Is Tropical Atlantic Variability driven by the North Atlantic Oscillation?

Details Is Tropical Atlantic Variability driven by the North Atlantic Oscillation? Is Tropical Atlantic Variability driven by the North Atlantic Oscillation?

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29m..31w&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 13, pp. 31-1, CiteID 1653, DOI 10.1029/2002GL014939

Physics

10

Global Change: Climate Dynamics (3309), Oceanography: General: Climate And Interannual Variability (3309)

Scientific paper

The role of the North Atlantic Oscillation (NAO) on the genesis of the Tropical Atlantic Variability (TAV) is studied in a coupled ocean-atmosphere general circulation model using two modeling approaches of partial coupling and partial blocking. It is found that the NAO is not a necessary precondition for the genesis of the TAV although it can enhance climate variability in the tropical North Atlantic significantly via extratropical-tropical teleconnections. Instead, local ocean-atmosphere interaction plays a dominant role for the full development of TAV. Our results do not rule out the possible influence of ENSO on TAV.

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