The relationship between Indian Ocean sea-surface temperature and east African rainfall

被引：107

作者：

Black, E ^{[1
]}

机构：

[1] Univ Reading, Dept Meteorol, Ctr Global Atmospher Modelling, Reading RG6 6BB, Berks, England

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2005年 / 363卷 / 1826期

关键词：

Africa; ENSO; Indian Ocean; rainfall; Indian Ocean dipole;

D O I：

10.1098/rsta.2004.1474

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：

Knowledge of the processes that control East African rainfall is essential for the development of seasonal forecasting systems, which may mitigate the effects of flood and drought. This study uses observational data to unravel the relationship between the Indian Ocean Dipole (IOD), the El Nino Southern Oscillation (ENSO) and rainy autumns in East Africa. Analysis of sea-surface temperature data shows that strong East African rainfall is associated with warming in the Pacific and Western Indian Oceans and cooling in the Eastern Indian Ocean. The resemblance of this pattern to that which develops during IOD events implies a link between the IOD and strong East African rainfall. Further investigation suggests that the observed teleconnection between East African rainfall and ENSO is a manifestation of a link between ENSO and the IOD.

引用

页码：43 / 47

页数：5

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