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논문 기본 정보

자료유형
학술저널
저자정보
변가영 (서울대학교) 김정훈 (서울대학교) 박이준 (서울대학교)
저널정보
한국기상학회 대기 대기 Vol.34 No.4
발행연도
2024.11
수록면
397 - 415 (19page)

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초록· 키워드

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Reported tornado event occurred in Dangjin, Chungcheongnam-do at 0650~0730 UTC on 15 March 2019 was examined using Weather Research and Forecasting model with four nested domains (dx = 5, 1, 0.2, and 0.05 km). From synoptic analysis in ERA5 reanalysis data, eastward moving upper-level trough was developed rapidly in the Yellow Sea. Strong tropopause folding with Potential Vorticity Unit (PVU) higher than 1.5 PVU moved downward to 600-hPa level in mid troposphere following the trough over the location of tornado event. Under this large-scale background condition, surface front developed very intensively in the west coast of Korea along with strong low-level jet and moisture band at 850-hPa level. In domain 2, the maximum Bulk wind shear at Dorido point was 12.86 m s<sup>-1</sup>. Cold front evolved to be a comma cloud with upper-level trough and strong bulk vertical shear near Dangjin, which include eastward moving gust front revealed as a strong horizontal temperature gradient and convergence near the surface. In domains 3 and 4, the local maximum value of the simulated vertical vorticity (24 × 10 <sup>-2</sup> s<sup>-1</sup>) with strong updraft (8.18 m s<sup>-1</sup>) near the observed tornado event along with the surface gust front was found to be a possible area for tornadogenesis from the x-z and time-z cross-sections near the simulated tornado event. In the vorticity budget analysis, the local maximum of vertical vorticity during this event was generated significantly by tilting and stretching forcings.

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Abstract
1. 서론
2. 자료 및 연구방법
3. 연구 결과
4. 요약 및 결론
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