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)...
| Autores: | ; |
|---|---|
| Tipo de documento: | Artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | TECNALIA Research & Innovation |
| Repositorio: | TECNALIA Publications |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:dsp.tecnalia.com:11556/5284 |
| Acceso en línea: | https://hdl.handle.net/11556/5284 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Central Pacific ENSO Eastern Pacific ENSO flavors of ENSO polar vortex SSWs stratospheric dynamics Geophysics General Earth and Planetary Sciences |
| _version_ | 1878731571052150784 |
|---|---|
| author | Iza, Maddalen |
| author2 | Calvo, Natalia |
| author2_role | author |
| author_browse | Calvo, Natalia Iza, Maddalen |
| author_facet | Iza, Maddalen Calvo, Natalia |
| author_role | author |
| collection | TECNALIA Publications |
| 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_3248ac8e2e5baefb8ec2cd3a04f46ea3 |
| institution | TECNALIA Research & Innovation |
| instname_str | TECNALIA Research & Innovation |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:dsp.tecnalia.com:11556/5284 |
| publishDate | 2015 |
| publishDateSort | 2015 |
| reponame_str | TECNALIA Publications |
| spelling | Role of Stratospheric Sudden Warmings on the response to Central Pacific El Niño Iza, Maddalen Calvo, Natalia Central Pacific ENSO Eastern Pacific ENSO flavors of ENSO polar vortex SSWs stratospheric dynamics Geophysics General Earth and Planetary Sciences 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. https://hdl.handle.net/11556/5284 |
| 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 | 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_short | 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 |
| topic | Central Pacific ENSO Eastern Pacific ENSO flavors of ENSO polar vortex SSWs stratospheric dynamics Geophysics General Earth and Planetary Sciences |
| topic_facet | Central Pacific ENSO Eastern Pacific ENSO flavors of ENSO polar vortex SSWs stratospheric dynamics Geophysics General Earth and Planetary Sciences |
| url | https://hdl.handle.net/11556/5284 |