Response of the African monsoon to orbital forcing and ocean feedbacks in the middle Holocene

被引：322
|
作者：
Kutzbach, JE
Liu, Z
机构：
[1] Center for Climatic Research, University of Wisconsin, Madison
来源：
SCIENCE | 1997年 / 278卷 / 5337期
关键词：
D O I：
10.1126/science.278.5337.440
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Simulations with a climate model that asynchronously couples the atmosphere and the ocean showed that the increased amplitude of the seasonal cycle of insolation in the Northern Hemisphere 6000 years ago could have increased tropical Atlantic sea surface temperatures in late summer. The simulated increase in sea surface temperature and associated changes in atmospheric circulation enhanced the summer monsoon precipitation of northern Africa by more than 25 percent, compared with the middle Holocene simulation with prescribed modern sea surface temperatures, and provided better agreement with paleorecords of enhanced monsoons.
引用
收藏
页码：440 / 443
页数：6
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