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

David W. Lea, Dorothy K. Pak, Larry C Peterson, Konrad A. Hughen

Research output: Contribution to journalArticle

306 Citations (Scopus)

Abstract

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 turface-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 3° to 4°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.

Original languageEnglish (US)
Pages (from-to)1361-1364
Number of pages4
JournalScience
Volume301
Issue number5638
DOIs
StatePublished - Sep 5 2003

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Temperature
Methane
Oceans and Seas
Foraminifera
Greenland
Ice Cover
Proxy
Air

ASJC Scopus subject areas

  • General

Cite this

Synchroneity of tropical and high-latitude Atlantic temperatures over the last glacial termination. / Lea, David W.; Pak, Dorothy K.; Peterson, Larry C; Hughen, Konrad A.

In: Science, Vol. 301, No. 5638, 05.09.2003, p. 1361-1364.

Research output: Contribution to journalArticle

Lea, David W. ; Pak, Dorothy K. ; Peterson, Larry C ; Hughen, Konrad A. / Synchroneity of tropical and high-latitude Atlantic temperatures over the last glacial termination. In: Science. 2003 ; Vol. 301, No. 5638. pp. 1361-1364.
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