Climatic potential of delta O-18 of Abies spectabilis from the Nepal Himalaya

Sano, Masaki and Sheshshayee, MS and Managave, S and Ramesh, R and Sukumar, R and Sweda, Tatsuo (2010) Climatic potential of delta O-18 of Abies spectabilis from the Nepal Himalaya. In: Dendrochronologia, 28 (2). pp. 93-98.

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Abstract

A 50-year tree-ring delta O-18 chronology of Abies spectabilis growing close to the tree line (3850 m asl) in the Nepal Himalaya is established to explore its dendroclimatic potential. Response function analysis with ambient climatic records revealed that tree-ring delta O-18 is primarily governed by rainfall during the monsoon season (June September), and the regression model accounts for 35% of the variance in rainfall. Extreme dry years identified in instrumental weather data are detected in the delta O-18 chronology. Further, tree-ring delta O-18 is much more sensitive to rainfall fluctuations than other tree-ring parameters such as width and density typically used in dendroclimatology. Correlation analyses with Nino 3.4 SST reveal time-dependent behavior of ENSO-monsoon relationships. (C) 2009 Elsevier GmbH. All rights reserved.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Isotope dendroclimatology; Monsoon; ENSO
Department/Centre:	Division of Biological Sciences > Centre for Ecological Sciences
Date Deposited:	02 Jun 2010 05:14
Last Modified:	19 Sep 2010 06:07
URI:	http://eprints.iisc.ernet.in/id/eprint/28059

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