In spite of the rise in atmospheric CO2 concentration of about 70 parts per million by volume and in global temperatures of about 0.50 degree Celsius over the last 6 decades, the All India Rainfall index does not yet show the expected increase in rainfall.
The reviewers Andrew Turner from the Department of Meteorology at the University of Reading and H. Annamalai from the International Pacific Research Center at the University of Hawaii at Manoa give several reasons for why the region’s observed rainfall has not yet increased, among them are inconsistent rainfall observations, decadal variability of the monsoon, the effects of aerosols resulting from industrialization, and land-use changes.
Regional projections for devastating droughts and floods--which are most meaningful for residents living in South Asia-- are still beyond the reach of current climate models, according to the reviewers’ detailed analyses of the present state of research.
The review appeared in the June 24 online issue Nature Climate Change.
ANI
First Published: Monday, June 25, 2012, 12:30
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