The unique 2009-2010 El Nino event: A fast phase transition of warm pool El Nino to La Nina
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Title
- The unique 2009-2010 El Nino event: A fast phase transition of warm pool El Nino to La Nina
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Author(s)
- Kim, WonMoo; Yeh, Sang-Wook; Kim, Joo-Hong; Kug, Jong-Seong; Kwon, MinHo
- KIOST Author(s)
- Kwon, Min Ho(권민호)
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Alternative Author(s)
- 김원무; 국종성; 권민호
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Publication Year
- 2011-08-10
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Abstract
- The latest El Nino event in 2009-2010, which is classified as warm pool El Nino, holds a unique ground in that it marks the strongest warming signal in the central Pacific but rapidly decays to strong La Nina. The strong eastward-propagating cold anomaly at the subsurface level is found to be a key factor, and two possible mechanisms are suggested that resulted in the fast phase transition of the 2009-2010 event: 1) The anomalously warm Indian Ocean induces a surface easterly over the western edge of the Pacific, which generates the forced Kelvin waves. 2) The record-breaking high sea surface temperature in the central Pacific excites a strong Rossby response that is to be reflected as an upwelling Kelvin wave at the western boundary. The strong subsurface anomaly then propagates eastward and results in an unusually fast phase transition of the 2009-2010 warm pool El Nino event. Citation: Kim, W., S.-W. Yeh, J.-H. Kim, J.-S. Kug, and M. Kwon (2011), The unique 2009-2010 El Nino event: A fast phase transition of warm pool El Nino to La Nina, Geophys. Res. Lett., 38, L15809, doi:10.1029/2011GL048521.
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ISSN
- 0094-8276
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/3829
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DOI
- 10.1029/2011GL048521
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Bibliographic Citation
- GEOPHYSICAL RESEARCH LETTERS, v.38, 2011
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Publisher
- AMER GEOPHYSICAL UNION
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Subject
- SEA-SURFACE TEMPERATURE; EQUATORIAL WAVES; OCEAN; ENSO; REFLECTION; PACIFIC; ANOMALIES
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Type
- Article
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Language
- English
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Document Type
- Article
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