The southern hemisphere blocking index revisited
- Autores
- Yuchechen , Adrian E.; Lakkis, Susan Gabriela; Canziani, Pablo O.
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Yuchechen , Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Fil: Yuchechen , Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lakkis, S. Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; Argentina
Fil: Lakkis, S. Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Fil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina
Fil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Abstract: An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (z) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever z(35° S)−z(50° S)<0. 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. - Fuente
- Atmosphere Vol.13, No.9, 1343, 2022
- Materia
-
HEMISFERIO SUR
BLOQUEO
INDICE DE BLOQUEO
DATOS DE REANALISIS
DATOS DE RADIOSONDA - 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:123456789/15043
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spelling |
The southern hemisphere blocking index revisitedYuchechen , Adrian E.Lakkis, Susan GabrielaCanziani, Pablo O.HEMISFERIO SURBLOQUEOINDICE DE BLOQUEODATOS DE REANALISISDATOS DE RADIOSONDAFil: Yuchechen , Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaFil: Yuchechen , Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lakkis, S. Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; ArgentinaFil: Lakkis, S. Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaFil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; ArgentinaFil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAbstract: An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (z) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever z(35° S)−z(50° S)<0. 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.Multidisciplinar Digital Publishing Institute2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://repositorio.uca.edu.ar/handle/123456789/150432073-4433 (online)10.3390/atmos13091343Yuchechen, A.E., Lakkis, S.G., Canziani, P.O. The southern hemisphere blocking index revisited[en línea]. Atmosphere. 2022, 13 (9), 1343. doi: https://doi.org/10.3390/atmos13091343. Disponible en: https://repositorio.uca.edu.ar/handle/123456789/15043Atmosphere Vol.13, No.9, 1343, 2022reponame:Repositorio Institucional (UCA)instname:Pontificia Universidad Católica ArgentinaengAmérica del Surinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/2025-07-03T10:58:50Zoai:ucacris:123456789/15043instacron:UCAInstitucionalhttps://repositorio.uca.edu.ar/Universidad privadaNo correspondehttps://repositorio.uca.edu.ar/oaiclaudia_fernandez@uca.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:25852025-07-03 10:58:50.278Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentinafalse |
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 E. HEMISFERIO SUR BLOQUEO INDICE DE BLOQUEO DATOS DE REANALISIS DATOS DE RADIOSONDA |
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 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 |
HEMISFERIO SUR BLOQUEO INDICE DE BLOQUEO DATOS DE REANALISIS DATOS DE RADIOSONDA |
topic |
HEMISFERIO SUR BLOQUEO INDICE DE BLOQUEO DATOS DE REANALISIS DATOS DE RADIOSONDA |
dc.description.none.fl_txt_mv |
Fil: Yuchechen , Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Fil: Yuchechen , Adrian E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lakkis, S. Gabriela. Pontificia Universidad Católica Argentina. Facultad de Ingeniería y Ciencias Agrarias; Argentina Fil: Lakkis, S. Gabriela. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Fil: Canziani, Pablo O. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina Fil: Canziani, Pablo O. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Abstract: An updated climatology for the occurrence of blockings in the Southern Hemisphere (SH) using daily reanalysis data from 1948–2021 is presented. Geopotential height (z) at 500 hPa was the working variable. The blocking index (BI) was defined for every 2.5° of longitude whenever z(35° S)−z(50° S)<0. 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. |
description |
Fil: Yuchechen , Adrian E. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires. Unidad de Investigación y Desarrollo de las Ingenierías; Argentina |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022 |
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 |
https://repositorio.uca.edu.ar/handle/123456789/15043 2073-4433 (online) 10.3390/atmos13091343 Yuchechen, A.E., Lakkis, S.G., Canziani, P.O. The southern hemisphere blocking index revisited[en línea]. Atmosphere. 2022, 13 (9), 1343. doi: https://doi.org/10.3390/atmos13091343. Disponible en: https://repositorio.uca.edu.ar/handle/123456789/15043 |
url |
https://repositorio.uca.edu.ar/handle/123456789/15043 |
identifier_str_mv |
2073-4433 (online) 10.3390/atmos13091343 Yuchechen, A.E., Lakkis, S.G., Canziani, P.O. The southern hemisphere blocking index revisited[en línea]. Atmosphere. 2022, 13 (9), 1343. doi: https://doi.org/10.3390/atmos13091343. Disponible en: https://repositorio.uca.edu.ar/handle/123456789/15043 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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.coverage.none.fl_str_mv |
América del Sur |
dc.publisher.none.fl_str_mv |
Multidisciplinar Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinar Digital Publishing Institute |
dc.source.none.fl_str_mv |
Atmosphere Vol.13, No.9, 1343, 2022 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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1836638364719120384 |
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13.13397 |