Role of equatorial Indian Ocean convection on the Indian summer monsoon

被引：0

作者：

Murali, Boddepalli ^{[1
]}

Ravichandran, M. ^{[2
]}

Girishkumar, M. S. ^{[1
]}

Bharathi, G. ^{[3
]}

机构：

[1] Indian Natl Ctr Ocean Informat Serv INCOIS, Hyderabad 500090, India

[2] Natl Ctr Antarctic Ocean Res, Vasco Da Gama 403804, Goa, India

[3] Andhra Univ, Dept Meteorol & Oceanog, Visakhapatnam 530003, Andhra Pradesh, India

来源：

MAUSAM | 2021年 / 72卷 / 02期

关键词：

Summer monsoon; Equatorial Indian Ocean; convection; North Indian Ocean; Synoptic systems; PREDICTABILITY; OSCILLATIONS; VARIABILITY; BAY;

D O I：

暂无

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The Summer Monsoon is the life line of millions of people as well as for the biosphere of continental India. It replenishes the in-land water sources with fresh rain water. In this study we have discussed about the relation between the All India summer monsoon rainfall and the frequency of atmospheric convection processes over the equatorial Indian Ocean. We have noticed a signature of monsoon over equatorial Indian Ocean which reflecting the variation of summer monsoon rainfall over continental India. A significant change in the signature of monsoon is observed during a drought monsoon and a good monsoon over the continental India. It is also observed that the role of Equatorial Indian Ocean (EIO) convection and synoptic systems over Northern Indian Ocean (NIO) with the continental India rainfall. An intraseasonal biweekly signal merging with monthly signal and forming cumulative signal of high amplitude which results a poor monsoon condition over continental India. The consecutive occurrence of biweekly and monthly individual signals leading to a good monsoon rainfall condition over continental India.

引用

页码：457 / 462

页数：6

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