Characteristics of Infrared and Water Vapor Imagery for the Heavy Rainfall Occurred in the Korean Peninsula

한반도에서 발생하였던 집중호우 시 적외 및 수증기 영상의 특성

  • Seong, Min-Gyu (Department of Atmospheric Sciences, Kong-Ju National University) ;
  • Suh, Myoung-Seok (Department of Atmospheric Sciences, Kong-Ju National University)
  • Received : 2014.04.28
  • Accepted : 2014.05.27
  • Published : 2014.08.31


In this study, we analyzed the spatio-temporal variations of satellite imagery for the two heavy rainfall cases (21 September, 2010, 9 August, 2011) occurred in the Korean Peninsula. In general, the possibility of strong convection can be increased when the region with plenty of moisture at the lower layer overlapped with the boundary between dark and bright area in the water vapor imagery. And the merging of convective cells caused by the difference in the moving velocities of two cells resulted in the intensification of convective activity and rainfall intensity. The rainfall intensity is more closely linked with the minimum cloud top temperature than the mean cloud top temperature. Also the spatio-temporal variations of rainfall intensity are impacted by the existence of merging processes. The merging can be predicted by the animation of satellite imagery but earlier detection of convective cells is almost impossible by using the infrared and water vapor imagery.


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