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자료유형
학술저널
저자정보
김인혜 (한국농촌경제연구원) 권태영 (강릉원주대학교) 김덕래 (국립환경과학원)
저널정보
한국기상학회 대기 대기 Vol.22 No.1
발행연도
2012.3
수록면
29 - 45 (17page)

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An unusual autumn storm developed rapidly in the western part of the East sea on the early morning of 23 October 2006. This storm produced a record-breaking heavy rain and strong wind in the northern and middle part of the Yeong-dong region; 24-h rainfall of 304 mm over Gangneung and wind speed exceeding 63.7 m s-¹ over Sokcho. In this study, MTSAT-1R(Multi-functional Transport Satellite) water vapor and infrared channel imagery are examined to find out some features which are dynamically associated with the development of the storm. These features may be the precursor signals of the rapidly developing storm and can be employed for very short range forecast and nowcasting of severe storm. The satellite features are summarized: 1) MTSAT-1R Water Vapor imagery exhibited that distinct dark region develops over the Yellow sea at about 12 hours before the occurrence of maximum rainfall about 1100 KST on 23 October 2006. After then, it changes gradually into drt instrusion. This dart region in the water vapor image is closely related with the positive anomaly in 500 hPa Potential Vorticity field. 2) In the Infrared imagery, low stratus (brightness temperature: 0~5℃) develops from near Bo-Hai bay and Shanfung peninsula and then dissipates partially on the western coast of Korean peninsula. These features are found at 10~12 hours before the maximum rainfall occurrence, which are associated with the cold and warm advection in the lower troposphere. 3) The 1R imagery reveals that two convective cloud cells (brightness temperature below -50℃) 5 hours before the maximum rainfall occurrence. These features remind that these must be the upward flow in the upper troposphere and the low-layer convergence over the same region of East sea. The time of maximum growth of the convective cloud agrees well with the time of the maximum rainfall.

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Abstract
1. 서론
2. 2006년 10월 23일 영동 위험기상 사례
3. 위성(MTSAT-1R) 영상의 특징
4. 예보선행조건
5. 요약 및 결론
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