The Southern Hemisphere Blocking Index Revisited

Autores
Yuchechen, Adrian Enrique; Lakkis, Susan Gabriela; Canziani, Pablo Osvaldo
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (Formula presented.) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever (Formula presented.). The results were organized in longitudinal bands of a width of 10° in order to compare them with previous findings. The primary region for the occurrence of blockings was located around the date line, with a secondary region in southern South America (SSA) and its vicinities, with a third-rank region situated in southern Africa and its surroundings. The results were also stratified by the intensity and duration (persistence) of the events, and the annual and seasonal differences were discussed. Additionally, three different areas were defined to study the distribution of the blockings therein, with the Pacific region (110° E–80° W) having the maximum intensities and longest durations. Linear trends were estimated for the annual and the seasonal time series of the BI and for the number of episodes. On an annual basis, more frequent and the strongest events are expected at 180° E and their surroundings in the future. An alternative BI, using radiosonde data, was built for SSA at 58.50° W. The time evolution of this index was in general agreement with the one estimated from the reanalysis data at some longitudes.
Fil: Yuchechen, Adrian Enrique. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Facultad de Ciencias Agrarias; Argentina
Fil: Canziani, Pablo Osvaldo. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
BLOCKING
BLOCKING INDEX
RADIOSONDE DATA
REANALYSIS DATA
SOUTH AMERICA
SOUTHERN HEMISPHERE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/223721
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/223721
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Southern Hemisphere Blocking Index RevisitedYuchechen, Adrian EnriqueLakkis, Susan GabrielaCanziani, Pablo OsvaldoBLOCKINGBLOCKING INDEXRADIOSONDE DATAREANALYSIS DATASOUTH AMERICASOUTHERN HEMISPHEREhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (Formula presented.) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever (Formula presented.). The results were organized in longitudinal bands of a width of 10° in order to compare them with previous findings. The primary region for the occurrence of blockings was located around the date line, with a secondary region in southern South America (SSA) and its vicinities, with a third-rank region situated in southern Africa and its surroundings. The results were also stratified by the intensity and duration (persistence) of the events, and the annual and seasonal differences were discussed. Additionally, three different areas were defined to study the distribution of the blockings therein, with the Pacific region (110° E–80° W) having the maximum intensities and longest durations. Linear trends were estimated for the annual and the seasonal time series of the BI and for the number of episodes. On an annual basis, more frequent and the strongest events are expected at 180° E and their surroundings in the future. An alternative BI, using radiosonde data, was built for SSA at 58.50° W. The time evolution of this index was in general agreement with the one estimated from the reanalysis data at some longitudes.Fil: Yuchechen, Adrian Enrique. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Facultad de Ciencias Agrarias; ArgentinaFil: Canziani, Pablo Osvaldo. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaMDPI2022-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/223721Yuchechen, Adrian Enrique; Lakkis, Susan Gabriela; Canziani, Pablo Osvaldo; The Southern Hemisphere Blocking Index Revisited; MDPI; Atmosphere; 13; 9; 8-2022; 1-222073-4433CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4433/13/9/1343info:eu-repo/semantics/altIdentifier/doi/10.3390/atmos13091343info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:40Zoai:ri.conicet.gov.ar:11336/223721instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:10:40.907CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Southern Hemisphere Blocking Index Revisited
title The Southern Hemisphere Blocking Index Revisited
spellingShingle The Southern Hemisphere Blocking Index Revisited
Yuchechen, Adrian Enrique
BLOCKING
BLOCKING INDEX
RADIOSONDE DATA
REANALYSIS DATA
SOUTH AMERICA
SOUTHERN HEMISPHERE
title_short The Southern Hemisphere Blocking Index Revisited
title_full The Southern Hemisphere Blocking Index Revisited
title_fullStr The Southern Hemisphere Blocking Index Revisited
title_full_unstemmed The Southern Hemisphere Blocking Index Revisited
title_sort The Southern Hemisphere Blocking Index Revisited
dc.creator.none.fl_str_mv Yuchechen, Adrian Enrique
Lakkis, Susan Gabriela
Canziani, Pablo Osvaldo
author Yuchechen, Adrian Enrique
author_facet Yuchechen, Adrian Enrique
Lakkis, Susan Gabriela
Canziani, Pablo Osvaldo
author_role author
author2 Lakkis, Susan Gabriela
Canziani, Pablo Osvaldo
author2_role author
author
dc.subject.none.fl_str_mv BLOCKING
BLOCKING INDEX
RADIOSONDE DATA
REANALYSIS DATA
SOUTH AMERICA
SOUTHERN HEMISPHERE
topic BLOCKING
BLOCKING INDEX
RADIOSONDE DATA
REANALYSIS DATA
SOUTH AMERICA
SOUTHERN HEMISPHERE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (Formula presented.) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever (Formula presented.). The results were organized in longitudinal bands of a width of 10° in order to compare them with previous findings. The primary region for the occurrence of blockings was located around the date line, with a secondary region in southern South America (SSA) and its vicinities, with a third-rank region situated in southern Africa and its surroundings. The results were also stratified by the intensity and duration (persistence) of the events, and the annual and seasonal differences were discussed. Additionally, three different areas were defined to study the distribution of the blockings therein, with the Pacific region (110° E–80° W) having the maximum intensities and longest durations. Linear trends were estimated for the annual and the seasonal time series of the BI and for the number of episodes. On an annual basis, more frequent and the strongest events are expected at 180° E and their surroundings in the future. An alternative BI, using radiosonde data, was built for SSA at 58.50° W. The time evolution of this index was in general agreement with the one estimated from the reanalysis data at some longitudes.
Fil: Yuchechen, Adrian Enrique. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Facultad de Ciencias Agrarias; Argentina
Fil: Canziani, Pablo Osvaldo. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (Formula presented.) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever (Formula presented.). The results were organized in longitudinal bands of a width of 10° in order to compare them with previous findings. The primary region for the occurrence of blockings was located around the date line, with a secondary region in southern South America (SSA) and its vicinities, with a third-rank region situated in southern Africa and its surroundings. The results were also stratified by the intensity and duration (persistence) of the events, and the annual and seasonal differences were discussed. Additionally, three different areas were defined to study the distribution of the blockings therein, with the Pacific region (110° E–80° W) having the maximum intensities and longest durations. Linear trends were estimated for the annual and the seasonal time series of the BI and for the number of episodes. On an annual basis, more frequent and the strongest events are expected at 180° E and their surroundings in the future. An alternative BI, using radiosonde data, was built for SSA at 58.50° W. The time evolution of this index was in general agreement with the one estimated from the reanalysis data at some longitudes.
publishDate 2022
dc.date.none.fl_str_mv 2022-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/223721
Yuchechen, Adrian Enrique; Lakkis, Susan Gabriela; Canziani, Pablo Osvaldo; The Southern Hemisphere Blocking Index Revisited; MDPI; Atmosphere; 13; 9; 8-2022; 1-22
2073-4433
CONICET Digital
CONICET
url http://hdl.handle.net/11336/223721
identifier_str_mv Yuchechen, Adrian Enrique; Lakkis, Susan Gabriela; Canziani, Pablo Osvaldo; The Southern Hemisphere Blocking Index Revisited; MDPI; Atmosphere; 13; 9; 8-2022; 1-22
2073-4433
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4433/13/9/1343
info:eu-repo/semantics/altIdentifier/doi/10.3390/atmos13091343
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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