The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022
- Autores
- Yuchechen, Adrian E.; Lakkis, Susan Gabriela; Canziani, Pablo O.
- Año de publicación
- 2025
- Idioma
- inglés
- Tipo de recurso
- libro
- Estado
- versión publicada
- Descripción
- Fil: Yuchechen, Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Yuchechen, Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Fil: Lakkis, Susan Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Fil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; Argentina
Fil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Blocking anticyclones are important atmospheric phenomena generally associated with extreme weather (e.g., droughts and cold air surges). Blockings also constitute largescale indicators of climate change. The study of blockings in the Southern Hemisphere (SH) has been traditionally carried out utilizing reanalysis products. This paper is aimed at presenting an updated, comprehensive climatology of blockings in the SH as extracted from the ERA5 and the NCEP/NCAR reanalysis datasets in the 1940–2022 and 1948–2022 periods, respectively. Blockings were located by means of a unidimensional index at 500 hPa. The results were stratified by season, longitude, region, persistence, and intensity, and the climatology from both datasets was compared. The primary location of blockings was close to the Date Line in every season. Additionally, depending on the season, up to fourth-rank maxima could be located. Generally, the secondary maxima were found in the south Atlantic; lower-order maxima were located in the south-eastern Pacific, west of South America, and in the south-western Indian Ocean east of South Africa. The most intense blockings were concentrated in the Pacific and in the south Atlantic in both datasets, and they were also located in the Indian Ocean, but in the ERA5 reanalysis only. The longest-lived blockings occurred in the south Pacific and in the south Atlantic during southern winter. - Fuente
- Atmosphere 2025, 16(6): 719
- Materia
-
500 hPa
CLIMATOLOGIA
HEMISFERIO SUR
ERA5
NCEP/NCAR - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Pontificia Universidad Católica Argentina
- OAI Identificador
- oai:ucacris:123456789/19956
Ver los metadatos del registro completo
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oai:ucacris:123456789/19956 |
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network_name_str |
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spelling |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022Yuchechen, Adrian E.Lakkis, Susan GabrielaCanziani, Pablo O.500 hPaCLIMATOLOGIAHEMISFERIO SURERA5NCEP/NCARFil: Yuchechen, Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Yuchechen, Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaFil: Lakkis, Susan Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaFil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; ArgentinaFil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaBlocking anticyclones are important atmospheric phenomena generally associated with extreme weather (e.g., droughts and cold air surges). Blockings also constitute largescale indicators of climate change. The study of blockings in the Southern Hemisphere (SH) has been traditionally carried out utilizing reanalysis products. This paper is aimed at presenting an updated, comprehensive climatology of blockings in the SH as extracted from the ERA5 and the NCEP/NCAR reanalysis datasets in the 1940–2022 and 1948–2022 periods, respectively. Blockings were located by means of a unidimensional index at 500 hPa. The results were stratified by season, longitude, region, persistence, and intensity, and the climatology from both datasets was compared. The primary location of blockings was close to the Date Line in every season. Additionally, depending on the season, up to fourth-rank maxima could be located. Generally, the secondary maxima were found in the south Atlantic; lower-order maxima were located in the south-eastern Pacific, west of South America, and in the south-western Indian Ocean east of South Africa. The most intense blockings were concentrated in the Pacific and in the south Atlantic in both datasets, and they were also located in the Indian Ocean, but in the ERA5 reanalysis only. The longest-lived blockings occurred in the south Pacific and in the south Atlantic during southern winter.MDPI2025info:eu-repo/semantics/bookinfo:ar-repo/semantics/libroinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_2f33application/pdfhttps://repositorio.uca.edu.ar/handle/123456789/199562073-4433https://doi.org/10.3390/atmos16060719Atmosphere 2025, 16(6): 719reponame:Repositorio Institucional (UCA)instname:Pontificia Universidad Católica ArgentinaengRecuperación de datos climáticos históricos en Argentinainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/2025-07-03T11:00:14Zoai:ucacris:123456789/19956instacron:UCAInstitucionalhttps://repositorio.uca.edu.ar/Universidad privadaNo correspondehttps://repositorio.uca.edu.ar/oaiclaudia_fernandez@uca.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:25852025-07-03 11:00:15.201Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentinafalse |
dc.title.none.fl_str_mv |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
title |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
spellingShingle |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 Yuchechen, Adrian E. 500 hPa CLIMATOLOGIA HEMISFERIO SUR ERA5 NCEP/NCAR |
title_short |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
title_full |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
title_fullStr |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
title_full_unstemmed |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
title_sort |
The Southern Hemisphere Blocking Index in the ERA5 and the NCEP/NCAR Datasets: A Comparative Climatology for the Period 1940–2022 |
dc.creator.none.fl_str_mv |
Yuchechen, Adrian E. Lakkis, Susan Gabriela Canziani, Pablo O. |
author |
Yuchechen, Adrian E. |
author_facet |
Yuchechen, Adrian E. Lakkis, Susan Gabriela Canziani, Pablo O. |
author_role |
author |
author2 |
Lakkis, Susan Gabriela Canziani, Pablo O. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
500 hPa CLIMATOLOGIA HEMISFERIO SUR ERA5 NCEP/NCAR |
topic |
500 hPa CLIMATOLOGIA HEMISFERIO SUR ERA5 NCEP/NCAR |
dc.description.none.fl_txt_mv |
Fil: Yuchechen, Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Yuchechen, Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Fil: Lakkis, Susan Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Fil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; Argentina Fil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Fil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Blocking anticyclones are important atmospheric phenomena generally associated with extreme weather (e.g., droughts and cold air surges). Blockings also constitute largescale indicators of climate change. The study of blockings in the Southern Hemisphere (SH) has been traditionally carried out utilizing reanalysis products. This paper is aimed at presenting an updated, comprehensive climatology of blockings in the SH as extracted from the ERA5 and the NCEP/NCAR reanalysis datasets in the 1940–2022 and 1948–2022 periods, respectively. Blockings were located by means of a unidimensional index at 500 hPa. The results were stratified by season, longitude, region, persistence, and intensity, and the climatology from both datasets was compared. The primary location of blockings was close to the Date Line in every season. Additionally, depending on the season, up to fourth-rank maxima could be located. Generally, the secondary maxima were found in the south Atlantic; lower-order maxima were located in the south-eastern Pacific, west of South America, and in the south-western Indian Ocean east of South Africa. The most intense blockings were concentrated in the Pacific and in the south Atlantic in both datasets, and they were also located in the Indian Ocean, but in the ERA5 reanalysis only. The longest-lived blockings occurred in the south Pacific and in the south Atlantic during southern winter. |
description |
Fil: Yuchechen, Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
publishDate |
2025 |
dc.date.none.fl_str_mv |
2025 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/book info:ar-repo/semantics/libro info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_2f33 |
format |
book |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
https://repositorio.uca.edu.ar/handle/123456789/19956 2073-4433 https://doi.org/10.3390/atmos16060719 |
url |
https://repositorio.uca.edu.ar/handle/123456789/19956 https://doi.org/10.3390/atmos16060719 |
identifier_str_mv |
2073-4433 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Recuperación de datos climáticos históricos en Argentina |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
Atmosphere 2025, 16(6): 719 reponame:Repositorio Institucional (UCA) instname:Pontificia Universidad Católica Argentina |
reponame_str |
Repositorio Institucional (UCA) |
collection |
Repositorio Institucional (UCA) |
instname_str |
Pontificia Universidad Católica Argentina |
repository.name.fl_str_mv |
Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentina |
repository.mail.fl_str_mv |
claudia_fernandez@uca.edu.ar |
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1836638377506504704 |
score |
13.13397 |