The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model
The Southern Annular Mode (SAM, also known as the Antarctic Oscillation—AAO) explains most of the climate variability in the Southern Hemisphere. A ring pattern in mean sea level pressure (MSLP) or 500 hPa geopotential height around Antarctica characterizes SAM. Differences of MSLP values between SH...
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ftdoajarticles:oai:doaj.org/article:fc359a9fa22c4ac7a8fb372e5941db82 2023-05-15T13:56:14+02:00 The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model Luciana F. Prado Ilana Wainer Ronald B. de Souza 2021-08-01T00:00:00Z https://doi.org/10.3390/atmos12081045 https://doaj.org/article/fc359a9fa22c4ac7a8fb372e5941db82 EN eng MDPI AG https://www.mdpi.com/2073-4433/12/8/1045 https://doaj.org/toc/2073-4433 doi:10.3390/atmos12081045 2073-4433 https://doaj.org/article/fc359a9fa22c4ac7a8fb372e5941db82 Atmosphere, Vol 12, Iss 1045, p 1045 (2021) Southern Annular Mode model evaluation mean sea level pressure temperature precipitation South America Meteorology. Climatology QC851-999 article 2021 ftdoajarticles https://doi.org/10.3390/atmos12081045 2022-12-31T10:20:41Z The Southern Annular Mode (SAM, also known as the Antarctic Oscillation—AAO) explains most of the climate variability in the Southern Hemisphere. A ring pattern in mean sea level pressure (MSLP) or 500 hPa geopotential height around Antarctica characterizes SAM. Differences of MSLP values between SH mid and high latitudes define positive and negative SAM phases with impacts on mean atmospheric circulation. Thus, investigating how different models represent SAM is of paramount importance, as it can improve their ability to describe or even predict most of the SH climate variability. Here we examine how the Brazilian Earth System Model (BESM) represents SAM’s signal compared with observations, reanalysis, and other climate models contributing to the Coupled Modeling Intercomparison Project version 5 (CMIP5). We also evaluate how SAM relates to the South American surface temperature and precipitation and discuss the models’ limitations and biases compared with reanalysis data. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Atmosphere 12 8 1045 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Southern Annular Mode model evaluation mean sea level pressure temperature precipitation South America Meteorology. Climatology QC851-999 |
spellingShingle |
Southern Annular Mode model evaluation mean sea level pressure temperature precipitation South America Meteorology. Climatology QC851-999 Luciana F. Prado Ilana Wainer Ronald B. de Souza The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
topic_facet |
Southern Annular Mode model evaluation mean sea level pressure temperature precipitation South America Meteorology. Climatology QC851-999 |
description |
The Southern Annular Mode (SAM, also known as the Antarctic Oscillation—AAO) explains most of the climate variability in the Southern Hemisphere. A ring pattern in mean sea level pressure (MSLP) or 500 hPa geopotential height around Antarctica characterizes SAM. Differences of MSLP values between SH mid and high latitudes define positive and negative SAM phases with impacts on mean atmospheric circulation. Thus, investigating how different models represent SAM is of paramount importance, as it can improve their ability to describe or even predict most of the SH climate variability. Here we examine how the Brazilian Earth System Model (BESM) represents SAM’s signal compared with observations, reanalysis, and other climate models contributing to the Coupled Modeling Intercomparison Project version 5 (CMIP5). We also evaluate how SAM relates to the South American surface temperature and precipitation and discuss the models’ limitations and biases compared with reanalysis data. |
format |
Article in Journal/Newspaper |
author |
Luciana F. Prado Ilana Wainer Ronald B. de Souza |
author_facet |
Luciana F. Prado Ilana Wainer Ronald B. de Souza |
author_sort |
Luciana F. Prado |
title |
The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
title_short |
The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
title_full |
The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
title_fullStr |
The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
title_full_unstemmed |
The Representation of the Southern Annular Mode Signal in the Brazilian Earth System Model |
title_sort |
representation of the southern annular mode signal in the brazilian earth system model |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/atmos12081045 https://doaj.org/article/fc359a9fa22c4ac7a8fb372e5941db82 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Atmosphere, Vol 12, Iss 1045, p 1045 (2021) |
op_relation |
https://www.mdpi.com/2073-4433/12/8/1045 https://doaj.org/toc/2073-4433 doi:10.3390/atmos12081045 2073-4433 https://doaj.org/article/fc359a9fa22c4ac7a8fb372e5941db82 |
op_doi |
https://doi.org/10.3390/atmos12081045 |
container_title |
Atmosphere |
container_volume |
12 |
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8 |
container_start_page |
1045 |
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1766263613458219008 |