican Meteorological Society
titleMean and Variability of the Tropical Atlantic Ocean in the CCSM4
typeJournal Paper
journal volume25
journal issue14
journal titleJournal of Climate
identifier doi10.1175/JCLI-D-11-00294.1
journal fristpage4860
journal lastpage4882
treeJournal of Climate:;2012:;volume( 025 ):;issue: 014
contenttypeFulltext


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