한국환경과학회지 (Journal of Environmental Science International)

  • 제25권3호
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  • Pages.345-359
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  • 2016
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  • 1225-4517(pISSN)
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  • 2287-3503(eISSN)
한국환경과학회 (The Korean Environmental Sciences Society)
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2D-Video Distrometer를 이용한 강수의 물리적 특성에 관한 사례연구

Case Study on the Physical Characteristics of Precipitation using 2D-Video Distrometer

  • 박종길 (인제대학교 환경공학과/대기환경정보연구센터) ;
  • 천은지 (인제대학교 대기환경정보공학과/대기환경정보연구센터) ;
  • 정우식 (인제대학교 대기환경정보공학과/대기환경정보연구센터)
  • Park, Jong-Kil (Dept. of Environmental Engineering/Atmospheric Environment Information Research Center, Inje University) ;
  • Cheon, Eun-Ji (Dept. of Atmospheric Environment Information Engineering/Atmospheric Environment Information Research Center, Inje University) ;
  • Jung, Woo-Sik (Dept. of Atmospheric Environment Information Engineering/Atmospheric Environment Information Research Center, Inje University)
  • 투고 : 2015.04.13
  • 심사 : 2016.02.15
  • 발행 : 2016.03.31
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초록

This study analyze the synoptic meteorological cause of rainfall, rainfall intensity, drop size distribution(DSD), fall velocity and oblateness measured by the 2D-Video distrometer(2DVD) by comparing two cases which are heavy rainfall event case and a case that is not classified as heavy rainfall but having more than $30mm\;h^{-1}$ rainrate in July, 2014 at Gimhae region. As a results; Over the high pressure edge area where strong upward motion exists, the convective rain type occurred and near the changma front, convective and frontal rainfall combined rain type occurred. Therefore, rainrate varies based on the synoptic meteorological condition. The most rain drop distribution appeared in the raindrops with diameters between 0.4 mm and 0.6 mm and large particles appeared for the convective rain type since strong upward motion provide favorable conditions for the drops to grow by colliding and merging so the drop size distribution varies based on the location or rainfall types. The rainfall phases is mainly rain and as the diameter of the raindrop increase the fall velocity increase and oblateness decrease. The equation proposed based on the 2DVD tends to underestimated both fall velocity and oblateness compared with observation. Since these varies based on the rainfall characteristics of the observation location, standard equation for fall velocity and oblateness fit for Gimhae area can be developed by continuous observation and data collection hereafter.

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참고문헌

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