Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models

Results of four different coupled atmosphere-ocean general circulation model runs for South America and surrounding oveans are examined. The mean response of the simulated climate system to a gradual increase of greenhouse gases is presented. The transient coupled experiment data provide for the Int...

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Autores principales: Carril, A.F., Menéndez, C.G., Nuñez, M.N.
Formato: JOUR
Materias:
Climate change
Coupled general circulation model
ECHAM-2 (MPI)
GFDL
Intercomparison
NCAR
South America
Surface variables
UKMO
atmosphere/ocean coupling
climate change
ECHAM
GCM
model intercomparison
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08998418_v17_n15_p1613_Carril
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_08998418_v17_n15_p1613_Carril2023-10-03T15:44:09Z Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models Carril, A.F. Menéndez, C.G. Nuñez, M.N. Climate change Coupled general circulation model ECHAM-2 (MPI) GFDL Intercomparison NCAR South America Surface variables UKMO atmosphere/ocean coupling climate change ECHAM GCM model intercomparison South America Results of four different coupled atmosphere-ocean general circulation model runs for South America and surrounding oveans are examined. The mean response of the simulated climate system to a gradual increase of greenhouse gases is presented. The transient coupled experiment data provide for the Intergovernmental Panel on Climate Change (IPCC) were the most recent available to us at the time of this study, from the following research centres in Europe and USA: the UK Meteorollogical Office (UKMO), the Max-Planck Institute for meteorology (MPI), the Geophysical Fluid Dynamic Laboratory (GFDL) and the National Centre for Atmospheric Research (NCAR). The regional performance of the control simulations (with fixed CO2 concentration) is determined by comparing sea-level pressure, near-surface zonal wind, precipitation and surface air temperature from the models, against observed climatological fields. The response of the climate system to the enhanced emission scenarios is established comparing the control experiments with the respective transient experiments around the time of doubling CO2. To assist in estimating likely future climate change in the South American region, only the rusults of those model experiments with the best control simulatin of current climate in the region are considered: the UKMO and MPI models. A maximum warming over the continent and a minimum warming in the extratropical oceans, a slight intensification and south ward migration of the subtropical ridge, a deepening of the sub-Antarctic trough, an intensification of the westerly winds, and increasing precipitation in the tropics and in the mid-latitude oceans are the most important potential changes simulated by both models for the increased CO2 scenarios. © 1997 royal Meteorological Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08998418_v17_n15_p1613_Carril
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
Coupled general circulation model
ECHAM-2 (MPI)
GFDL
Intercomparison
NCAR
South America
Surface variables
UKMO
atmosphere/ocean coupling
climate change
ECHAM
GCM
model intercomparison
South America
spellingShingle Climate change
Coupled general circulation model
ECHAM-2 (MPI)
GFDL
Intercomparison
NCAR
South America
Surface variables
UKMO
atmosphere/ocean coupling
climate change
ECHAM
GCM
model intercomparison
South America
Carril, A.F.
Menéndez, C.G.
Nuñez, M.N.
Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
topic_facet Climate change
Coupled general circulation model
ECHAM-2 (MPI)
GFDL
Intercomparison
NCAR
South America
Surface variables
UKMO
atmosphere/ocean coupling
climate change
ECHAM
GCM
model intercomparison
South America
description Results of four different coupled atmosphere-ocean general circulation model runs for South America and surrounding oveans are examined. The mean response of the simulated climate system to a gradual increase of greenhouse gases is presented. The transient coupled experiment data provide for the Intergovernmental Panel on Climate Change (IPCC) were the most recent available to us at the time of this study, from the following research centres in Europe and USA: the UK Meteorollogical Office (UKMO), the Max-Planck Institute for meteorology (MPI), the Geophysical Fluid Dynamic Laboratory (GFDL) and the National Centre for Atmospheric Research (NCAR). The regional performance of the control simulations (with fixed CO2 concentration) is determined by comparing sea-level pressure, near-surface zonal wind, precipitation and surface air temperature from the models, against observed climatological fields. The response of the climate system to the enhanced emission scenarios is established comparing the control experiments with the respective transient experiments around the time of doubling CO2. To assist in estimating likely future climate change in the South American region, only the rusults of those model experiments with the best control simulatin of current climate in the region are considered: the UKMO and MPI models. A maximum warming over the continent and a minimum warming in the extratropical oceans, a slight intensification and south ward migration of the subtropical ridge, a deepening of the sub-Antarctic trough, an intensification of the westerly winds, and increasing precipitation in the tropics and in the mid-latitude oceans are the most important potential changes simulated by both models for the increased CO2 scenarios. © 1997 royal Meteorological Society.
format JOUR
author Carril, A.F.
Menéndez, C.G.
Nuñez, M.N.
author_facet Carril, A.F.
Menéndez, C.G.
Nuñez, M.N.
author_sort Carril, A.F.
title Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
title_short Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
title_full Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
title_fullStr Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
title_full_unstemmed Climate change scenarios over the South America region: An intercomparison of coupled general atmosphere-ocean circulation models
title_sort climate change scenarios over the south america region: an intercomparison of coupled general atmosphere-ocean circulation models
url http://hdl.handle.net/20.500.12110/paper_08998418_v17_n15_p1613_Carril
work_keys_str_mv AT carrilaf climatechangescenariosoverthesouthamericaregionanintercomparisonofcoupledgeneralatmosphereoceancirculationmodels
AT menendezcg climatechangescenariosoverthesouthamericaregionanintercomparisonofcoupledgeneralatmosphereoceancirculationmodels
AT nunezmn climatechangescenariosoverthesouthamericaregionanintercomparisonofcoupledgeneralatmosphereoceancirculationmodels
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