Reference:Lea et al. 2003

From Global Warming Art

Lea, D.W., D.K. Pak, L.C. Peterson, and K.A. Hughen (2003). "Synchroneity of tropical and high-latitude Atlantic temperatures over the last glacial termination". Science 301 (5638): 1361-1364. DOI:10.1126/science.1088470.

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 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 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." 

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