Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America

This paper is the first analysis of differences between Last Glacial Maximum (LGM) and present climates in southern South America considering the state-of-the-art PMIP3 paleoclimatic models. The study is focused on characteristics of temperature and precipitation over the portion of the continent to...

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Autores principales:	Berman, A.L., Silvestri, G.E., Tonello, M.S.
Formato:	JOUR
Materias:	Last Glacial Maximum Pampa Patagonia South America Glacial geology Regional scale Southern south america State of the art Subtropical area Climate models climate change paleoclimate precipitation (climatology) reconstruction subtropical region temperature profile Andes Argentina Cordillera Pampas Paraguay
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_02773791_v150_n_p221_Berman
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_02773791_v150_n_p221_Berman2023-10-03T15:16:02Z Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America Berman, A.L. Silvestri, G.E. Tonello, M.S. Last Glacial Maximum Pampa Patagonia South America Glacial geology Last Glacial Maximum Pampa Patagonia Regional scale South America Southern south america State of the art Subtropical area Climate models climate change Last Glacial Maximum paleoclimate precipitation (climatology) reconstruction subtropical region temperature profile Andes Argentina Cordillera Pampas Paraguay Patagonia This paper is the first analysis of differences between Last Glacial Maximum (LGM) and present climates in southern South America considering the state-of-the-art PMIP3 paleoclimatic models. The study is focused on characteristics of temperature and precipitation over the portion of the continent to the south of 20°S at both sides of the Andes Cordillera. Results demonstrate that model outputs coincide with glacial conditions inferred from the very few paleorecords available in the region. Consequently, these models are a valuable tool for inferring additional conditions in areas where there is a lack of proxy information allowing the reconstruction of the past climate at regional scales. The analyzed PMIP3 models expose an LGM cooling of ∼2-5 °C throughout the year over almost all southern South America but differences are even more pronounced in areas around the southern Andes. Models also suggest that LGM precipitation was substantially lower than present over the portion of southern South America to the east of the Andes inferring reductions of ∼20–30% with respect to present-day values in subtropical areas and ∼40–50% in the southern tip of the continent. © 2016 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02773791_v150_n_p221_Berman
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Last Glacial Maximum Pampa Patagonia South America Glacial geology Last Glacial Maximum Pampa Patagonia Regional scale South America Southern south america State of the art Subtropical area Climate models climate change Last Glacial Maximum paleoclimate precipitation (climatology) reconstruction subtropical region temperature profile Andes Argentina Cordillera Pampas Paraguay Patagonia
spellingShingle	Last Glacial Maximum Pampa Patagonia South America Glacial geology Last Glacial Maximum Pampa Patagonia Regional scale South America Southern south america State of the art Subtropical area Climate models climate change Last Glacial Maximum paleoclimate precipitation (climatology) reconstruction subtropical region temperature profile Andes Argentina Cordillera Pampas Paraguay Patagonia Berman, A.L. Silvestri, G.E. Tonello, M.S. Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
topic_facet	Last Glacial Maximum Pampa Patagonia South America Glacial geology Last Glacial Maximum Pampa Patagonia Regional scale South America Southern south america State of the art Subtropical area Climate models climate change Last Glacial Maximum paleoclimate precipitation (climatology) reconstruction subtropical region temperature profile Andes Argentina Cordillera Pampas Paraguay Patagonia
description	This paper is the first analysis of differences between Last Glacial Maximum (LGM) and present climates in southern South America considering the state-of-the-art PMIP3 paleoclimatic models. The study is focused on characteristics of temperature and precipitation over the portion of the continent to the south of 20°S at both sides of the Andes Cordillera. Results demonstrate that model outputs coincide with glacial conditions inferred from the very few paleorecords available in the region. Consequently, these models are a valuable tool for inferring additional conditions in areas where there is a lack of proxy information allowing the reconstruction of the past climate at regional scales. The analyzed PMIP3 models expose an LGM cooling of ∼2-5 °C throughout the year over almost all southern South America but differences are even more pronounced in areas around the southern Andes. Models also suggest that LGM precipitation was substantially lower than present over the portion of southern South America to the east of the Andes inferring reductions of ∼20–30% with respect to present-day values in subtropical areas and ∼40–50% in the southern tip of the continent. © 2016 Elsevier Ltd
format	JOUR
author	Berman, A.L. Silvestri, G.E. Tonello, M.S.
author_facet	Berman, A.L. Silvestri, G.E. Tonello, M.S.
author_sort	Berman, A.L.
title	Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
title_short	Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
title_full	Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
title_fullStr	Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
title_full_unstemmed	Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America
title_sort	differences between last glacial maximum and present-day temperature and precipitation in southern south america
url	http://hdl.handle.net/20.500.12110/paper_02773791_v150_n_p221_Berman
work_keys_str_mv	AT bermanal differencesbetweenlastglacialmaximumandpresentdaytemperatureandprecipitationinsouthernsouthamerica AT silvestrige differencesbetweenlastglacialmaximumandpresentdaytemperatureandprecipitationinsouthernsouthamerica AT tonelloms differencesbetweenlastglacialmaximumandpresentdaytemperatureandprecipitationinsouthernsouthamerica
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Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America

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