Greenhouse warming over Indian sub-continent |
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| Authors: | M Lal B Bhaskaran |
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| Institution: | (1) Centre for Atmospheric Sciences, Indian Institute of Technology, 110 016 New Delhi, India |
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| Abstract: | A hierarchy of climate models have been developed and applied to the problem of doubling the CO2 concentration in the atmosphere. Currently available general circulation models include the most complete treatment of the
global wanning and are capable of providing changes in several of the meteorological parameters in time scales of half a century
or even more. Much skill is gradually being achieved now for future climate simulations. In this paper, we have attempted
to describe the response of the National Center for Atmospheric Research Climate Community Model (NCAR CCM), whose performance
for northern hemispheric climate simulations was reported to be very satisfactory to Indian region. The seasonal (winter and
summer) changes in surface temperature, rainfall and soil moisture expected over the Indian sub-continent due to doubling
of CO2 in the atmosphere as inferred from model output statistics are discussed. A probable scenario for sea level rise along the
Indian coastline by the year 2030 AD as a result of ocean water’s expansion due to global warming is outlined. These projections
should not be treated as predictions of what is going to happen over the Indian sub-continent. Rather, they merely illustrate
to what extent we might be affected by the future climate change. |
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| Keywords: | Global warming climate models ocean’ s thermal expansion sea level rise climate change over Indian sub-continent |
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