겨울철 ESSAY (Experiment on Snow Storms At Yeongdong) 기간 동안 수증기량과 강수량의 연관성 분석
Analysis of the Relationship of Water Vapor with Precipitation for the Winter ESSAY (Experiment on Snow Storms At Yeongdong) Period
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참고문헌
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초록
Water vapor in the atmosphere is an important element that generates various meteorological phenomena and modifies a hydrological cycle. In general, the Yeongdong region has a lot of snow compared to the other regions in winter due to the complex topography and an adjacent East Sea. However, the phase change from water vapor to ice cloud and further snowfall has little been examined in detail. Therefore, in this study, we investigated phase change of liquid water in terms of a quantitative budget as well as time lag of water vapor conversion to snowfall in the ESSAY (Experiment on Snow Storms At Yeongdong) campaign that had been carried out from 2012 to 2015. First, we classified 3 distinctive synoptic patterns such as Low Crossing, Low Passing, and Stagnation. In general, the amount of water vapor of Low Crossing is highest, and Low Passing, Stagnation in order. The snowfall intensity of Stagnation is highest, whereas that of Low Crossing is the lowest, when a sharp increase in water vapor and accordingly a following increase in precipitation are shown with the remarkable time lag. Interestingly, the conversion rate of water vapor to snowfall seems to be higher (about 10%) in case of the Stagnation type in comparison with the other types at Bukgangneung, which appears to be attributable to significant cooling caused by cold surge in the lower atmosphere. Although the snowfall is generally preceded by an increase in water vapor, its amount converted into the snowfall is also controlled by the atmosphere condition such as temperature, super-saturation, etc. These results would be a fundamental resource for an improvement of snowfall forecast in the Yeongdong region and the successful experiment of weather modification in the near future.
Abstract
Water vapor in the atmosphere is an important element that generates various meteorological phenomena and modifies a hydrological cycle. In general, the Yeongdong region has a lot of snow compared to the other regions in winter due to the complex topography and an adjacent East Sea. However, the phase change from water vapor to ice cloud and further snowfall has little been examined in detail. Therefore, in this study, we investigated phase change of liquid water in terms of a quantitative budget as well as time lag of water vapor conversion to snowfall in the ESSAY (Experiment on Snow Storms At Yeongdong) campaign that had been carried out from 2012 to 2015. First, we classified 3 distinctive synoptic patterns such as Low Crossing, Low Passing, and Stagnation. In general, the amount of water vapor of Low Crossing is highest, and Low Passing, Stagnation in order. The snowfall intensity of Stagnation is highest, whereas that of Low Crossing is the lowest, when a sharp increase in water vapor and accordingly a following increase in precipitation are shown with the remarkable time lag. Interestingly, the conversion rate of water vapor to snowfall seems to be higher (about 10%) in case of the Stagnation type in comparison with the other types at Bukgangneung, which appears to be attributable to significant cooling caused by cold surge in the lower atmosphere. Although the snowfall is generally preceded by an increase in water vapor, its amount converted into the snowfall is also controlled by the atmosphere condition such as temperature, super-saturation, etc. These results would be a fundamental resource for an improvement of snowfall forecast in the Yeongdong region and the successful experiment of weather modification in the near future.
참고문헌 (17)
- Baelen, J. V., "Comparison of near-real time estimates of integrated water vapor derived with GPS Radiosonde, and microwave radiometer", J. Atmos. Oceanic Technol, 22, pp.201~210 (2005)
- Chahine, M. T., "The hydrological cycle and its influence on climate", Nature, 359, pp.373~380 (1992)
- 하지현, "MWR 관측치와 비교를 통한 GPS 가강수량 정밀도 검증", 대기, 17(3), pp.291~298 (2007), 한국기상학회
- 하지현, "Comparison of Atmospheric Water Vapor Profiles Obtained by GPS, MWR, and Radiosonde", 한국기상학회지, 46(3), pp.233~241 (2010), 한국기상학회
- Haertel, P. T., "Dynamics of 2-day equatorial waves", J. Atmos. Sci, 61, pp.2707~2721 (2004)
- Holloway, C. E., "Temporal relations of column water vapor and tropical precipitation", J. Atmos. Sci, 67, pp.1091~1105 (2010)
- Heavy rainfall in the taebaeg mountain range, "Hong, S. -G.", Natl. Inst. Meteor. Stud, 45~47, pp.MR-80-1 (1980)
- Jhun, J. -G., "A Study on the heavy snowfalls occurred in South Korea", Atmosphere, 30, pp.97~117 (1994)
- 김유준, "GPS 가강수량 산출을 위한 최소 관측세션 지속시간에 대한 분석", 대기, 24(3), pp.391~402 (2014), 한국기상학회[DOI]
- 권태영, "영동 지역의 극한 대설 사례와 관련된 종관 환경", 대기, 24(3), pp.343~364 (2014), 한국기상학회[DOI]
- 이재규, "A Trajectory Study on the Heavy Snowfall Phenomenon in Yeongdong Region of Korea", 한국기상학회지, 47(1), pp.45~62 (2011), 한국기상학회
- 이진화, "영동지역 대설 사례의 대기 하층 안정도 분석", 대기, 22(2), pp.209~219 (2012), 한국기상학회[DOI]
- Liou, Y. M., "Comparison of precipitable water vapor observations in the near tropics by GPS, microwave radiometer, and radiosondes", J. Appl. Meteor. Climatol, 40, pp.5~15 (2001)
- 남형구, "Characteristics of Easterly-Induced Snowfall in Yeongdong and Its Relationship to Air-Sea Temperature Difference", 한국기상학회지, 50(4), pp.541~552 (2014), 한국기상학회
- 송동섭, "2011년 강원 폭설과 GPS 가강수량의 상관성 분석", 한국측량학회지, 30(1), pp.97~104 (2012), 한국측량학회
- 양하영, "마이크로웨이브 라디오미터에서 관측된 가강수량 및 구름물량 특성 분석", 한국지구과학회지, 33(3), pp.233~241 (2012), 한국지구과학회[DOI]
- Yoo, C. -S., "Estimation and analysis of precipitable water", J. Korean Soc. Civil Eng, 24, pp.413~420 (2004)