Abstract
Abstract The Younger Dryas event is one of the most abrupt climate changes observed in Northern Hemisphere paleoclimatic records. The possible driver, despite being proposed by a number of authors, is still under vigorous debate with no scientific consensus. Most studies investigated the AMOC, with its shutdown being responsible for a reduction of heat and salt in the North Atlantic. However, by reanalyzing and comparing the paleoclimatic records from the northern and southern sites of the Brazilian cape, we consider a significant decrease of the North Brazil Current to be the main cause for the heat and salt transport to high latitudes through coupled effects of the Brazilian promontory and a southward shift of the Equatorial Currents in the equatorial Atlantic. We obtained the δ18O, δ13C, TOC, CaCO3 records at the northern and southern sites from the PANGAEA database. The results demonstrate a pronounced antiphased variation of the paleoclimatic records between the northern and southern sites during the YD, thus suggesting a significant southward migration of the Equatorial Currents.
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