Eight centuries of North Atlantic Ocean atmosphere variability

Publication Type  Journal Article
Year of Publication  1999
Authors  Black, D. E.; Peterson, L. C.; Overpeck, J. T.; Kaplan, A.; Evans, M. N.; Kashgarian, M.
Journal Title  Science
Volume  286
Issue  5445
Pages  1709-1713
Journal Date  Nov 26
ISBN Number  0036-8075
Accession Number  ISI:000083912200030
Key Words  sea-surface temperature; tropical atlantic; climate-change; last deglaciation; greenland sea; united-states; cariaco basin; ice-age; circulation; model

Climate in the tropical North Atlantic is controlled Largely by variations in the strength of the trade winds, the position of the Intertropical Convergence Zone, and sea surface temperatures. A high-resolution study of Caribbean sediments provides a subdecadally resolved record of tropical upwelling and trade wind Variability spanning the past 825 years. These results confirm the importance of a decadal (12- to 13-year) mode of Atlantic variability believed to be driven by coupled tropical ocean-atmosphere dynamics. Although a well-defined interdecadal mode of variability does not appear to be characteristic of the tropical Atlantic, there is evidence that century-scale variability is substantial. The tropical Atlantic may also have been involved in a major shift in Northern Hemisphere climate variability that took place about 700 years ago.


259UKTimes Cited:82Cited References Count:58

URL  <Go to ISI>://000083912200030