Climatic potential of δ18O of Abies spectabilis from the Nepal Himalaya

Masaki Sano, M. S. Sheshshayee, S. Managave, R. Ramesh, R. Sukumar, Tatsuo Sweda

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21 Citations (Scopus)

Abstract

A 50-year tree-ring δ18O 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 δ18O 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 δ18O chronology. Further, tree-ring δ18O is much more sensitive to rainfall fluctuations than other tree-ring parameters such as width and density typically used in dendroclimatology. Correlation analyses with Niño 3.4 SST reveal time-dependent behavior of ENSO-monsoon relationships.

Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalDendrochronologia
Volume28
Issue number2
DOIs
Publication statusPublished - 2010
Externally publishedYes

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Keywords

  • ENSO
  • Isotope dendroclimatology
  • Monsoon

ASJC Scopus subject areas

  • Ecology
  • Plant Science

Cite this

Sano, M., Sheshshayee, M. S., Managave, S., Ramesh, R., Sukumar, R., & Sweda, T. (2010). Climatic potential of δ18O of Abies spectabilis from the Nepal Himalaya. Dendrochronologia, 28(2), 93-98. https://doi.org/10.1016/j.dendro.2009.05.005