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dc.contributor.author
Yuchechen, Adrian Enrique  
dc.contributor.author
Lakkis, Susan Gabriela  
dc.contributor.author
Canziani, Pablo Osvaldo  
dc.date.available
2024-01-16T12:50:14Z  
dc.date.issued
2022-08  
dc.identifier.citation
Yuchechen, Adrian Enrique; Lakkis, Susan Gabriela; Canziani, Pablo Osvaldo; The Southern Hemisphere Blocking Index Revisited; MDPI; Atmosphere; 13; 9; 8-2022; 1-22  
dc.identifier.issn
2073-4433  
dc.identifier.uri
http://hdl.handle.net/11336/223721  
dc.description.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 (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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
MDPI  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
BLOCKING  
dc.subject
BLOCKING INDEX  
dc.subject
RADIOSONDE DATA  
dc.subject
REANALYSIS DATA  
dc.subject
SOUTH AMERICA  
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SOUTHERN HEMISPHERE  
dc.subject.classification
Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
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Investigación Climatológica  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.subject.classification
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
The Southern Hemisphere Blocking Index Revisited  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-01-16T10:34:35Z  
dc.journal.volume
13  
dc.journal.number
9  
dc.journal.pagination
1-22  
dc.journal.pais
Suiza  
dc.journal.ciudad
Basilea  
dc.description.fil
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  
dc.description.fil
Fil: Lakkis, Susan Gabriela. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Facultad de Ciencias Agrarias; Argentina  
dc.description.fil
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  
dc.journal.title
Atmosphere  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4433/13/9/1343  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/atmos13091343