Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere

Autores
Yuchechen, Adrian Enrique; Bischoff, Susana A.; Canziani, Pablo Osvaldo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In order to provide further insights into the relationships between the tropopause and different mandatory levels, this paper discusses the coupling between standardized tropopause height anomalies (STHAs) and standardized 500-hPa and 100-hPa height anomalies (S5HAs and S1HAs, respectively) within the 'climatic year' for three sets of upper-air stations located approximately along 20°S, 30°S and 45 °S. Data used in this research consists in a radiosonde database spanning the period 1973-2007. The mandatory levels are supposed to be included in each radiosonde profile. The tropopause, on the other hand, is calculated from the significant levels available for each sounding using the lapse rate definition. After applying a selection procedure, a basic statistical analysis combined with Fourier analysis is carried out in order to build up the standardized variables. Empirical orthogonal functions (EOFs) in S-mode are used to get the normal modes of oscillation as well as their time evolution, for STHA/S5HA as well as for STHA/S1HA coupling, separately, within the aforementioned latitudes. Overall, there are definite cycles in the time evolution associated with each EOF structure at all three latitudes, the semiannual wave playing the most important role in most of the cases. Nevertheless, 20°S seems to be the only latitude driven by diabatic heating cycles in the middle atmosphere. Certainly, EOF1 at this latitude has a semiannual behaviour and seems to be strongly influenced by the tropical convection seasonality. Apparently, the convectively driven release of latent heat in the middle troposphere affects the time evolution of the EOF1 structure. By contrast, the vertical propagation of planetary waves is raised as a possible explanation for the EOF1 and EOF2 behaviour at latitudes beyond 20°S, in view of the close connection existent between the semiannual oscillation (SAO) and the reversion in the direction of the zonal wind.
Fil: Yuchechen, Adrian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; Argentina
Fil: Bischoff, Susana A.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Canziani, Pablo Osvaldo. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
COUPLING
EOF ANALYSIS
MANDATORY LEVELS
SINGLE TROPOPAUSE
SOUTHERN HEMISPHERE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/98854
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/98854
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern HemisphereYuchechen, Adrian EnriqueBischoff, Susana A.Canziani, Pablo OsvaldoCOUPLINGEOF ANALYSISMANDATORY LEVELSSINGLE TROPOPAUSESOUTHERN HEMISPHEREhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In order to provide further insights into the relationships between the tropopause and different mandatory levels, this paper discusses the coupling between standardized tropopause height anomalies (STHAs) and standardized 500-hPa and 100-hPa height anomalies (S5HAs and S1HAs, respectively) within the 'climatic year' for three sets of upper-air stations located approximately along 20°S, 30°S and 45 °S. Data used in this research consists in a radiosonde database spanning the period 1973-2007. The mandatory levels are supposed to be included in each radiosonde profile. The tropopause, on the other hand, is calculated from the significant levels available for each sounding using the lapse rate definition. After applying a selection procedure, a basic statistical analysis combined with Fourier analysis is carried out in order to build up the standardized variables. Empirical orthogonal functions (EOFs) in S-mode are used to get the normal modes of oscillation as well as their time evolution, for STHA/S5HA as well as for STHA/S1HA coupling, separately, within the aforementioned latitudes. Overall, there are definite cycles in the time evolution associated with each EOF structure at all three latitudes, the semiannual wave playing the most important role in most of the cases. Nevertheless, 20°S seems to be the only latitude driven by diabatic heating cycles in the middle atmosphere. Certainly, EOF1 at this latitude has a semiannual behaviour and seems to be strongly influenced by the tropical convection seasonality. Apparently, the convectively driven release of latent heat in the middle troposphere affects the time evolution of the EOF1 structure. By contrast, the vertical propagation of planetary waves is raised as a possible explanation for the EOF1 and EOF2 behaviour at latitudes beyond 20°S, in view of the close connection existent between the semiannual oscillation (SAO) and the reversion in the direction of the zonal wind.Fil: Yuchechen, Adrian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; ArgentinaFil: Bischoff, Susana A.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; ArgentinaFil: Canziani, Pablo Osvaldo. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaJohn Wiley & Sons Ltd2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/98854Yuchechen, Adrian Enrique; Bischoff, Susana A.; Canziani, Pablo Osvaldo; Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere; John Wiley & Sons Ltd; International Journal of Climatology; 30; 4; 3-2010; 492-5080899-8418CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://doi.wiley.com/10.1002/joc.1914info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.1914info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:03:54Zoai:ri.conicet.gov.ar:11336/98854instacron: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:34982025-09-10 13:03:54.474CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
title Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
spellingShingle Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
Yuchechen, Adrian Enrique
COUPLING
EOF ANALYSIS
MANDATORY LEVELS
SINGLE TROPOPAUSE
SOUTHERN HEMISPHERE
title_short Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
title_full Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
title_fullStr Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
title_full_unstemmed Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
title_sort Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere
dc.creator.none.fl_str_mv Yuchechen, Adrian Enrique
Bischoff, Susana A.
Canziani, Pablo Osvaldo
author Yuchechen, Adrian Enrique
author_facet Yuchechen, Adrian Enrique
Bischoff, Susana A.
Canziani, Pablo Osvaldo
author_role author
author2 Bischoff, Susana A.
Canziani, Pablo Osvaldo
author2_role author
author
dc.subject.none.fl_str_mv COUPLING
EOF ANALYSIS
MANDATORY LEVELS
SINGLE TROPOPAUSE
SOUTHERN HEMISPHERE
topic COUPLING
EOF ANALYSIS
MANDATORY LEVELS
SINGLE TROPOPAUSE
SOUTHERN HEMISPHERE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In order to provide further insights into the relationships between the tropopause and different mandatory levels, this paper discusses the coupling between standardized tropopause height anomalies (STHAs) and standardized 500-hPa and 100-hPa height anomalies (S5HAs and S1HAs, respectively) within the 'climatic year' for three sets of upper-air stations located approximately along 20°S, 30°S and 45 °S. Data used in this research consists in a radiosonde database spanning the period 1973-2007. The mandatory levels are supposed to be included in each radiosonde profile. The tropopause, on the other hand, is calculated from the significant levels available for each sounding using the lapse rate definition. After applying a selection procedure, a basic statistical analysis combined with Fourier analysis is carried out in order to build up the standardized variables. Empirical orthogonal functions (EOFs) in S-mode are used to get the normal modes of oscillation as well as their time evolution, for STHA/S5HA as well as for STHA/S1HA coupling, separately, within the aforementioned latitudes. Overall, there are definite cycles in the time evolution associated with each EOF structure at all three latitudes, the semiannual wave playing the most important role in most of the cases. Nevertheless, 20°S seems to be the only latitude driven by diabatic heating cycles in the middle atmosphere. Certainly, EOF1 at this latitude has a semiannual behaviour and seems to be strongly influenced by the tropical convection seasonality. Apparently, the convectively driven release of latent heat in the middle troposphere affects the time evolution of the EOF1 structure. By contrast, the vertical propagation of planetary waves is raised as a possible explanation for the EOF1 and EOF2 behaviour at latitudes beyond 20°S, in view of the close connection existent between the semiannual oscillation (SAO) and the reversion in the direction of the zonal wind.
Fil: Yuchechen, Adrian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; Argentina
Fil: Bischoff, Susana A.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Canziani, Pablo Osvaldo. Pontificia Universidad Católica Argentina "Santa María de los Buenos Aires". Secretaría Académica. Dirección de Investigaciones. Equipo Estudios de Procesos Atmosféricos en el Cambio Global; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description In order to provide further insights into the relationships between the tropopause and different mandatory levels, this paper discusses the coupling between standardized tropopause height anomalies (STHAs) and standardized 500-hPa and 100-hPa height anomalies (S5HAs and S1HAs, respectively) within the 'climatic year' for three sets of upper-air stations located approximately along 20°S, 30°S and 45 °S. Data used in this research consists in a radiosonde database spanning the period 1973-2007. The mandatory levels are supposed to be included in each radiosonde profile. The tropopause, on the other hand, is calculated from the significant levels available for each sounding using the lapse rate definition. After applying a selection procedure, a basic statistical analysis combined with Fourier analysis is carried out in order to build up the standardized variables. Empirical orthogonal functions (EOFs) in S-mode are used to get the normal modes of oscillation as well as their time evolution, for STHA/S5HA as well as for STHA/S1HA coupling, separately, within the aforementioned latitudes. Overall, there are definite cycles in the time evolution associated with each EOF structure at all three latitudes, the semiannual wave playing the most important role in most of the cases. Nevertheless, 20°S seems to be the only latitude driven by diabatic heating cycles in the middle atmosphere. Certainly, EOF1 at this latitude has a semiannual behaviour and seems to be strongly influenced by the tropical convection seasonality. Apparently, the convectively driven release of latent heat in the middle troposphere affects the time evolution of the EOF1 structure. By contrast, the vertical propagation of planetary waves is raised as a possible explanation for the EOF1 and EOF2 behaviour at latitudes beyond 20°S, in view of the close connection existent between the semiannual oscillation (SAO) and the reversion in the direction of the zonal wind.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/98854
Yuchechen, Adrian Enrique; Bischoff, Susana A.; Canziani, Pablo Osvaldo; Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere; John Wiley & Sons Ltd; International Journal of Climatology; 30; 4; 3-2010; 492-508
0899-8418
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98854
identifier_str_mv Yuchechen, Adrian Enrique; Bischoff, Susana A.; Canziani, Pablo Osvaldo; Latitudinal height couplings between single tropopause and 500 and 100 hpa within the Southern Hemisphere; John Wiley & Sons Ltd; International Journal of Climatology; 30; 4; 3-2010; 492-508
0899-8418
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://doi.wiley.com/10.1002/joc.1914
info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.1914
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
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 12.993085

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