Changes in the south Asian monsoon low level jet during recent decades and its role in the monsoon water cycle

被引：24

作者：

Aneesh, S. ^{[1
]}

Sijikumar, S. ^{[1
]}

机构：

[1] Vikram Sarabhai Space Ctr, Space Phys Lab, Trivandrum 695022, Kerala, India

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2016年 / 138卷

关键词：

South Asian monsoon; Low level jet; Global warming; SUMMER MONSOON;

D O I：

10.1016/j.jastp.2015.12.009

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

June-September mean wind at 850 hPa from ERA-Interim, MERRA and NCEP2 reanalyses shows an increasing trend in the south Asian monsoon Low Level Jet (LLJ) during 1980-2014. In the sub-seasonal scale, the LLJ during July and September exhibits increasing trend, while August shows a decreasing trend. Lesser changes in surface pressure over heat low region and weaker Bay of Bengal convection lead to weakening of LLJ during August while an intense heat low during September results stronger LLJ. The associated moisture transport changes affect the monsoon hydrological cycle with decreasing precipitation during August and increasing precipitation during September. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：47 / 53

页数：7

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