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Gangwon Yeongdong Wind Experiments (G-WEX) Pilot Study: Downslope windstorms in the Taebaek Mountains, South Korea

강원영동 강풍 관측설계와 예비 관측결과

  • Kim, Ji-Eun (Observation Division, Gangwon Regional Office of Meteorology) ;
  • Kwon, Tae-Yong (Department of Atmospheric and Environmental Sciences, Gangeneung-Wonju National University) ;
  • Park, Gyun-Myeong (Korea Meteorological Administration) ;
  • Han, Youn-Deok (Forecast Division, Gangwon Regional Office of Meteorology) ;
  • Shin, Dong-Hyun (Korea Meteorological Administration)
  • 김지은 (강원지방기상청 관측과) ;
  • 권태영 (강릉원주대학교 대기환경과학과) ;
  • 박균명 (기상청) ;
  • 한윤덕 (강원지방기상청 예보과) ;
  • 신동현 (기상청)
  • Received : 2021.05.07
  • Accepted : 2021.09.14
  • Published : 2021.11.30

Abstract

"Gangwon Yeongdong Wind Experiments (G-WEX) Pilot Study: Downslope windstorms in the Taebaek Mountains, South Korea" is promoted based on joint organization by Gangwon Regional Office of Meteorology and National Institute of Meteorological Research and participation by 12 institutions to understand the mechanism in development of Yeongdong wind phenomena. The special observation (G-WEX) involved total of 5 intensive observations in March 2020 and April 2020. To collect the data necessary for the research on Yeongdong wind phenomena, (1) high-resolution surface observation network was used to examine surface wind and (2) atmospheric soundings were observed by using Rawinsonde, Wind profiler, Wind Lidar, and Drone. This study covers the detailed information on the special observational experiments for downslope windstorms in the leeward of the Taebaek Mountains, named as the Yeongdong wind, including the observational strategies, experimental designs, and pilot studies during the Intensified Observing Period (IOPs). According to 2020 G-WEX observation results, downslope windstorms were observed in 2~3 km of upper atmosphere when the strong winds happened around the top of the mountain near Daegwallyeong. Also, dry adiabatic expansion related to downslope windstorms caused temperature rise and led to formation of an inversion layer in altitude below 2.5 km. Bands of strong wind were located right under the altitude where downslope windstorms are observed with temporal rise of the temperature. As these are preliminary observation results, there needs to be continuous related researches and high-resolution weather observation.

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