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Sub-Seasonal Variability of ENSO Teleconnections in Western North America and Its Prediction Skill
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Chang-Hyun | - |
dc.contributor.author | Choi, Jung | - |
dc.contributor.author | Son, Seok-Woo | - |
dc.contributor.author | Kim, Daehyun | - |
dc.contributor.author | Yeh, Sang-Wook | - |
dc.contributor.author | Kug, Jong-Seong | - |
dc.date.accessioned | 2024-05-07T01:30:24Z | - |
dc.date.available | 2024-05-07T01:30:24Z | - |
dc.date.created | 2023-04-28 | - |
dc.date.created | 2023-04-28 | - |
dc.date.issued | 2023-03 | - |
dc.identifier.citation | Journal of geophysical research - Atmospheres, Vol.128 No.6, p. 037985 | - |
dc.identifier.issn | 2169-897X | - |
dc.identifier.uri | https://hdl.handle.net/10371/200934 | - |
dc.description.abstract | The El Niño–Southern Oscillation (ENSO) significantly affects the wintertime surface climate in western North America (WNA) via the Pacific/North American-like teleconnection pattern. Here, we show that the ENSO teleconnections over the WNA have significant sub-seasonal variation despite the persistence of ENSO-related tropical sea surface temperature anomalies throughout the entire winter. The ENSO–WNA teleconnections become substantially weakened in mid-winter, considerably weaker than those in early and late winter. This mid-winter weakening of the ENSO–WNA teleconnections is attributable to the convection over the equatorial Indian Ocean. In mid-December of El Niño winters, the anomalously-enhanced convection develops over the equatorial Indian Ocean and excites the teleconnection pattern with a 2-week time lag. This teleconnection largely opposes the Pacific/North American-like teleconnection pattern that is induced by anomalous convection over the equatorial central Pacific. Such sub-seasonal variation of ENSO teleconnections is poorly predicted by multi-model hindcasts, affecting the mid-latitude prediction skill. It particularly results in a poorer prediction skill of WNA surface air temperature in mid-winter than in late winter. This result highlights a need to better simulate the ENSO-related tropical convection and the associated teleconnections in the model to improve the long-lead prediction of the WNA surface climate. | - |
dc.language | 영어 | - |
dc.publisher | American Geophysical Union | - |
dc.title | Sub-Seasonal Variability of ENSO Teleconnections in Western North America and Its Prediction Skill | - |
dc.type | Article | - |
dc.identifier.doi | 10.1029/2022JD037985 | - |
dc.citation.journaltitle | Journal of geophysical research - Atmospheres | - |
dc.identifier.wosid | 000973474000001 | - |
dc.identifier.scopusid | 2-s2.0-85152588477 | - |
dc.citation.number | 6 | - |
dc.citation.startpage | 037985 | - |
dc.citation.volume | 128 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Son, Seok-Woo | - |
dc.contributor.affiliatedAuthor | Kim, Daehyun | - |
dc.contributor.affiliatedAuthor | Kug, Jong-Seong | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | ATMOSPHERIC RESPONSE | - |
dc.subject.keywordPlus | PRECIPITATION | - |
dc.subject.keywordPlus | CLIMATE | - |
dc.subject.keywordPlus | SENSITIVITY | - |
dc.subject.keywordPlus | PATTERNS | - |
dc.subject.keywordPlus | EXTREMES | - |
dc.subject.keywordPlus | PNA | - |
dc.subject.keywordAuthor | ENSO teleconnections | - |
dc.subject.keywordAuthor | western north America | - |
dc.subject.keywordAuthor | sub-seasonal variability | - |
dc.subject.keywordAuthor | Indian ocean | - |
dc.subject.keywordAuthor | sub-seasonal to seasonal prediction | - |
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- College of Natural Sciences
- Department of Earth and Environmental Sciences
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