| PALEOCEANOGRAPHY |
Arabian Sea Holocene G. bulloides Data
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Gupta, A.K., D.M. Anderson, and J.T. Overpeck. 2003. Abrupt changes in the Asian southwest monsoon during the Holocene and
their links to the North Atlantic Ocean. Nature 421:354-357.
| Data Coverage |
North: 18.05 * South: 18.05 |
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West: 57.6 * East: 57.6 |
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Altitude: -808 m |
Start Year: 9449 14C yr BP
* End Year: 560 14C yr BP
Data: Please Cite Data Contributors!
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Summary: During the last ice age, the Indian Ocean southwest monsoon exhibited abrupt changes that were closely correlated with millennial-scale
climate events in the North Atlantic region, suggesting a mechanistic link. In the Holocene epoch, which had a more stable
climate, the amplitude of abrupt changes in North Atlantic climate was much smaller, and it has been unclear whether these
changes are related to monsoon variability. Here we present a continuous record of centennial-scale monsoon variability throughout
the Holocene from rapidly accumulating and minimally bioturbated sediments in the anoxic Arabian Sea. Our monsoon proxy record
reveals several intervals of weak summer monsoon that coincide with cold periods documented in the North Atlantic region-including
the most recent climate changes from the Medieval Warm Period to the Little Ice Age and then to the present. We therefore
suggest that the link between North Atlantic climate and the Asian monsoon is a persistent aspect of global climate.
More Info on Paleoceanography Data |
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Parameters: calendar years before 1950AD; Globigerina bulloides percent
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Complete XML Record: noaa-ocean-2578
(Last Revised: 2007-12-21 )
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DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
325 Broadway, E/CC23
Boulder, CO 80305
USA
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| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
Phone: 303-497-6280
Fax: 303-497-6513
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