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Abstract:

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.

Registro:

Documento: Artículo
Título:Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century
Autor:Nuez, M.N.; Solman, S.A.; Cabré, M.F.
Filiación:Centro de Investigaciones del Mar y la Atḿsfera (CIMA-CONICET/UBA), DCAO, FCEyN-UBA, Pabellón II, Piso 2, Buenos Aires 1428, Argentina
Centro de Investigaciones del Mar y la Atḿsfera (CIMA-CONICET/UBA), Pabellón II, Piso 2, Buenos Aires 1428, Argentina
Palabras clave: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
Año:2009
Volumen:32
Número:7-8
Página de inicio:1081
Página de fin:1095
DOI: http://dx.doi.org/10.1007/s00382-008-0449-8
Título revista:Climate Dynamics
Título revista abreviado:Clim. Dyn.
ISSN:09307575
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307575_v32_n7-8_p1081_Nuez

Referencias:

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Citas:

---------- APA ----------
Nuez, M.N., Solman, S.A. & Cabré, M.F. (2009) . Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century. Climate Dynamics, 32(7-8), 1081-1095.
http://dx.doi.org/10.1007/s00382-008-0449-8
---------- CHICAGO ----------
Nuez, M.N., Solman, S.A., Cabré, M.F. "Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century" . Climate Dynamics 32, no. 7-8 (2009) : 1081-1095.
http://dx.doi.org/10.1007/s00382-008-0449-8
---------- MLA ----------
Nuez, M.N., Solman, S.A., Cabré, M.F. "Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century" . Climate Dynamics, vol. 32, no. 7-8, 2009, pp. 1081-1095.
http://dx.doi.org/10.1007/s00382-008-0449-8
---------- VANCOUVER ----------
Nuez, M.N., Solman, S.A., Cabré, M.F. Regional climate change experiments over southern South America. II: Climate change scenarios in the late twenty-first century. Clim. Dyn. 2009;32(7-8):1081-1095.
http://dx.doi.org/10.1007/s00382-008-0449-8