Impact of Atlantic multidecadal oscillations on India/Sahel rainfall and Atlantic hurricanes

被引：709

作者：

Zhang, Rong ^{[1
]}

Delworth, Thomas L. ^{[1
]}

机构：

[1] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2006年 / 33卷 / 17期

关键词：

D O I：

10.1029/2006GL026267

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Prominent multidecadal fluctuations of India summer rainfall, Sahel summer rainfall, and Atlantic Hurricane activity have been observed during the 20th century. Understanding their mechanism(s) will have enormous social and economic implications. We first use statistical analyses to show that these climate phenomena are coherently linked. Next, we use the GFDL CM2.1 climate model to show that the multidecadal variability in the Atlantic ocean can cause the observed multidecadal variations of India summer rainfall, Sahel summer rainfall and Atlantic Hurricane activity ( as inferred from vertical wind shear changes). These results suggest that to interpret recent climate change we cannot ignore the important role of Atlantic multidecadal variability.

引用

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