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Assessing the Ability of Zonal δ 18 O Contrast in Benthic Foraminifera to Reconstruct Deglacial Evolution of Atlantic Meridional Overturning Circulation
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2019
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Source: Paleoceanography and Paleoclimatology, 34(5), 800-812
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Journal Title:Paleoceanography and Paleoclimatology
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Description:δ18O in foraminifera ( δ18Oc) is a useful proxy for density, and the strength of the Atlantic Meridional Overturning Circulation (AMOC) can be reconstructed by the zonal density contrast in the Atlantic. However, whether the deglacial zonal δ18Occontrast can represent the AMOC change is still unclear. δ18Occontrast across the Florida Straits has been hypothesized as a proxy for the AMOC evolution during the last deglaciation, but the strength of Florida Current could also be in fluenced by wind forcing. Here we examine the ability of the zonal δ18Occontrast to reconstruct AMOC in a deglacial model simulation. The model simulation suggests that the deglacial variation of the Florida Current strength isdominated by AMOC, with the wind effect on the variation of the Florida Current being negligible.
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Source:Paleoceanography and Paleoclimatology, 34(5), 800-812
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ISSN:2572-4517;2572-4525;
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Rights Information:Other
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Compliance:Library
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