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Three-dimensional Analysis of Heavy Rainfall Using KLAPS Re-analysis Data
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  • Journal title : Atmosphere
  • Volume 26, Issue 1,  2016, pp.97-109
  • Publisher : Korean Meteorological Society
  • DOI : 10.14191/Atmos.2016.26.1.097
 Title & Authors
Three-dimensional Analysis of Heavy Rainfall Using KLAPS Re-analysis Data
Jang, Min; You, Cheol-Hwan; Jee, Joon-Bum; Park, Sung-Hwa; Kim, Sang-il; Choi, Young-Jean;
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Heavy rainfall (over ) system associated with unstable atmospheric conditions occurred over the Seoul metropolitan area on 27 July 2011. To investigate the heavy rainfall system, we used three-dimensional data from Korea Local Analysis and Prediction System (KLAPS) reanalysis data and analysed the structure of the precipitation system, kinematic characteristics, thermodynamic properties, and Meteorological condition. The existence of Upper-Level Jet (ULJ) and Low-Level Jet (LLJ) are accelerated the heavy rainfall. Convective cloud developed when a strong southwesterly LLJ and strong moisture convergence occurring around the time of the heavy rainfall is consistent with the results of previous studies on such continuous production. Environmental conditions included high equivalent potential temperature of over 355 K at low levels, and low equivalent potential temperature of under 330 K at middle levels, causing vertical instability. The tip of the band shaped precipitation system was made up of line-shaped convective systems (LSCSs) that caused flooding and landslides, and the LSCSs were continuously enhanced by merging between new cells and the pre-existing cell. Difference of wind direction between low and middle levels has also been considered an important factor favouring the occurrence of precipitation systems similar to LSCSs. Development of LSCs from the wind direction difference at heights of the severe precipitation occurrence area was also identified. This study can contribute to the identification of production and development mechanisms of heavy rainfall and can be used in applied research for prediction of severe weather.
Heavy rainfall;KLAPS reanalysis data;convective system;severe weather;three-dimensional analysis;
 Cited by
모델 예측변수들을 이용한 집중호우 예측 가능성에 관한 연구,장민;지준범;민재식;이용희;정준석;유철환;

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