한반도 중서부 국지성 집중호우와 관련된 열역학적 특성
Thermodynamic Characteristics Associated with Localized Torrential Rainfall Events in the Middle West Region of Korean Peninsula
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초록
Thermodynamic conditions related with localized torrential rainfall in the middlewest region of Korean peninsula are examined using radar rain rate and radiosonde observationaldata. Localized torrential rainfall events in this study are defined by three criteria base on1) any one of Automated Synoptic Observing System (ASOS) hourly rainfall exceeds30 mmhr−1 around Osan, 2) the rain (> 1 mmhr−1) area estimated from radar reflectivity is lessthan 20,000 km2, and 3) the rain (> 10 mmhr−1) cell is detected clearly and duration is shortthan 24 hr. As a result, 13 cases were selected during the summer season of 10 years (2004-13). It was found that the duration, the maximum rain area, and the maximum volumetric rainrate of convective cells (> 30 mmhr−1) are less than 9hr, smaller than 1,000 km2, and 15,000~60,000 m3s−1 in these cases. And a majority of cases shows the following thermodynamic characteristics:1) Convective Available Potential Energy (CAPE) > 800 Jkg−1, 2) Convective Inhibition(CIN) < 40 Jkg−1, 3) Total Precipitable Water (TPW) ≈ 55 mm, and 4) Storm RelativeHelicity (SRH) < 120 m2s−2. These cases mostly occurred in the afternoon. These thermodynamicconditions indicated that these cases were caused by strong atmospheric instability, liftingto overcome CIN, and sufficient moisture. The localized torrential rainfall occurred withdeep moisture convection result from the instability caused by convective heating.
Abstract
Thermodynamic conditions related with localized torrential rainfall in the middlewest region of Korean peninsula are examined using radar rain rate and radiosonde observationaldata. Localized torrential rainfall events in this study are defined by three criteria base on1) any one of Automated Synoptic Observing System (ASOS) hourly rainfall exceeds30 mmhr−1 around Osan, 2) the rain (> 1 mmhr−1) area estimated from radar reflectivity is lessthan 20,000 km2, and 3) the rain (> 10 mmhr−1) cell is detected clearly and duration is shortthan 24 hr. As a result, 13 cases were selected during the summer season of 10 years (2004-13). It was found that the duration, the maximum rain area, and the maximum volumetric rainrate of convective cells (> 30 mmhr−1) are less than 9hr, smaller than 1,000 km2, and 15,000~60,000 m3s−1 in these cases. And a majority of cases shows the following thermodynamic characteristics:1) Convective Available Potential Energy (CAPE) > 800 Jkg−1, 2) Convective Inhibition(CIN) < 40 Jkg−1, 3) Total Precipitable Water (TPW) ≈ 55 mm, and 4) Storm RelativeHelicity (SRH) < 120 m2s−2. These cases mostly occurred in the afternoon. These thermodynamicconditions indicated that these cases were caused by strong atmospheric instability, liftingto overcome CIN, and sufficient moisture. The localized torrential rainfall occurred withdeep moisture convection result from the instability caused by convective heating.
참고문헌 (24)
- Atlas, D., "Physical-synoptic variations of drop size parameter", Proc. 6th. Wea. Radar Conf., pp.21~29 (1957), Amer. Meteor. Soc.
- Beebe, R. G., "Types of air masses in which tornadoes occur", Bull. Amer. Meteor. Soc., 36, pp.349~350 (1955)
- Byers, H. R., "The thunderstorm", pp.287~ (1949), U.S. Government Printing Office
- Djuric, D., "Weather Analysis", pp.304~ (1994), Prentice-Hall, Inc.
- Severe thunderstorm forecasting, "Eblen, L. H.", National Weather Service Forecast Office, 42~, pp.NOAA Tech. memo. NWS SR-130 (1990)
- Fawbush, E. J., "The types of air masses in which American tornadoes form", Bull. Amer. Meteor. Soc., 35, pp.154~165 (1954)
- Fujiwara, M., "Raindrop-size distribution from individual storms", J. Atmos. Sci., 22, pp.585~591 (1965)
- 김도우, "2010년 여름철 수도권 집중관측기간에 나타난 호우 시스템의 대기연직구조", 한국지구과학회지, 33(2), pp.148~161 (2012), 한국지구과학회[DOI]
- 김기훈, "울릉도 특별관측 수행평가 및 강수특성 분석", 대기, 21(2), pp.185~196 (2011), 한국기상학회
- 김연희, "최근 기상특성과 재해발생이 고려된 호우특보 기준 개선", 대기, 21(4), pp.481~495 (2011), 한국기상학회
- Learn from case of the last 20 years, top 10heavy rainfall, "KMA", Korea Meteorological Administration, 47~ (2012)
- 권태영, "영동과 영서 호우의 특성 비교", 대기, 23(3), pp.245~264 (2013), 한국기상학회[DOI]
- 이태영, "Heavy Precipitation Systems over the Korean Peninsula and their Classification", 한국기상학회지, 43(4), pp.367~396 (2007), 한국기상학회
- Marshall, J. S., "The distribution of raindrop size", J. Atmos. Sci., 5, pp.165~166 (1948)
- McCaul, E. W. Jr., "Simulations of shallow supercell storms in landfalling hurricane environments", Mon. Wea. Rev., 124, pp.408~429 (1996)
- McCaul, E. W. Jr., "The sensitivity of simulated supercell structure and intensity to variations in the shapes of environmental buoyancy and shear profiles", Mon. Wea. Rev., 129, pp.664~687 (2001)
- McCaul, E. W. Jr., "The impact on simulated storm structure and intensity of variations in the mixed layer and moist layer depths", Mon. Wea. Rev., 130, pp.1722~1748 (2002)
- 남경엽, "청주부근에서 발생한 여름철 강우의 레이더-지상강우량계 관계에 관한 연구", 한국기상학회지, 39(4), pp.431~440 (2003), 한국기상학회
- Annual disaster report for 2012, "NEMA", National Emergency Management Agency, 1285~ (2013)
- 박창근, "장마전선 상에서 발생한 중규모 호우계 구조에 대한 연구", 대기, 18(4), pp.317~338 (2008), 한국기상학회
- Rasmussen, E. N., "A baseline climatology of sounding-derived supercell and tornado forecasting parameters", Wea. Forecasting, 13, pp.1148~1164 (1998)
- Thompson, R. L., "Close proximity soundings within supercell environments obtained from the Rapid Update Cycle", Wea. Forecasting, 18, pp.1243~1261 (2003)
- Weisman, M. L., "The dependence of numerically simulated convective storms on vertical wind shear and buoyancy", Mon. Wea. Rev., 110, pp.504~520 (1982)
- Woodley, W. L., "Comparison of gage and radar methods of convective rain measurement", J. Appl. Meteor., 14, pp.909~928 (1975)