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A Diagnostic Analysis on the Intensity Change of Typhoon NAKRI(0208)

태풍 나크리(0208)의 강도변화에 관한 진단적 분석

Kim, Baek-Jo;Kim, Kyung-Sik;Chang, Ki-Ho;Park, Jong-Kil
김백조;김경식;장기호;박종길

  • Received : 2012.11.19
  • Accepted : 2013.02.22
  • Published : 2013.03.29

Abstract

In this study, the cause of rapid intensity change of typhoon Nakri(0208) in view of point of a trough-typhoon interaction using diagnostic methods was examined based on 6-hourly GDAPS data from 10 to 13 July, 2002. At 0000 UTC 13 July, high PV(Potential Vorticity) region moved southeastward, reaching to the western edge of the Korean peninsula and near typhoon center at surface and there shows an increasing value of EFC(Eddy Momentum Flux Convergence). Also, as the trough and typhoon approach one another at the same time, the vertical shear(850-200 hPa) increases to more than 15 m/s. Thus, it might be concluded that the trough-typhoon interaction made intensified significantly, providing the fact that typhoon Nakri(0208) underwent substantial weakening while moving northward to around Jeju island.

Keywords

Typhoon Nakri(0208);Intensity change;Trough-typhoon interaction;Diagnostic methods

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Acknowledgement

Supported by : 국립기상연구소