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dc.contributor.authorLara Aguilar, Antonio
dc.contributor.authorVillalba, Ricardo
dc.contributor.authorUrrutia-Jalabert, Rocío
dc.contributor.authorGonzalez Reyes, Alvaro
dc.contributor.authorAravena, Juan
dc.contributor.authorLuckman, Brian
dc.contributor.authorCuq, Emilio
dc.contributor.authorRodríguez, Carmen Gloria
dc.contributor.authorWolodarsky-Franke, Alexia
dc.date.accessioned2020-08-19T20:58:53Z
dc.date.available2020-08-19T20:58:53Z
dc.date.issued2020
dc.identifier.issn0277-3791
dc.identifier.otherhttps://doi.org/10.1016/j.quascirev.2019.106087es_CL
dc.identifier.urihttps://bibliotecadigital.infor.cl/handle/20.500.12220/29917
dc.description.abstractIt is widely documented that the Earth’s surface temperatures have increased in recent decades. However, temperature increment patterns are not uniform around the globe, showing different or even contrasting trends. Here we present a mean maximum summer temperature record, based on tree-ring widths, over the past 5682 years (3672BC – 2009AD) for southern South America (SSA), covering from mid-Holocene to the present. This is the longest such record for the Southern Hemisphere (SH), and expands available annual proxy climate records for this region in more than 2060 years. Our record explains 49% of the temperature variation, and documents two major warm periods between 3140–2800BC and 70BC – 150AD, which coincide with the lack of evidence of glacier advances in SSA. Recent decades in the reconstruction (1959–2009) show a warming trend that is not exceptional in the context of the last five millennia. The long-term relationship between our temperature reconstruction and a reconstructed total solar irradiance record, with coinciding cycles at 293, 372, 432–434, 512 and 746 years, indicate a persistent influence of solar forcing on centennial climate variability in SSA. At interannual to interdecadal scales, reconstructed temperature is mainly related to the internal climate variability of the Pacific Ocean, including El Niño Southern Oscillation (ENSO) and longer oscillations. Our study reveals the need to characterize regional-scale climate variability and its drivers, which in the context of global-scale processes such as anthropogenic warming, interact to modulate local climate affecting humans and ecosystems.es_CL
dc.language.isoenes_CL
dc.publisherElsevieres_CL
dc.subjectCALENTAMIENTO GLOBALes_CL
dc.subjectCAMBIO CLIMATICOes_CL
dc.subjectPALEOCLIMATOLOGIAes_CL
dc.subjectANILLOS DE ARBOLESes_CL
dc.subjectAMERICA DEL SURes_CL
dc.title+A 5680-year tree-ring temperature record for southern South Americaes_CL
dc.typeArtículo de revista
infor.publicadoenQuaternary Science Reviews 228, 2020es_CL
infor.sedeSede Valdiviaes_CL
infor.operadorplves_CL
infor.lineasdeinvestigacionAdaptación y Mitigación al Cambio Climático


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