Onset of climate change at Last Glacial-Holocene transition: Role of the tropical Pacific

Sant, Dhananjay A and Rangarajan, Govindan (2002) Onset of climate change at Last Glacial-Holocene transition: Role of the tropical Pacific. In: Current Science, 83 (11). pp. 1398-1402.

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Abstract

We study palaeoclimatic records from various sites spread around the earth, focusing on the start of the last glacial-interglacial transition. The warming, as recorded in the $\delta^{18}O$ record started first in the tropics, then propagated to the Antarctic and then finally to the Arctic. Our analysis of the data suggests that it took about 7.6 ka for onset of climate change to propagate globally. We propose that the tropical Pacific played a major role in initiating the warming in the tropics. We discuss mechanisms that could have transported this heat from the tropics to Antarctica and then to the Arctic during transition to the interglacial.

Item Type:	Journal Article
Publication:	Current Science
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Theoretical Studies (Ceased to exist at the end of 2003) Division of Physical & Mathematical Sciences > Mathematics
Date Deposited:	24 Oct 2007
Last Modified:	19 Sep 2010 04:40
URI:	http://eprints.iisc.ac.in/id/eprint/12269

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