Global surface temperature signals in pine ring-width chronologies from southern monsoon Asia

Publication Type  Journal Article
Year of Publication  2005
Authors  Buckley, B. M.; Cook, B. I.; Bhattacharyya, A.; Dukpa, D.; Chaudhary, V.
Journal Title  Geophysical Research Letters
Volume  32
Issue  20
Pages  -
Journal Date  Oct 19
ISBN Number  0094-8276
Accession Number  ISI:000232828300003
Key Words  tree-rings; eurasian snow cover; summer monsoon; indian monsoon; climate variability; northern thailand; western himalaya; time-series; rainfall; pacific; sea; tree-rings

We analyze Pinus ring width chronologies from three locations across monsoon Asia (Bhutan, India, and Thailand) where climate is dominated by the southwest monsoon in the boreal summer. We compare these records to global surface temperatures for the past 150 years, shifting the correlations through three seasonal averages: two seasons preceding the monsoon (Dec-Feb and Mar May), and the monsoon season itself (Jun-Sep). Clear patterns emerge for each of the chronologies that highlight links to areas of known influence on the Asian monsoon: the Indian Ocean, the tropical eastern Pacific Ocean, and the high-latitude Asian landmass. The Thai and Indian chronologies are from the same species (P. merkusii), and show a strong correlation with tropical Indian and Pacific Ocean bands. The Bhutan chronology (P. Wallichiana) is most strongly linked to climate over the north Pacific and Asian landmass. All of these correlations are strongest in seasons preceding the summer monsoon.


977UITimes Cited:1Cited References Count:32

URL  <Go to ISI>://000232828300003
DOI  Doi 10.1029/2005gl023745