Show simple item record

dc.contributor.authorTravis-Taylor, L.
dc.contributor.authorMedina-Elizalde, M.
dc.contributor.authorKarmalkar, A.V.
dc.contributor.authorPolanco-Martinez, J.
dc.contributor.authorSerrato Marks, G.
dc.contributor.authorBurns, S.
dc.contributor.authorLases-Hernández, F.
dc.contributor.authorMcGee, D.
dc.date.accessioned2024-02-23T12:24:37Z
dc.date.available2024-02-23T12:24:37Z
dc.date.issued2023-12-01
dc.identifier.citationScientific Reports: 13 (1): 14356 (2023)es_ES
dc.identifier.urihttp://hdl.handle.net/10810/66105
dc.description.abstractWe reconstructed hydroclimate variability in the Yucatán Peninsula (YP) based on stalagmite oxygen and carbon isotope records from a well-studied cave system located in the northeastern YP, a region strongly influenced by Caribbean climate dynamics. The new stalagmite isotopic records span the time interval between 43 and 26.6 ka BP, extending a previously published record from the same cave system covering the interval between 26.5 and 23.2 ka BP. Stalagmite stable isotope records show dominant decadal and multidecadal variability, and weaker variability on millennial timescales. These records suggest significant precipitation declines in the broader Caribbean region during Heinrich events 4 and 3 of ice-rafted discharge into the North Atlantic, in agreement with the antiphase pattern of precipitation variability across the equator suggested by previous studies. On millennial timescales, the stalagmite isotope records do not show the distinctive saw-tooth pattern of climate variability observed in Greenland during Dansgaard–Oeschger (DO) events, but a pattern similar to North Atlantic sea surface temperature (SST) variability. We propose that shifts in the mean position of the Intertropical Convergence Zone (ITCZ), per se, are not the dominant driver of last glacial hydroclimate variability in the YP on millennial timescales but instead that North Atlantic SSTs played a dominant role. Our results support a negative climate feedback mechanism whereby large low latitude precipitation deficits resulting from AMOC slowdown would lead to elevated salinity in the Caribbean and ultimately help reactivate AMOC and Caribbean precipitation. However, because of the unique drivers of future climate in the region, predicted twenty-first century YP precipitation reductions are unlikely to be modulated by this negative feedback mechanismes_ES
dc.description.sponsorshipM.M.E.: This project was funded by NSF Grant # AGS-2102983. J.M.P.M. acknowledges the Junta de Castilla y León and European Regional Development Fund (Grant CLU-2019-03) for their financial support. We thank Matthew DeCesare for producing the stable isotope results from Auburn University. M.M.E.: This project was funded by NSF Grant # AGS-2102983. J.M.P.M. acknowledges the Junta de Castilla y León and European Regional Development Fund (Grant CLU-2019-03) for their financial support. We thank Matthew DeCesare for producing the stable isotope results from Auburn University.es_ES
dc.language.isoenges_ES
dc.publisherScientific Reportses_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/es/*
dc.titleLast glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shiftses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© The Author(s) 2023es_ES
dc.rights.holderAtribución-NoComercial-CompartirIgual 3.0 España*
dc.relation.publisherversionhttps://dx.doi.org/10.1038/s41598-023-40108-6es_ES
dc.identifier.doi10.1038/s41598-023-40108-6


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

© The Author(s) 2023
Except where otherwise noted, this item's license is described as © The Author(s) 2023