Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models

Autores
Scheffler, Guillermo Federico; Pulido, Manuel Arturo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The impact of optimal parameters in a non-orographic gravity wave drag parameterization on the middle atmosphere circulation of the Southern hemisphere is examined. Optimal parameters are estimated using a data assimilation technique.  The proposed technique aims to reduce the delay in the winter vortex breakdown of the Southern Hemisphere found in general circulation models, which may be associated with a poor representation of gravity wave activity.  We introduce two different implementations of the parameter estimation method: an emph{offline} estimation method and a emph{sequential} estimation method. The delay in the zonal-mean zonal-wind transition  is largely alleviated by the optimal gravity wave parameters. The sequential method diminishes the model biases during winter vortex evolution, through gravity wave drag alone. On the other hand, the offline method accounts better for the unresolved-resolved wave interactions and the zonal-wind transition. We show that the final warmings in the lower mesosphere are mainly driven by planetary wave breaking. These are affected by changes in the gravity wave drag which are responsible for the stratospheric preconditioning. Parameter estimation during the vortex breakdown is a challenging task that requires the use of sophisticated estimation techniques, because there are strong interactions  between unresolved gravity wave drag and planetary waves.
Fil: Scheffler, Guillermo Federico. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pulido, Manuel Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado e Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Modelado e Innovación Tecnológica; Argentina
Materia
GRAVITY WAVE PARAMETERIZATIONS
PARAMETER ESTIMATION
MODEL BIAS
FINAL STRATOSPHERIC WARMING
Nivel de accesibilidad
acceso embargado
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:11336/24158
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation modelsScheffler, Guillermo FedericoPulido, Manuel ArturoGRAVITY WAVE PARAMETERIZATIONSPARAMETER ESTIMATIONMODEL BIASFINAL STRATOSPHERIC WARMINGhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The impact of optimal parameters in a non-orographic gravity wave drag parameterization on the middle atmosphere circulation of the Southern hemisphere is examined. Optimal parameters are estimated using a data assimilation technique.  The proposed technique aims to reduce the delay in the winter vortex breakdown of the Southern Hemisphere found in general circulation models, which may be associated with a poor representation of gravity wave activity.  We introduce two different implementations of the parameter estimation method: an emph{offline} estimation method and a emph{sequential} estimation method. The delay in the zonal-mean zonal-wind transition  is largely alleviated by the optimal gravity wave parameters. The sequential method diminishes the model biases during winter vortex evolution, through gravity wave drag alone. On the other hand, the offline method accounts better for the unresolved-resolved wave interactions and the zonal-wind transition. We show that the final warmings in the lower mesosphere are mainly driven by planetary wave breaking. These are affected by changes in the gravity wave drag which are responsible for the stratospheric preconditioning. Parameter estimation during the vortex breakdown is a challenging task that requires the use of sophisticated estimation techniques, because there are strong interactions  between unresolved gravity wave drag and planetary waves.Fil: Scheffler, Guillermo Federico. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pulido, Manuel Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado e Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Modelado e Innovación Tecnológica; ArgentinaJohn Wiley & Sons Ltd2017-05-19info:eu-repo/date/embargoEnd/2018-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24158Scheffler, Guillermo Federico; Pulido, Manuel Arturo; Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models; John Wiley & Sons Ltd; Quarterly Journal of the Royal Meteorological Society; 143; 706; 19-5-2017; 2157-21670035-90091477-870XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/qj.3074/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/qj.3074info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:16:43Zoai:ri.conicet.gov.ar:11336/24158instacron: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:34982025-10-15 15:16:43.809CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
title Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
spellingShingle Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
Scheffler, Guillermo Federico
GRAVITY WAVE PARAMETERIZATIONS
PARAMETER ESTIMATION
MODEL BIAS
FINAL STRATOSPHERIC WARMING
title_short Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
title_full Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
title_fullStr Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
title_full_unstemmed Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
title_sort Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models
dc.creator.none.fl_str_mv Scheffler, Guillermo Federico
Pulido, Manuel Arturo
author Scheffler, Guillermo Federico
author_facet Scheffler, Guillermo Federico
Pulido, Manuel Arturo
author_role author
author2 Pulido, Manuel Arturo
author2_role author
dc.subject.none.fl_str_mv GRAVITY WAVE PARAMETERIZATIONS
PARAMETER ESTIMATION
MODEL BIAS
FINAL STRATOSPHERIC WARMING
topic GRAVITY WAVE PARAMETERIZATIONS
PARAMETER ESTIMATION
MODEL BIAS
FINAL STRATOSPHERIC WARMING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The impact of optimal parameters in a non-orographic gravity wave drag parameterization on the middle atmosphere circulation of the Southern hemisphere is examined. Optimal parameters are estimated using a data assimilation technique.  The proposed technique aims to reduce the delay in the winter vortex breakdown of the Southern Hemisphere found in general circulation models, which may be associated with a poor representation of gravity wave activity.  We introduce two different implementations of the parameter estimation method: an emph{offline} estimation method and a emph{sequential} estimation method. The delay in the zonal-mean zonal-wind transition  is largely alleviated by the optimal gravity wave parameters. The sequential method diminishes the model biases during winter vortex evolution, through gravity wave drag alone. On the other hand, the offline method accounts better for the unresolved-resolved wave interactions and the zonal-wind transition. We show that the final warmings in the lower mesosphere are mainly driven by planetary wave breaking. These are affected by changes in the gravity wave drag which are responsible for the stratospheric preconditioning. Parameter estimation during the vortex breakdown is a challenging task that requires the use of sophisticated estimation techniques, because there are strong interactions  between unresolved gravity wave drag and planetary waves.
Fil: Scheffler, Guillermo Federico. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pulido, Manuel Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado e Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Modelado e Innovación Tecnológica; Argentina
description The impact of optimal parameters in a non-orographic gravity wave drag parameterization on the middle atmosphere circulation of the Southern hemisphere is examined. Optimal parameters are estimated using a data assimilation technique.  The proposed technique aims to reduce the delay in the winter vortex breakdown of the Southern Hemisphere found in general circulation models, which may be associated with a poor representation of gravity wave activity.  We introduce two different implementations of the parameter estimation method: an emph{offline} estimation method and a emph{sequential} estimation method. The delay in the zonal-mean zonal-wind transition  is largely alleviated by the optimal gravity wave parameters. The sequential method diminishes the model biases during winter vortex evolution, through gravity wave drag alone. On the other hand, the offline method accounts better for the unresolved-resolved wave interactions and the zonal-wind transition. We show that the final warmings in the lower mesosphere are mainly driven by planetary wave breaking. These are affected by changes in the gravity wave drag which are responsible for the stratospheric preconditioning. Parameter estimation during the vortex breakdown is a challenging task that requires the use of sophisticated estimation techniques, because there are strong interactions  between unresolved gravity wave drag and planetary waves.
publishDate 2017
dc.date.none.fl_str_mv 2017-05-19
info:eu-repo/date/embargoEnd/2018-02-01
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/11336/24158
Scheffler, Guillermo Federico; Pulido, Manuel Arturo; Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models; John Wiley & Sons Ltd; Quarterly Journal of the Royal Meteorological Society; 143; 706; 19-5-2017; 2157-2167
0035-9009
1477-870X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24158
identifier_str_mv Scheffler, Guillermo Federico; Pulido, Manuel Arturo; Estimation of gravity wave parameters to alleviate the delay in the Antarctic vortex breakup in general circulation models; John Wiley & Sons Ltd; Quarterly Journal of the Royal Meteorological Society; 143; 706; 19-5-2017; 2157-2167
0035-9009
1477-870X
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://onlinelibrary.wiley.com/doi/10.1002/qj.3074/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.3074
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv 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 13.22299

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