Synchroneity of tropical and high-latitude Atlantic temperatures over the last glacial termination

被引：347

作者：

Lea, DW ^{[1
]}

Pak, DK

Peterson, LC

Hughen, KA

机构：

[1] Univ Calif Santa Barbara, Dept Geol Sci, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA

[3] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA

[4] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA

来源：

SCIENCE | 2003年 / 301卷 / 5638期

关键词：

D O I：

10.1126/science.1088470

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：

A high-resolution western tropical Atlantic sea surface temperature (SST) record from the Cariaco Basin on the northern Venezuelan shelf, based on Mg/Ca values in surface-dwelling planktonic foraminifera, reveals that changes in SST over the last glacial termination are synchronous, within +/-30 to +/-90 years, with the Greenland Ice Sheet Project 2 air temperature proxy record and atmospheric methane record. The most prominent deglacial event in the Cariaco record occurred during the Younger Dryas time interval, when SSTs dropped by 3degrees to 4degrees C. A rapid southward shift in the atmospheric intertropical convergence zone could account for the synchroneity of tropical temperature, atmospheric methane, and high-latitude changes during the Younger Dryas.

引用

页码：1361 / 1364

页数：4

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