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Korean Meteorological Society (한국기상학회)
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Analysis of the Effects of Airborne Snowfall Enhancement Experiments Based on Atmospheric Stability: A Case Study of the IJCO-WCE 2019 Campaign

대기 안정도에 따른 인공증설 항공실험 효과 분석: IJCO-WCE 2019 캠페인 사례 연구

  • A-Reum Ko (Research Applications Department, National Institute of Meteorological Sciences, Korea Meteorological Administration) ;
  • Bu-Yo Kim (Research Applications Department, National Institute of Meteorological Sciences, Korea Meteorological Administration) ;
  • Woonseon Jung (Research Applications Department, National Institute of Meteorological Sciences, Korea Meteorological Administration) ;
  • Ji-Hyoung Kim (Peterson Projects & Solutions Korea) ;
  • Jung Mo Ku (Water Resource Information Center of Han River Flood Control Office, Ministry of Environment) ;
  • Ki-Ho Chang (Research Applications Department, National Institute of Meteorological Sciences, Korea Meteorological Administration) ;
  • Joo Wan Cha (Research Applications Department, National Institute of Meteorological Sciences, Korea Meteorological Administration) ;
  • Chulkyu Lee (Observation Research Department, National Institute of Meteorological Sciences) ;
  • Yong Hee Lee (Numerical Data Application Division, Numerical Modeling Center, Korea Meteorological Administration)
  • 고아름 (국립기상과학원 기상응용연구부) ;
  • 김부요 (국립기상과학원 기상응용연구부) ;
  • 정운선 (국립기상과학원 기상응용연구부) ;
  • 김지형 (피터슨프로젝트앤솔루션) ;
  • 구정모 (환경부 한강홍수통제소 수자원정보센터) ;
  • 장기호 (국립기상과학원 기상응용연구부) ;
  • 차주완 (국립기상과학원 기상응용연구부) ;
  • 이철규 (국립기상과학원 관측연구부) ;
  • 이용희 (수치모델링센터 수치자료응용과)
  • Received : 2024.06.25
  • Accepted : 2024.10.16
  • Published : 2024.11.30
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Abstract

This study analyzes and compares the results of airborne snowfall enhancement experiments conducted on November 25 and 28, 2019, as part of the International Joint Cloud Observation and Weather Control Experiment (IJCO-WCE) 2019 campaign. The objective was to assess the effects of experimental interventions on cloud precipitation patterns. To address the challenges in verifying artificial snowfall enhancement, this study proposes an innovative approach, utilizing a post-experiment zigzag flight path for in-situ observations. This approach allowed for detailed comparisons between affected and unaffected cloud regions. Precipitation was observed in the target area on the leeward side on November 25, whereas no precipitation was recorded during the November 28 experiment. We concluded that airborne snowfall enhancement is more effective when the lower atmosphere is unstable at the rear of a trough, as confirmed by changes in the distribution of precipitation particles in the clouds and on the ground. Two identical flight experiments were conducted using the KMA/NIMS atmospheric research aircraft, allowing detailed observations. Data collected from onboard cloud observation instruments and six ground stations facilitated detailed analyses of changes in the concentration and size distribution of cloud particles (e.g., supercooled droplets, ice crystals, and snow particles). The method of comparing particle sizes between clouds affected and unaffected by the experiments is used to verify the effectiveness of artificial snowfall enhancement techniques. This methodology could be widely adopted in future studies to improve our understanding of weather modification strategies.

Keywords

Acknowledgement

본 연구는 기상청 국립기상과학원 「기상조절 및 구름물리 연구(KMA2018-00224)」 사업의 지원으로 수행되었습니다. 또한, IJCO-WCE 2019 캠페인에 공동으로 참여하여 항공 관측 및 실험 노하우, 항공관측장비 검·교정에 도움을 주신 DMT사의 Dr. Duncan Axisa, Dr. Darrel Baumgardner, Dr. Greg Kok, Mr. Spencer Faber, Ms. Nicole Savage, Mr. Vinayaka Ruge, (주)APM, (주)SPECORE의 과학자 및 기술자분들께 감사드립니다. 또한 본 연구의 개선을 위해 좋은 의견을 제시해 주신 두 분의 심사위원님께 감사를 드립니다.

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