High- and low-latitude forcings drive Atacama Desert rainfall variations over the past 16,000 years

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dc.contributor.authorGonzalez-Pinilla, Francisco J.
dc.contributor.authorLatorre, Claudio
dc.contributor.authorRojas, Maisa
dc.contributor.authorHouston, John
dc.contributor.authorIgnacia Rocuant, M.
dc.contributor.authorMaldonado, Antonio
dc.contributor.authorSantoro, Calogero M.
dc.contributor.authorQuade, Jay
dc.contributor.authorBetancourt, Julio L.
dc.date.accessioned2025-01-20T22:08:09Z
dc.date.available2025-01-20T22:08:09Z
dc.date.issued2021
dc.description.abstractLate Quaternary precipitation dynamics in the central Andes have been linked to both high- and low-latitude atmospheric teleconnections. We use present-day relationships between fecal pellet diameters from ashy chinchilla rats (Abrocoma cinerea) and mean annual rainfall to reconstruct the timing and magnitude of pluvials (wet episodes) spanning the past 16,000 years in the Atacama Desert based on 81 C-14-dated A. cinerea paleomiddens. A transient climate simulation shows that pluvials identified at 15.9 to 14.8, 13.0 to 8.6, and 8.1 to 7.6 ka B.P. can be linked to North Atlantic (high-latitude) forcing (e. g., Heinrich Stadial 1, Younger Dryas, and Bond cold events). Holocene pluvials at 5.0 to 4.6, 3.2 to 2.1, and 1.4 to 0.7 ka B.P. are not simulated, implying low-latitude internal variability forcing (i.e., ENSO regime shifts). These results help constrain future central Andean hydroclimatic variability and hold promise for reconstructing past climates from rodent middens in desert ecosystems worldwide.
dc.fuente.origenWOS
dc.identifier.doi10.1126/sciadv.abg1333
dc.identifier.issn2375-2548
dc.identifier.urihttps://doi.org/10.1126/sciadv.abg1333
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94279
dc.identifier.wosidWOS:000697350600010
dc.issue.numero38
dc.language.isoen
dc.revistaScience advances
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleHigh- and low-latitude forcings drive Atacama Desert rainfall variations over the past 16,000 years
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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