12-14 September, 2011, Lucknow - Earth Science India

National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’
12-14 September, 2011, Lucknow
number of samples. More data of such kind are very important for numerical estimation
of particle optics which is major input for aerosol radiative forcing models.
SIMULATION CLIMATE USING A1B SCENARIO
G.P. Singh 1 and Jai Ho Oh 2
1 Department of Geophysics, Faculty of Science, Banaras Hindu University, Varanasi-221005
2 Department of environment and Atmospheric Sciences, Pukyong National University, Busan, South
Korea.
email: gpsinghbhu@hotmail.com
Detailed study of simulated temperature and precipitation have been done using a
very high resolution Icosahedral-Hexagonal grid point global model (hereafter referred
to as GME) run at 40km horizontal resolution under forcing prescribed from the A1B
emission scenario of the Intro-governmental Panel on Climate Change (IPCC, 2000).
We have focused only winter (December, January and February; DJF) and rainy (June,
July and August; JJA) seasons in three time slice experiments which can be considered
as (a) the present climate (1979–1983), (b) mid century climate (2041-2045) and (c) end
of century climate (2081-2085). Results indicated that the inland area of South America
and Australia will be warmest regions in winter while the Middle East Asia will be in
rainy seasons. High temperature zones (above 20°C) can be seen between 30S and 30N
during winter and 30S and 40N in rainy seasons. We have also focused the
accompanied difference in the precipitation in time slice experiments for the same
periods. Results indicate increasing trend in precipitation over large area of the globe, it
can be indicative of activated convection systems. This may help to understand
"seeding" of the tropical cyclone generations. These features may be responsible for
increasing the frequency of the cyclones over the North Atlantic Ocean, the North
Indian Ocean in the Middle of present century and over the North Atlantic Ocean and
the Indian Ocean in the end of present century. Based on modeling study, increasing
trend in temperature is very clear and high precipitation is found in smaller periods.
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