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Solar influence on the Indian Ocean Monsoon through dynamical processes
Author(s) -
Kodera Kunihiko
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl020928
Subject(s) - monsoon , troposphere , climatology , precipitation , indian ocean , stratosphere , upwelling , convection , atmospheric sciences , east asian monsoon , environmental science , monsoon of south asia , geology , oceanography , meteorology , geography
The result of paleoclimate studies on the relationship between the Indian monsoon and solar activity, inferred from the analysis of stalagmites in Oman, is confirmed by using a modern meteorological dataset from 1958–1999. The present result suggests that the solar influence on monsoon activity is not due to a change in radiative heating in the troposphere but, rather, originates from the stratosphere through modulation of the upwelling in the equatorial troposphere, which produces a north‐south seesaw of convective activity over the Indian Ocean sector during summer. Higher precipitation over Arabia and India, thus, occurs during high solar activity.