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

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National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow POLAR REGIONS AND THE EARTH’S CLIMATE Prem Chand Pandey Center for Oceans Rivers Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302. email:pcpandey@coral.iitkgp.ernet.in Polar regions are vital for earth’s climate and its sustainability. The vast continental ice sheet if melts, has the potential to raise global sea level by several meters. Sea ice in both Polar Regions provides a link to the deep thermohaline circulation and the surface circulation thus invigorating the entire ocean ecosystem. The variability of sea ice extent has the influence on the fluxes between ocean and atmosphere and hence modifies the circulation patterns. The ozone at Antarctica hole discovered by Joe Farman of British Antarctic Survey has alarmed the entire world about the effect of chemical pollutants in our earth’s environment and the subsequent remedial steps taken globally through Montreal Protocol is an example of the importance of polar regions. Recent International Polar Year (2007-2009) which has just been concluded has given new impetus to Polar programmes globally. India has an ambitious polar programme with a dedicated centre at Goa focusing on Polar Regions which also includes the studies of the southern ocean. This has provided unique platform to many national and international scientists to pursue polar research in various domains of science. Ice cores and sediment cores in the southern ocean provides climate history. We will review the development related to earth’s climate and the polar regions. 120
National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow TREE-RING VARIATION IN TEAK (TECTONA GRANDIS) FROM CENTRAL INDIA IN RELATION TO MOISTURE AND PALMER DROUGHT SEVERITY INDEX Somaru Ram Indian Institute of Tropical Meteorology, Pune 411 008 email: somaru@tropmet.res.in I have developed the ring-width index chronologies of teak trees (Tectona grandis) from a moisture stressed area of central india. The Correlation analysis indicated that moisture index (MI) and Palmer Drought Severity Index (PDSI) showed better performance rather than same year rainfall over the region. Tree-ring variations were most correlated positively with PDSI and moisture index during different seasons as compared to rainfall over the region. This study shows that the moisture availability during the growing season has a significant role in development of annual growth rings. MANAGEMENT OF SOIL CARBON SEQUESTRATION IN SOIL RECLAIMED MANGANESE MINE LAND BY PHYTOMITIGATION Asha A. Juwarkar, Priyanka Jain, Vikrant Aher, S.K. Singh and P.R. Thawale * National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, Maharastra *email: pr_thawale@neeri.res.in The article explores the reasons for the observed increase in very recent atmospheric carbon dioxide concentration. The fall of atmospheric carbon dioxide over the last half billion years and the very recent inverse correlation of atmospheric oxygen response support the well documented growth response of plants to elevated carbon dioxide. This confirms a dynamic equilibrium that adjusts the uptake of carbon sinks in response to carbon dioxide availability, and suggests that the increase of atmospheric carbon dioxide requires more than a minor rise in carbon dioxide input. Carbon emission is supposed to be the strongest factor for global warming. Removing atmospheric carbon and storing it in the terrestrial biosphere is one of the cost-effective options, to compensate greenhouse gas emission. Millions of acres of abandoned mine land throughout the world, if restored and converted into vegetative land, would solve two major problems of global warming and generation of degraded 121
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12-14 September, 2011, Lucknow - Earth Science India

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