Quantifying the Dependence of Westerly Wind Bursts on the Large-Scale Tropical Pacific SST

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Quantifying the Dependence of Westerly Wind Bursts on the Large-Scale Tropical Pacific SST

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dc.contributor.author Tziperman, Eli
dc.contributor.author Yu, Lisan
dc.date.accessioned 2009-12-08T18:38:06Z
dc.date.issued 2007
dc.identifier.citation Tziperman, Eli, and Lisan Yu. 2007. Quantifying the dependence of westerly wind bursts on the large scale equatorial pacific SST. Journal of Climate 20(12): 2760-2768. en_US
dc.identifier.issn 0894-8755 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:3440299
dc.description.abstract The correlation between parameters characterizing observed westerly wind bursts (WWBs) in the equatorial Pacific and the large-scale SST is analyzed using singular value decomposition. The WWB parameters include the amplitude, location, scale, and probability of occurrence for a given SST distribution rather than the wind stress itself. This approach therefore allows for a nonlinear relationship between the SST and the wind signal of the WWBs. It is found that about half of the variance of the WWB parameters is explained by only two large-scale SST modes. The first mode represents a developed El Niño event, while the second mode represents the seasonal cycle. More specifically, the central longitude of WWBs, their longitudinal extent, and their probability seem to be determined to a significant degree by the ENSO-driven signal. The amplitude of the WWBs is found to be strongly influenced by the phase of the seasonal cycle. It is concluded that the WWBs, while partially stochastic, seem an inherent part of the large-scale deterministic ENSO dynamics. Implications for ENSO predictability and prediction are discussed. en_US
dc.description.sponsorship Earth and Planetary Sciences en_US
dc.language.iso en_US en_US
dc.publisher American Meteorological Society en_US
dc.relation.isversionof http://dx.doi.org/10.1175/JCLI4138a.1 en_US
dc.relation.hasversion http://www.deas.harvard.edu/climate/eli/reprints/Tziperman-Yu-2007.pdf
dash.license META_ONLY
dc.title Quantifying the Dependence of Westerly Wind Bursts on the Large-Scale Tropical Pacific SST en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Journal of Climate en_US
dash.depositing.author Tziperman, Eli
dash.embargo.until 10000-01-01

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  • FAS Scholarly Articles [7220]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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