Further evidences for the weakening relationship of Indian rainfall and ENSO over India
Further evidences for the weakening relationship of Indian rainfall and ENSO over India
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DOI：
10.1029/2004gl020259
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发表时间：
2004-07
影响因子：
5.2
通讯作者：
S. Sarkar;Ramesh P. Singh;M. Kafatos
中科院分区：
文献类型：
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作者：
S. Sarkar;Ramesh P. Singh;M. Kafatos
过去，为了了解印度季风和厄尔尼诺/南方涛动(ENSO)对印度大陆的影响，人们做出了许多努力。各种方法和对过去140年的数据集的分析表明，ENSO和印度降雨量之间主要是相反的关系。但近几十年来，人们观察到ENSO和印度降雨量之间的这种主要耦合作用有所减弱。本文分析了印度次大陆的降水趋势及其与ENSO的关系。我们的结果表明，在过去的二十年里，印度地区出现了较强的环流模式。我们还发现，近年来ENSO的影响有所增加，但由于这段时间印度上空存在较强的环流形势，因此对印度降水的影响不大。
Numerous efforts have been made in the past to understand the effect of Indian monsoon and El Niño/Southern Oscillation (ENSO) over the Indian continent. Various approaches and analysis of datasets covering the last 140 years have shown a dominantly inverse relationship between the ENSO and Indian rainfall. But this dominant coupling between the ENSO and Indian rainfall has been observed to weaken in recent decades. In the present paper, we have analyzed rainfall trend over the Indian sub‐continent and its relation with ENSO. Our results indicate a stronger circulation pattern over the Indian region in last two decades. We have also found that the effect of ENSO has increased in recent years but has failed to influence the Indian rainfall because of the stronger circulation pattern prevailing over India during this time.