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논문 기본 정보

자료유형
학술저널
저자정보
정우미 (기상청) 석미경 (기상청) 최윤 (기상청) 김광호 (기상청)
저널정보
한국기상학회 대기 대기 Vol.30 No.4
발행연도
2020.12
수록면
347 - 360 (14page)

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초록· 키워드

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The automatic algorithm optimized for the Korean Peninsula was developed to detect and track the center of typhoon based on a geometrical method using high-resolution retrieved WISSDOM (WInd Syntheses System using DOppler Measurements) wind and reflectivity data. This algorithm analyzes the center of typhoon by detecting the geometric circular structure of the typhoon’s eye in radar reflectivity and vorticity 2D field data. For optimizing the algorithm, the main factors of the algorithm were selected and the optimal thresholds were determined through sensitivity experiments for each factor. The center of typhoon was detected for 5 typhoon cases that approached or landed on Korean Peninsula. The performance was verified by comparing and analyzing from the best track of Korea Meteorological Administration (KMA). The detection rate for vorticity use was 15% higher on average than that for reflectivity use. The detection rate for vorticity use was up to 90% for DIANMU case in 2010. The difference between the detected locations and best tracks of KMA was 0.2˚ on average when using reflectivity and vorticity. After the optimization, the detection rate was improved overall, especially the detection rate more increased when using reflectivity than using vorticity. And the difference of location was reduced to 0.18˚ on average, increasing the accuracy.

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Abstract
1. 서론
2. 자료 및 방법
3. 분석 결과
4. 요약 및 결론
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