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Dr Dileep Kumar elected INSA Fellow
Indian National Science Academy elects scientists of eminence based on their contributions in different fields of science as 'Fellows'. This is a very prestigious honour to an individual in India for his/her contribution.
Dr M. Dileep Kumar
, working as the Scientist EII in Chemical Oceanography Division has been recently elected as the INSA fellow. INSA hounoured Dr Dileep Kumar for his pioneering contribution to the understanding of biogeochemical cycles of carbon and sulphur in the Northern Indian Ocean. His studies established that the Bay of Bengal acts as an important seasonal sink while the Arabian Sea is a perennial source of atmospheric carbon dioxide. His research also revealed non-conservative behaviour of dissolved organic carbon and its strong regional variability in the Arabian Sea, and different behaviour of transparent exopolymer particles: fast scavenged by mineral ballast inn the Bay of Bengal but are effectively recycled in the Arabian Sea. These results brought to light the contrasting mechanisms of carbon cycling between the neighbouring Indian Seas. He identified grazer cycles to be very important in the internal cycling carbon in the Arabian Sea and its atmospheric emission. His extensive investigations on dimethyl sulphide (DMS, an anti-greenhouse gas) species established the occurrence of dimethylsulphoniopropionate in marine aerosols that contradicts the popular belief of sulphur efflux to atmosphere occurs only through gaseous DMS emission. This finding will have a significant impact on the atmospheric sulphur budget. The results have clearly shown a carbon-sulphur linkage through the coupling of phytoplankton-grazers. He is currently doing research in Japan at Ocean Research Institute, Tokyo at the invitation of Japan Society for the Promotion of Science, Tokyo.
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