Hydroclimate Variations in Central and Monsoonal Asia over the Past 700 Years

Keyan Fang (), Fahu Chen and Asok K. Sen

Working Papers from eSocialSciences

Abstract: Hydroclimate variations since 1300 in central and monsoonal Asia and their interplay on interannual and interdecadal timescales are investigated using the tree-ring based Palmer Drought Severity Index (PDSI) reconstructions. Both the interannual and interdecadal variations in both regions are closely to the Pacific Decadal Oscillation (PDO). On interannual timescale, the most robust correlations are observed between PDO and hydroclimate in central Asia. Interannual hydroclimate variations in central Asia are more significant during the warm periods with high solar irradiance, which is likely due to the enhanced variability of the eastern tropical Pacific Ocean, the high-frequency component of PDO, during the warm periods.

Keywords: Interannual hydroclimate; variations; hydroclimate; cental; monsoonal Asia; Palmer Drought Severity Index (PDSI); Asia; Pacific; warm (search for similar items in EconPapers)
Date: 2016-03
Note: Institutional Papers
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