High-Latitude Forcing of the South American Summer Monsoon During the Last Glacial

被引：183

作者：

Kanner, Lisa C. ^{[1
]}

Burns, Stephen J. ^{[1
]}

Cheng, Hai ^{[2
,3
]}

Edwards, R. Lawrence ^{[3
]}

机构：

[1] Univ Massachusetts, Dept Geosci, Amherst, MA 01002 USA

[2] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China

[3] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA

来源：

SCIENCE | 2012年 / 335卷 / 6068期

基金：

美国国家科学基金会;

关键词：

CLIMATE VARIABILITY; MILLENNIAL-SCALE; ATMOSPHERIC CH4; STABLE-ISOTOPES; ATLANTIC-OCEAN; GREENLAND; PRECIPITATION; ANTARCTICA; DELTA-O-18;

D O I：

10.1126/science.1213397

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The climate of the Last Glacial period (10,000 to 110,000 years ago) was characterized by rapid millennial-scale climate fluctuations termed Dansgaard/Oeschger (D/O) and Heinrich events. We present results from a speleothem-derived proxy of the South American summer monsoon (SASM) from 16,000 to 50,000 years ago that demonstrate the occurrence of D/O cycles and Heinrich events. This tropical Southern Hemisphere monsoon reconstruction illustrates an antiphase relationship to Northern Hemisphere monsoon intensity at the millennial scale. Our results also show an influence of Antarctic millennial-scale climate fluctuations on the SASM. This high-resolution, precisely dated, tropical precipitation record can be used to establish the timing of climate events in the high latitudes of the Northern and Southern Hemispheres.

引用

页码：570 / 573

页数：4

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