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Simulated changes of the Indian summer monsoon under enhanced greenhouse gas conditions in a global time‐slice experiment
Author(s) -
May Wilhelm
Publication year - 2002
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 - 10.1029/2001gl013808
Subject(s) - monsoon , climatology , environmental science , greenhouse gas , monsoon of south asia , gcm transcription factors , climate change , atmospheric sciences , atmospheric circulation , global warming , east asian monsoon , tropical monsoon climate , general circulation model , geology , oceanography
In this study the possible change of the Indian summer monsoon associated with the anticipated increase in the greenhouse gases concentrations is investigated. This is done on the basis of a time‐slice experiment performed with the ECHAM4 atmospheric GCM at a high horizontal resolution of T106. The first time‐slice (1970–1999) represents the present‐day climate and the second one (2060–2089) the future climate. The time‐slice experiment predicts an intensification of the rainfall in the Indian region during the monsoon season due to the general warming, while the future changes in the large‐scale flow indicate a weakening of the monsoon circulation. The increase of the regional rainfall is related to an intensification of the atmospheric moisture transport into the Indian region.