Physics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.322..248h&link_type=abstract
Nature, Volume 322, Issue 6076, pp. 248-251 (1986).
Physics
14
Scientific paper
The dramatic global climate variability during the period from 1982 to 1984 has presented a unique opportunity to diagnose and interpret the role of air/sea interactions over the tropical oceans. Recent reviews have summarized the observational and numerical evidence for air/sea interactions over the equatorial Pacific Ocean associated with the El Niño/Southern Oscillation (ENSO) phenomenon1-3. Here we present details of the atmospheric conditions in the Atlantic sector between 1983 and 1984. During the latter half of 1983, the atmospheric circulation over the equatorial Atlantic underwent a dramatic reversal: surface trade winds were substantially reduced; surface pressurs decreased; and cloudiness and rainfall increased over the ocean and adjacent regions of north-east Brazil. These regional changes over the equatorial Atlantic coincided with planetary-scale adjustments in the tropical atmosphere. While the atmospheric circulation over the tropical Pacific was experiencing an extraordinary departure from normal during 1983, as evidenced by a reversal in direction of the surface winds, the circulation over the Atlantic was in a building-up phase with stronger than usual surface winds. As the atmospheric circulation over the Pacific returned to normal during the latter half of 1983, the trade winds over the Atlantic relaxed.
Horel John D.
Kagano Mary T.
Kousky Vernon E.
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