The Inverse Effect of Annual-Mean State and Annual-Cycle Changes on ENSO SCIE SCOPUS

DC Field Value Language
dc.contributor.author An, Soon-Il -
dc.contributor.author Ham, Yoo-Geun -
dc.contributor.author Kug, Jong-Seong -
dc.contributor.author Timmermann, Axel -
dc.contributor.author Choi, Jung -
dc.contributor.author Kang, In-Sik -
dc.date.accessioned 2020-04-20T08:55:04Z -
dc.date.available 2020-04-20T08:55:04Z -
dc.date.created 2020-01-28 -
dc.date.issued 2010-03 -
dc.identifier.issn 0894-8755 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/4125 -
dc.description.abstract The influence of the tropical Pacific annual-mean state on the annual-cycle amplitude and El Nino-Southern Oscillation (ENSO) variability is studied using the Max Planck Institute for Meteorology coupled general circulation model (CGCM) ECHAM5/Max Planck Institute Ocean Model (MPI-OM1). In a greenhouse warming experiment, an intensified annual cycle of sea surface temperature (SST) in the eastern tropical Pacific is associated with reduced ENSO variability, and vice versa. Analysis showed that the annual-mean states, especially the surface warming in the western Pacific and the thermocline deepening in the central Pacific, which is concurrent with the strong annual cycle, act to suppress ENSO amplitude and to intensify the annual-cycle amplitude, and vice versa. The western Pacific warming acts to reduce air-sea coupling strength and to shorten the ocean adjustment time scale, and the deepening of central Pacific thermocline acts to diminish vertical advection of the anomalous ocean temperature by the annual-mean upwelling. Consequently, ENSO activity is suppressed by the annual-mean states during the strong annual-cycle decades, and the opposite case associated with the weak annual-cycle decades is also true. Furthermore, the time integration of an intermediate ENSO model forced with different background state configurations, and a stability analysis of its linearized version, show that annual-mean background states during the weak (strong) annual-cycle decades are characterized by an enhanced (reduced) linear growth rate of ENSO or similarly large (small) variability of ENSO. However, the annual-cycle component of the background state changes cannot significantly modify ENSO variability. Using a hybrid coupled model, it is demonstrated that diagnosed annual-mean background states corresponding to a reduced (enhanced) annual cycle suppress (enhance) the development of the annual cycle of SST in the eastern equatorial Pacific, mainly through the weakening (intensifying) of zonal temperature advection of annual-mean SST by the annual-cycle zonal current. The above results support the idea that climate background state changes control both ENSO and the annual-cycle amplitude in opposing ways. -
dc.description.uri 1 -
dc.language English -
dc.publisher AMER METEOROLOGICAL SOC -
dc.subject NINO-SOUTHERN-OSCILLATION -
dc.subject GENERAL-CIRCULATION MODEL -
dc.subject SEA-SURFACE TEMPERATURE -
dc.subject EL-NINO -
dc.subject TROPICAL PACIFIC -
dc.subject SEASONAL CYCLE -
dc.subject INTERANNUAL VARIABILITY -
dc.subject EQUATORIAL PACIFIC -
dc.subject OCEAN CIRCULATION -
dc.subject COUPLED MODEL -
dc.title The Inverse Effect of Annual-Mean State and Annual-Cycle Changes on ENSO -
dc.type Article -
dc.citation.endPage 1110 -
dc.citation.startPage 1095 -
dc.citation.title JOURNAL OF CLIMATE -
dc.citation.volume 23 -
dc.citation.number 5 -
dc.contributor.alternativeName 국종성 -
dc.identifier.bibliographicCitation JOURNAL OF CLIMATE, v.23, no.5, pp.1095 - 1110 -
dc.identifier.doi 10.1175/2009JCLI2895.1 -
dc.identifier.scopusid 2-s2.0-77953655654 -
dc.identifier.wosid 000275366600006 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus NINO-SOUTHERN-OSCILLATION -
dc.subject.keywordPlus GENERAL-CIRCULATION MODEL -
dc.subject.keywordPlus SEA-SURFACE TEMPERATURE -
dc.subject.keywordPlus EL-NINO -
dc.subject.keywordPlus TROPICAL PACIFIC -
dc.subject.keywordPlus SEASONAL CYCLE -
dc.subject.keywordPlus INTERANNUAL VARIABILITY -
dc.subject.keywordPlus EQUATORIAL PACIFIC -
dc.subject.keywordPlus OCEAN CIRCULATION -
dc.subject.keywordPlus COUPLED MODEL -
dc.relation.journalWebOfScienceCategory Meteorology & Atmospheric Sciences -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Meteorology & Atmospheric Sciences -
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