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Korean Meteorological Society (한국기상학회)
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Observation and Understanding of Snowfall Characteristics in the Yeongdong Region

영동 지역에서 강설 특성 관측 및 이해

  • Kim, Byung-Gon (Department of Atmospheric Environmental Sciences, Gangneung-Wonju National University) ;
  • Kim, Mi-Gyeong (Department of Atmospheric Environmental Sciences, Gangneung-Wonju National University) ;
  • Kwon, Tae-Young (Department of Atmospheric Environmental Sciences, Gangneung-Wonju National University) ;
  • Park, Gyun-Myung (Observation.Forecast Division, Gangwon Regional Meteorological Office) ;
  • Han, Yun-Deok (Observation.Forecast Division, Gangwon Regional Meteorological Office) ;
  • Kim, Seung-Bum (High Impact Weather Research Department, National Institute of Meteorological Sciences) ;
  • Chang, Ki-Ho (Convergence Meteorological Research Department, National Institute of Meteorological Sciences)
  • 김병곤 (강릉원주대학교 대기환경과학과) ;
  • 김미경 (강릉원주대학교 대기환경과학과) ;
  • 권태영 (강릉원주대학교 대기환경과학과) ;
  • 박균명 (강원지방기상청 관측.예보과) ;
  • 한윤덕 (강원지방기상청 관측.예보과) ;
  • 김승범 (국립기상과학원 재해기상연구부) ;
  • 장기호 (국립기상과학원 융합기술연구부)
  • Received : 2021.05.31
  • Accepted : 2021.08.29
  • Published : 2021.11.30
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Abstract

Yeongdong has frequently suffered from severe snowstorms, which generally give rise to societal and economic damages to the region in winter. In order to understand its mechanism, there has been a long-term measurement campaign, based on the rawinsonde measurements for every snowfall event at Gangneung since 2014. The previous observations showed that a typical heavy snowfall is generally accompanied with northerly or northeasterly flow below the snow clouds, generated by cold air outbreak over the relatively warmer East Sea. An intensive and multi-institutional measurement campaign has been launched in 2019 mainly in collaboration with Gangwon Regional Office of Meteorology and National Institute of Meteorological Studies of Korean Meteorological Administration, with a special emphasis on winter snowfall and spring windstorm altogether. The experiment spanned largely from February to April with comprehensive measurements of frequent rawinsonde measurements at a super site (Gangneung) with continuous remote sensings of wind profiler, microwave radiometers and weather radar etc. Additional measurements were added to the campaign, such as aircraft dropsonde measurements and shipboard rawinsonde soundings. One of the fruitful outcomes is, so far, to identify a couple of cold air damming occurrences, featuring lowest temperature below 1 km, which hamper the convergence zone and snow clouds from penetrating inland, and eventually make it harder to forecast snowfall in terms of its location and timing. This kind of comprehensive observation campaign with continuous remote sensings and intensive additional measurement platforms should be conducted to understand various orographic precipitation in the complex terrain like Yeongdong.

Keywords

Acknowledgement

이 연구는 강원지방기상청 연구개발사업인 '강원영 동풍·강풍의 특화된 관측·예보기술 개발' 사업과 국립기상과학원 융합기술연구부의 '인공강우 실험 수치모델링기술 개발 연구' 사업의 지원으로 수행되었습니다. 그리고, 본 논문의 개선을 위해 좋은 의견 및 조언을 해 주신 두 분 심사위원께 감사드립니다.

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