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Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods

Cited 15 time in wos
Cited 15 time in scopus

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dc.contributor.authorChoi, Hyesun-
dc.contributor.authorKim, Baek-Min-
dc.contributor.authorChoi, Wookap-
dc.date.accessioned2020-10-20T04:37:33Z-
dc.date.available2020-10-20T04:37:33Z-
dc.date.issued2019-04-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10893-
dc.description.abstractIn existing literature, sudden stratospheric warming (SSW) events have been typically defined as displacement or split types. Detailed reexamination of SSW evolution has revealed that an SSW event often alters its type before and after the central day of the warming event. On the basis of this observation, we objectively define three types of SSW using wave amplitude: displacement?displacement (DD) type, displacement?split (DS) type, and split?split (SS) type. The geopotential height (GPH) amplitude of zonal wavenumbers 1 and 2 averaged over 55°?65°N at 10 hPa was used as a criterion for the classification. If the amplitude of zonal wavenumber 1 is larger (smaller) than that of wavenumber 2 before and after the central day of SSW, the event is regarded as a DD (SS) type. If the amplitude of zonal wavenumber 1 is larger than that of wavenumber 2 before the central day but is smaller after that day, the event is regarded as a DS type. The above classification algorithm has been applied to both reanalysis data and model results. We observe that conventional split-type SSW events identified by previous studies can be categorized as either DS- or SS-type events, each type of which exhibits different evolution characteristics. In particular, they are distinctively different during the pre-warming period. In the SS type, the characteristics of the conventional split type are more obvious, and the features that differ from those of the DD type are the most robust. The model results generally resemble the reanalysis data, particularly in the DD cases.en_US
dc.languageEnglishen_US
dc.language.isoenen_US
dc.subjectMeteorology & Atmospheric Sciencesen_US
dc.subject.classification해당사항없음en_US
dc.titleType Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periodsen_US
dc.title.alternative성층권 돌연승온 발생 전후 기간에 근거한 유형 분류en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationChoi, Hyesun, Kim, Baek-Min, Choi, Wookap. 2019. "Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods". <em>JOURNAL OF CLIMATE</em>, 32(8): 2349-2367.-
dc.citation.titleJOURNAL OF CLIMATEen_US
dc.citation.volume32en_US
dc.citation.number8en_US
dc.identifier.doi10.1175/JCLI-D-18-0223.1-
dc.citation.startPage2349en_US
dc.citation.endPage2367en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2017:8.14en_US
dc.subject.keywordArcticen_US
dc.subject.keywordWavesen_US
dc.subject.keywordatmosphericen_US
dc.subject.keywordAtmosphereen_US
dc.subject.keywordStratosphere-troposphere couplingen_US
dc.subject.keywordStratosphereen_US
dc.identifier.localId2019-0042-
dc.identifier.scopusid2-s2.0-85064221321-
dc.identifier.wosid000463599100003-
Appears in Collections  
2019-2019, Development and Application of the Korea Polar Prediction System (KPOPS) for Climate Change and Disasterous Weather Events (19-19) / Kim, Joo-Hong (PE19130)
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