Open AccessIncrease in the pre‐monsoon rainfall over the Indian summer monsoon region
Author(s) -
Sathiyamoorthy V.,
Shukla Bipasha Paul,
Pal P.K.
Publication year - 2010
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.302
Subject(s) - climatology , monsoon , precipitation , bay , environmental science , zonal and meridional , barometer , bengal , period (music) , atmospheric sciences , oceanography , geography , geology , meteorology , physics , acoustics
Examination of the Global Precipitation Climatology Project (GPCP) and Climate Prediction Center (CPC) Merged Analysis of Precipitation (CMAP) rainfall datasets, both available for the past 31 years (1979–2009), suggests that rainfall has increased considerably over the pre‐monsoon rainfall belts of the Bay of Bengal (BoB) and Southeast Arabian Sea (SEA) during May. The rainfall rate has increased by 83.9% (94.5%) over SEA and 54.6% (19.6%) over BoB in the GPCP (CMAP) dataset during the study period. During the study period, the atmospheric temperature has increased over north/northwestern parts of the Indian summer monsoon region in May, which has possibly caused more rain by enhancing the meridional pressure gradient. Copyright © 2010 Royal Meteorological Society