Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño

The Northern Hemisphere (NH) polar stratospheric response to Central Pacific El Niño (CP-El Niño) events remains unclear. Contradictory results have been reported depending on the definition and events considered. We show that this is due to the prominent role of Stratospheric Sudden Warmings (SSWs)...

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Detalles Bibliográficos
Autores: Iza, Maddalen, Calvo, Natalia
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:TECNALIA Research & Innovation
Repositorio:TECNALIA Publications
Idioma:inglés
OAI Identifier:oai:dsp.tecnalia.com:11556/5284
Acceso en línea:https://hdl.handle.net/11556/5284
Access Level:acceso abierto
Palabra clave:Central Pacific ENSO
Eastern Pacific ENSO
flavors of ENSO
polar vortex
SSWs
stratospheric dynamics
Geophysics
General Earth and Planetary Sciences
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spelling Role of Stratospheric Sudden Warmings on the response to Central Pacific El NiñoIza, MaddalenCalvo, NataliaCentral Pacific ENSOEastern Pacific ENSOflavors of ENSOpolar vortexSSWsstratospheric dynamicsGeophysicsGeneral Earth and Planetary SciencesThe Northern Hemisphere (NH) polar stratospheric response to Central Pacific El Niño (CP-El Niño) events remains unclear. Contradictory results have been reported depending on the definition and events considered. We show that this is due to the prominent role of Stratospheric Sudden Warmings (SSWs), whose signal dominates the NH winter polar stratospheric response to CP-El Niño. In fact, the CP-El Niño signal is robust when the events are classified according to the occurrence of SSWs and displays opposite response in winters with and without SSWs. In the absence of SSWs, polar stratospheric responses to Central Pacific and Eastern Pacific El Niño are clearly distinguishable in early winter, in relation to differences in the Pacific-North American pattern. Our results demonstrate that the occurrence of SSWs needs to be taken into account when studying the stratospheric response to CP-El Niño and explain why different responses to CP-El Niño have been reported previously.WEATHER AND CLIMATE INTELLIGENCE FOR BUSINESS20242024-09-1320152015-04-1620152015-04-16journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articlehttps://hdl.handle.net/11556/5284reponame:TECNALIA Publicationsinstname:TECNALIA Research & InnovationInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:dsp.tecnalia.com:11556/52842026-06-12T12:42:27Z
dc.title.none.fl_str_mv Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
title Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
spellingShingle Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
Iza, Maddalen
Central Pacific ENSO
Eastern Pacific ENSO
flavors of ENSO
polar vortex
SSWs
stratospheric dynamics
Geophysics
General Earth and Planetary Sciences
title_short Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
title_full Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
title_fullStr Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
title_full_unstemmed Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
title_sort Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño
dc.creator.none.fl_str_mv Iza, Maddalen
Calvo, Natalia
author Iza, Maddalen
author_facet Iza, Maddalen
Calvo, Natalia
author_role author
author2 Calvo, Natalia
author2_role author
dc.contributor.none.fl_str_mv WEATHER AND CLIMATE INTELLIGENCE FOR BUSINESS
dc.subject.none.fl_str_mv Central Pacific ENSO
Eastern Pacific ENSO
flavors of ENSO
polar vortex
SSWs
stratospheric dynamics
Geophysics
General Earth and Planetary Sciences
topic Central Pacific ENSO
Eastern Pacific ENSO
flavors of ENSO
polar vortex
SSWs
stratospheric dynamics
Geophysics
General Earth and Planetary Sciences
description The Northern Hemisphere (NH) polar stratospheric response to Central Pacific El Niño (CP-El Niño) events remains unclear. Contradictory results have been reported depending on the definition and events considered. We show that this is due to the prominent role of Stratospheric Sudden Warmings (SSWs), whose signal dominates the NH winter polar stratospheric response to CP-El Niño. In fact, the CP-El Niño signal is robust when the events are classified according to the occurrence of SSWs and displays opposite response in winters with and without SSWs. In the absence of SSWs, polar stratospheric responses to Central Pacific and Eastern Pacific El Niño are clearly distinguishable in early winter, in relation to differences in the Pacific-North American pattern. Our results demonstrate that the occurrence of SSWs needs to be taken into account when studying the stratospheric response to CP-El Niño and explain why different responses to CP-El Niño have been reported previously.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-04-16
2015
2015-04-16
2024
2024-09-13
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/11556/5284
url https://hdl.handle.net/11556/5284
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:TECNALIA Publications
instname:TECNALIA Research & Innovation
instname_str TECNALIA Research & Innovation
reponame_str TECNALIA Publications
collection TECNALIA Publications
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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