Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00382-016-3271-8 http://hdl.handle.net/11449/164760 |
Resumo: | This study investigates the impact of increased horizontal resolution in coupled and atmosphere-only global climate models on the simulation of climate patterns in South America (SA). We analyze simulations of the HadGEM1 model family with three different horizontal resolutions in the atmosphere-N96 (similar to 135 km at 50A degrees N), N144 (similar to 90 km) and N216 (similar to 60 km)-and two different resolutions in the ocean-1A degrees and 1/3A degrees. In general, the coupled simulation with the highest resolution (60 km in the atmosphere and 1/3A degrees in the ocean) has smaller systematic errors in seasonal mean precipitation, temperature and circulation over SA than the atmosphere-only model at all resolutions. The models, both coupled and atmosphere-only, properly simulate spatial patterns of the seasonal shift of the Intertropical Convergence Zone (ITCZ), the formation and positioning of the South Atlantic Convergence Zone (SACZ), and the subtropical Atlantic and Pacific highs. However, the models overestimate rainfall, especially in the ITCZ and over the western border of high-elevation areas such as southern Chile. The coupling, combined with higher resolution, result in a more realistic spatial pattern of rain, particularly over the Atlantic ITCZ and the continental branch of the SACZ. All models correctly simulate the phase and amplitude of the annual cycle of precipitation and air temperature over most of South America. The overall results show that despite some problems, increasing the resolution in the HadGEM1 model family results in a more realistic representation of climate patterns over South America and the adjacent oceans. |
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Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South AmericaSouth AmericaCoupledAtmosphericResolutionThis study investigates the impact of increased horizontal resolution in coupled and atmosphere-only global climate models on the simulation of climate patterns in South America (SA). We analyze simulations of the HadGEM1 model family with three different horizontal resolutions in the atmosphere-N96 (similar to 135 km at 50A degrees N), N144 (similar to 90 km) and N216 (similar to 60 km)-and two different resolutions in the ocean-1A degrees and 1/3A degrees. In general, the coupled simulation with the highest resolution (60 km in the atmosphere and 1/3A degrees in the ocean) has smaller systematic errors in seasonal mean precipitation, temperature and circulation over SA than the atmosphere-only model at all resolutions. The models, both coupled and atmosphere-only, properly simulate spatial patterns of the seasonal shift of the Intertropical Convergence Zone (ITCZ), the formation and positioning of the South Atlantic Convergence Zone (SACZ), and the subtropical Atlantic and Pacific highs. However, the models overestimate rainfall, especially in the ITCZ and over the western border of high-elevation areas such as southern Chile. The coupling, combined with higher resolution, result in a more realistic spatial pattern of rain, particularly over the Atlantic ITCZ and the continental branch of the SACZ. All models correctly simulate the phase and amplitude of the annual cycle of precipitation and air temperature over most of South America. The overall results show that despite some problems, increasing the resolution in the HadGEM1 model family results in a more realistic representation of climate patterns over South America and the adjacent oceans.University of ReadingMet OfficeNERC High Resolution Climate Modelling GrantForeign and Commonwealth Office Global Opportunities FundNERCJoint DECC/Defra Met Office Hadley Centre Climate ProgrammeFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Natural Environment Research CouncilUniv Estadual Paulista, Dept Fis, Sao Paulo, BrazilCtr Meteorol Bauru IPMet, Sao Paulo, BrazilUniv Sao Paulo, Dept Ciencias Atmosfer, Sao Paulo, BrazilUniv Reading, Dept Meteorol, Natl Ctr Atmospher Sci, Reading, Berks, EnglandUniv Estadual Paulista, Dept Fis, Sao Paulo, BrazilNERC High Resolution Climate Modelling Grant: R8/H12/123Joint DECC/Defra Met Office Hadley Centre Climate Programme: GA01101FAPESP: 13/50521-7Natural Environment Research Council: jwcrp01003SpringerUniversidade Estadual Paulista (Unesp)Ctr Meteorol Bauru IPMetUniversidade de São Paulo (USP)Univ ReadingCustodio, Maria de Souza [UNESP]Rocha, Rosmeri Porfirio daAmbrizzi, TercioVidale, Pier LuigiDemory, Marie-Estelle2018-11-26T17:55:59Z2018-11-26T17:55:59Z2017-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3341-3364application/pdfhttp://dx.doi.org/10.1007/s00382-016-3271-8Climate Dynamics. New York: Springer, v. 48, n. 9-10, p. 3341-3364, 2017.0930-7575http://hdl.handle.net/11449/16476010.1007/s00382-016-3271-8WOS:000399431900030WOS000399431900030.pdf95678665160836080000-0001-5680-4479Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengClimate Dynamicsinfo:eu-repo/semantics/openAccess2023-11-27T06:15:11Zoai:repositorio.unesp.br:11449/164760Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:52:07.571191Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
title |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
spellingShingle |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America Custodio, Maria de Souza [UNESP] South America Coupled Atmospheric Resolution |
title_short |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
title_full |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
title_fullStr |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
title_full_unstemmed |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
title_sort |
Impact of increased horizontal resolution in coupled and atmosphere-only models of the HadGEM1 family upon the climate patterns of South America |
author |
Custodio, Maria de Souza [UNESP] |
author_facet |
Custodio, Maria de Souza [UNESP] Rocha, Rosmeri Porfirio da Ambrizzi, Tercio Vidale, Pier Luigi Demory, Marie-Estelle |
author_role |
author |
author2 |
Rocha, Rosmeri Porfirio da Ambrizzi, Tercio Vidale, Pier Luigi Demory, Marie-Estelle |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Ctr Meteorol Bauru IPMet Universidade de São Paulo (USP) Univ Reading |
dc.contributor.author.fl_str_mv |
Custodio, Maria de Souza [UNESP] Rocha, Rosmeri Porfirio da Ambrizzi, Tercio Vidale, Pier Luigi Demory, Marie-Estelle |
dc.subject.por.fl_str_mv |
South America Coupled Atmospheric Resolution |
topic |
South America Coupled Atmospheric Resolution |
description |
This study investigates the impact of increased horizontal resolution in coupled and atmosphere-only global climate models on the simulation of climate patterns in South America (SA). We analyze simulations of the HadGEM1 model family with three different horizontal resolutions in the atmosphere-N96 (similar to 135 km at 50A degrees N), N144 (similar to 90 km) and N216 (similar to 60 km)-and two different resolutions in the ocean-1A degrees and 1/3A degrees. In general, the coupled simulation with the highest resolution (60 km in the atmosphere and 1/3A degrees in the ocean) has smaller systematic errors in seasonal mean precipitation, temperature and circulation over SA than the atmosphere-only model at all resolutions. The models, both coupled and atmosphere-only, properly simulate spatial patterns of the seasonal shift of the Intertropical Convergence Zone (ITCZ), the formation and positioning of the South Atlantic Convergence Zone (SACZ), and the subtropical Atlantic and Pacific highs. However, the models overestimate rainfall, especially in the ITCZ and over the western border of high-elevation areas such as southern Chile. The coupling, combined with higher resolution, result in a more realistic spatial pattern of rain, particularly over the Atlantic ITCZ and the continental branch of the SACZ. All models correctly simulate the phase and amplitude of the annual cycle of precipitation and air temperature over most of South America. The overall results show that despite some problems, increasing the resolution in the HadGEM1 model family results in a more realistic representation of climate patterns over South America and the adjacent oceans. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-01 2018-11-26T17:55:59Z 2018-11-26T17:55:59Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s00382-016-3271-8 Climate Dynamics. New York: Springer, v. 48, n. 9-10, p. 3341-3364, 2017. 0930-7575 http://hdl.handle.net/11449/164760 10.1007/s00382-016-3271-8 WOS:000399431900030 WOS000399431900030.pdf 9567866516083608 0000-0001-5680-4479 |
url |
http://dx.doi.org/10.1007/s00382-016-3271-8 http://hdl.handle.net/11449/164760 |
identifier_str_mv |
Climate Dynamics. New York: Springer, v. 48, n. 9-10, p. 3341-3364, 2017. 0930-7575 10.1007/s00382-016-3271-8 WOS:000399431900030 WOS000399431900030.pdf 9567866516083608 0000-0001-5680-4479 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Climate Dynamics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3341-3364 application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128992616644608 |