Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Analysis of Available Time of Cloud Seeding in South Korea Using Radar and Rain Gauge Data During 2017-2022

2017-2022년 남한지역 레이더 및 지상 강수 자료를 이용한 인공강우 항공 실험 가능시간 분석

  • Yonghun Ro (Research Applications Department, National Institute of Meteorological Sciences) ;
  • Ki-Ho Chang (Research Applications Department, National Institute of Meteorological Sciences) ;
  • Yun-kyu Lim (Research Applications Department, National Institute of Meteorological Sciences) ;
  • Woonseon Jung (Research Applications Department, National Institute of Meteorological Sciences) ;
  • Jinwon Kim (Climate Change Research Team, National Institute of Meteorological Sciences) ;
  • Yong Hee Lee (Research Applications Department, National Institute of Meteorological Sciences)
  • 노용훈 (국립기상과학원 기상응용연구부) ;
  • 장기호 (국립기상과학원 기상응용연구부) ;
  • 임윤규 (국립기상과학원 기상응용연구부) ;
  • 정운선 (국립기상과학원 기상응용연구부) ;
  • 김진원 (국립기상과학원 기후변화예측연구팀) ;
  • 이용희 (국립기상과학원 기상응용연구부)
  • Received : 2023.11.08
  • Accepted : 2024.01.03
  • Published : 2024.01.31
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Abstract

The possible experimental time for cloud seeding was analyzed in South Korea. Rain gauge and radar precipitation data collected from September 2017 to August 2022 in from the three main target stations of cloud seeding experimentation (Daegwallyeong, Seoul, and Boryeong) were analyzed. In this study, the assumption that rainfall and cloud enhancement originating from the atmospheric updraft is a necessary condition for the cloud seeding experiment was applied. First, monthly and seasonal means of the precipitation duration and frequency were analyzed and cloud seeding experiments performed in the past were also reanalyzed. Results of analysis indicated that the experiments were possible during a monthly average of 7,025 minutes (117 times) in Daegwallyeong, 4,849 minutes (81 times) in Seoul, and 5,558 minutes (93 times) in Boryeong, if experimental limitations such as the insufficient availability of aircraft is not considered. The seasonal average results showed that the possible experimental time is the highest in summer at all three stations, which seems to be owing to the highest precipitable water in this period. Using the radar-converted precipitation data, the cloud seeding experiments were shown to be possible for 970-1,406 hours (11-16%) per year in these three regions in South Korea. This long possible experimental time suggests that longer duration, more than the previous period of 1 hour, cloud seeding experiments are available, and can contribute to achieving a large accumulated amount of enhanced rainfall.

Keywords

Acknowledgement

본 연구는 기상청 국립기상과학원 "기상조절 및 구름 물리 연구(KMA2018-00224)"의 지원을 받았습니다.

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