Increase in the Asian SW Monsoon During the Past Four Centuries

World Data Center for Paleoclimatology, NCDC Paleoclimatology Branch

PALEOCEANOGRAPHY

Increase in the Asian SW Monsoon During the Past Four Centuries

Anderson, D.M., J.T. Overpeck, and A.K. Gupta. 2002. Increase in the Asian SW monsoon during the past four centuries. Science 297:5581.

Data Coverage	North: 18.23 * South: 18.22
	West: 57.6 * East: 57.68
	Altitude: -698 m

Start Year: 897 14C yr BP * End Year: -36 14C yr BP

Data: Please Cite Data Contributors!

  anderson2002
  rc2730-tab.txt
  rc2735-tab.txt

Summary:

Climate reconstructions reveal unprecedented warming in the past century; however, little is known about trends in aspects such as the monsoon. We reconstructed the monsoon winds for the past 1000 years using fossil Globigerina bulloides abundance in box cores from the Arabian Sea and found that monsoon wind strength increased during the past four centuries as the Northern Hemisphere warmed. We infer that the observed link between Eurasian snow cover and the southwest monsoon persists on a centennial scale. Alternatively, the forcing implicated in the warming trend (volcanic aerosols, solar output, and greenhouse gases) may directly affect the monsoon. Either interpretation is consistent with the hypothesis that the southwest monsoon strength will increase during the coming century as greenhouse gas concentrations continue to rise and northern latitudes continue to warm.
More Info on Paleoceanography Data

Parameters:

Coarse fraction percent (>150 micron); calendar years before 1950AD; Depth correlated to RC2730 (cm); Globigerina bulloides percent; Calcium Carbonate percent

Complete XML Record:

noaa-ocean-2567 (Last Revised: 2007-12-21 )

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