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논문 기본 정보

자료유형
학술저널
저자정보
Oh, Jai-Ho (Dept. of Env. Atmo. Sci., Pukyong National Univ.) Kim, Ok-Yeon (Dept. of Env. Atmo. Sci., Pukyong National Univ.) Yi, Han-Se (Dept. of Env. Atmo. Sci., Pukyong National Univ.) Kim, Tae-Kuk (Dept. of Env. Atmo. Sci., Pukyong National Univ.)
저널정보
한국제4기학회 제4기학회지 제4기학회지 제19권 제2호
발행연도
2005.1
수록면
74 - 79 (6page)

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Recently, several attempts have been made to provide reasonable information on unusual severe weather phenomena such as tolerant heavy rains and very wild typhoons. Quantitative precipitation forecasts and probabilistic quantitative precipitation forecasts (QPFs and PQPFs, respectively) might be one of the most promising methodologies for early warning on the flesh floods because those diagnostic precipitation models require less computational resources than fine-mesh full-dynamics non-hydrostatic mesoscale model. The diagnostic rainfall model used in this study is the named QPM(Quantitative Precipitation Model), which calculates the rainfall by considering the effect of small-scale topography which is not treated in the mesoscale model. We examine the capability of probabilistic diagnostic rainfall model in terms of how well represented the observed several rainfall events and what is the most optimistic resolution of the mesoscale model in which diagnostic rainfall model is nested. Also, we examine the integration time to provide reasonable fine-mesh rainfall information. When we apply this QPM directly to 27 km mesh meso-scale model (called as M27-Q3), it takes about 15 min. while it takes about 87 min. to get the same resolution precipitation information with full dynamic downscaling method (called M27-9-3). The quality of precipitation forecast by M27-Q3 is quite comparable with the results of M27-9-3 with reasonable threshold value for precipitation. Based on a series of examination we may conclude that the proosed QPM has a capability to provide fine-mesh rainfall information in terms of time and accuracy compared to full dynamical fine-mesh meso-scale model.

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