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Simulation of Polar Antarctic trends: Influence of tropical SST
Author(s) -
Grassi Barbara,
Redaelli Gianluca,
Visconti Guido
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023804
Subject(s) - climatology , polar , southern hemisphere , sea surface temperature , polar vortex , troposphere , atmosphere (unit) , northern hemisphere , environmental science , circumpolar star , atmospheric sciences , climate model , geology , climate change , oceanography , meteorology , geography , physics , astronomy
The polar Antarctic atmosphere has been recently characterized by a progressive intensification of the circumpolar westerly winds, both in the stratospheric and tropospheric component. We simulate the response of the polar southern hemisphere atmosphere to a prescribed trend of oceanic equatorial temperature to demonstrate a possible link between the progressive warming of tropical sea surface temperature (SST) and Antarctic climate changes in the last decades. Model simulations produce an atmospheric response suggesting an influence of equatorial SST on polar dynamics, particularly during summer months.