Influence of the intertropical convergence zone on the East Asian monsoon

Gergana Yancheva, Norbert R. Nowaczyk, Jens Mingram, Peter Dulski, Georg Schettler, Jörg F. W. Negendank, Jiaqi Liu, Daniel M. Sigman, Larry C. Peterson and Gerald H. Haug ()
Additional contact information
Gergana Yancheva: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Norbert R. Nowaczyk: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Jens Mingram: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Peter Dulski: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Georg Schettler: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Jörg F. W. Negendank: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg
Jiaqi Liu: Chinese Academy of Sciences
Daniel M. Sigman: Princeton University
Larry C. Peterson: University of Miami
Gerald H. Haug: GeoForschungsZentrum (GFZ), Section 3.3, Telegrafenberg

Nature, 2007, vol. 445, issue 7123, 74-77

Abstract: Climate swings A palaeoclimate record spanning the past 16,000 years with nearly annual time resolution has been obtained from Lake Huguang Maar in China. The magnetic properties and titanium content of the lake sediments are thought to reflect changes in the East Asian winter monsoon strength, thus providing a complement to palaeoclimate archives that record the strength of the rain-bearing summer monsoon. The records point to an anti-correlation between winter and summer monsoon strength, best explained by migration of the intertropical convergence zone (ITCZ), a belt of low-pressure air at the Equator. Interestingly, the decline of China's Tang dynasty and the Mayan civilization broadly coincide with drought periods recorded in Lake Huguang Maar and Cariaco basin sediments, respectively. Did major shifts in the position of the ITCZ catalyse simultaneous events in civilizations on opposite sides of the Pacific Ocean?

Date: 2007
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DOI: 10.1038/nature05431

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