An orbitally driven tropical source for abrupt climate change

被引：1
|
作者：
Clement, AC [1 ]
Cane, MA [1 ]
Seager, R [1 ]
机构：
[1] Lamont Doherty Earth Observ, Palisades, NY 10964 USA
来源：
JOURNAL OF CLIMATE | 2001年 / 14卷 / 11期
关键词：
D O I：
10.1175/1520-0442(2001)014<2369:AODTSF>2.0.CO;2
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Paleoclimatic data are increasingly showing that abrupt change is present in wide regions of the globe. Here a mechanism for abrupt climate change with global implications is presented. Results from a tropical coupled ocean-atmosphere model show that, under certain orbital configurations of the past, variability associated with El Nino-Southern Oscillation (ENSO) physics can abruptly lock to the seasonal cycle for several centuries, producing a mean sea surface temperature (SST) change in the tropical Pacific that resembles a La Nina. It is suggested that this change in SST would have a global impact and that abrupt events such as the Younger Dryas may be the outcome of orbitally driven changes in the tropical Pacific.
引用
收藏
页码：2369 / 2375
页数：7
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