Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century

We present an analysis of climate change over southern South America as simulated by a regional climate model. The regional model MM5 was nested within time-slice global atmospheric model experiments conducted by the HadAM3H model. The simulations cover a 10-year period representing present-day clim...

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Autores principales:	Solman, Silvina Alicia, Cabre, Maria Fernanda
Publicado:	2009
Materias:	Climate change scenarios Regional climate modeling Southern South America atmospheric circulation climate change climate modeling regional climate sea level pressure simulation twenty first century Atlantic Ocean Atlantic Ocean (South) Bolivia Brazil Pacific Ocean Pacific Ocean (South) Paraguay South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307575_v32_n7-8_p1081_Nuez http://hdl.handle.net/20.500.12110/paper_09307575_v32_n7-8_p1081_Nuez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09307575_v32_n7-8_p1081_Nuez
record_format	dspace
spelling	paper:paper_09307575_v32_n7-8_p1081_Nuez2023-06-08T15:52:39Z Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century Solman, Silvina Alicia Cabre, Maria Fernanda Climate change scenarios Regional climate modeling Southern South America atmospheric circulation climate change climate modeling regional climate sea level pressure simulation twenty first century Atlantic Ocean Atlantic Ocean (South) Bolivia Brazil Pacific Ocean Pacific Ocean (South) Paraguay South America We present an analysis of climate change over southern South America as simulated by a regional climate model. The regional model MM5 was nested within time-slice global atmospheric model experiments conducted by the HadAM3H model. The simulations cover a 10-year period representing present-day climate (1981-1990) and two future scenarios for the SRESA2 and B2 emission scenarios for the period 2081-2090. There are a few quantitative differences between the two regional scenarios. The simulated changes are larger for the A2 than the B2 scenario, although with few qualitative differences. For the two regional scenarios, the warming in southern Brazil, Paraguay, Bolivia and northeastern Argentina is particularly large in spring. Over the western coast of South America both scenarios project a general decrease in precipitation. Both the A2 and B2 simulations show a general increase in precipitation in northern and central Argentina especially in summer and fall and a general decrease in precipitation in winter and spring. In fall the simulations agree on a general decrease in precipitation in southern Brazil. This reflects changes in the atmospheric circulation during winter and spring. Changes in mean sea level pressure show a cell of increasing pressure centered somewhere in the southern Atlantic Ocean and southern Pacific Ocean, mainly during summer and fall in the Atlantic and in spring in the Pacific. In relation to the pressure distribution in the control run, this indicates a southward extension of the summer mean Atlantic and Pacific subtropical highs. © Springer-Verlag 2008. Fil:Solman, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cabré, M.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307575_v32_n7-8_p1081_Nuez http://hdl.handle.net/20.500.12110/paper_09307575_v32_n7-8_p1081_Nuez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Climate change scenarios Regional climate modeling Southern South America atmospheric circulation climate change climate modeling regional climate sea level pressure simulation twenty first century Atlantic Ocean Atlantic Ocean (South) Bolivia Brazil Pacific Ocean Pacific Ocean (South) Paraguay South America
spellingShingle	Climate change scenarios Regional climate modeling Southern South America atmospheric circulation climate change climate modeling regional climate sea level pressure simulation twenty first century Atlantic Ocean Atlantic Ocean (South) Bolivia Brazil Pacific Ocean Pacific Ocean (South) Paraguay South America Solman, Silvina Alicia Cabre, Maria Fernanda Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
topic_facet	Climate change scenarios Regional climate modeling Southern South America atmospheric circulation climate change climate modeling regional climate sea level pressure simulation twenty first century Atlantic Ocean Atlantic Ocean (South) Bolivia Brazil Pacific Ocean Pacific Ocean (South) Paraguay South America
description	We present an analysis of climate change over southern South America as simulated by a regional climate model. The regional model MM5 was nested within time-slice global atmospheric model experiments conducted by the HadAM3H model. The simulations cover a 10-year period representing present-day climate (1981-1990) and two future scenarios for the SRESA2 and B2 emission scenarios for the period 2081-2090. There are a few quantitative differences between the two regional scenarios. The simulated changes are larger for the A2 than the B2 scenario, although with few qualitative differences. For the two regional scenarios, the warming in southern Brazil, Paraguay, Bolivia and northeastern Argentina is particularly large in spring. Over the western coast of South America both scenarios project a general decrease in precipitation. Both the A2 and B2 simulations show a general increase in precipitation in northern and central Argentina especially in summer and fall and a general decrease in precipitation in winter and spring. In fall the simulations agree on a general decrease in precipitation in southern Brazil. This reflects changes in the atmospheric circulation during winter and spring. Changes in mean sea level pressure show a cell of increasing pressure centered somewhere in the southern Atlantic Ocean and southern Pacific Ocean, mainly during summer and fall in the Atlantic and in spring in the Pacific. In relation to the pressure distribution in the control run, this indicates a southward extension of the summer mean Atlantic and Pacific subtropical highs. © Springer-Verlag 2008.
author	Solman, Silvina Alicia Cabre, Maria Fernanda
author_facet	Solman, Silvina Alicia Cabre, Maria Fernanda
author_sort	Solman, Silvina Alicia
title	Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
title_short	Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
title_full	Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
title_fullStr	Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
title_full_unstemmed	Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
title_sort	regional climate change experiments over southern south america. ii: climate change scenarios in the late twenty-first century
publishDate	2009
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307575_v32_n7-8_p1081_Nuez http://hdl.handle.net/20.500.12110/paper_09307575_v32_n7-8_p1081_Nuez
work_keys_str_mv	AT solmansilvinaalicia regionalclimatechangeexperimentsoversouthernsouthamericaiiclimatechangescenariosinthelatetwentyfirstcentury AT cabremariafernanda regionalclimatechangeexperimentsoversouthernsouthamericaiiclimatechangescenariosinthelatetwentyfirstcentury
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Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century

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