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http://dx.doi.org/10.3741/JKWRA.2006.39.4.335

Development of a Flood Runoff and Inundation Analysis System Associated With 2-D Rainfall Data Generated Using Radar II. 2-D Quantitative Rainfall Estimation Using Cokriging  

Choi, Kyu-Hyun (River Information Center, Han River Flood Control Office, MOCT)
Han, Kun-Yeun (Dept. of Civil. Eng., Kyungpook National Univ.)
Kim, Gwang-Seob (Dept. of Civil. Eng., Kyungpook National Univ.)
Lee, Chang-Hee (Dept. of Civil. Eng., Kyungpook National Univ.)
Publication Information
Journal of Korea Water Resources Association / v.39, no.4, 2006 , pp. 335-346 More about this Journal
Abstract
Among various input data to hydrologic models, rainfall measurements arguably have the most critical influence on the performance of hydrologic model. Traditionally, hydrologic models have relied on point gauge measurements to provide the area-averaged rainfall information. However, rainfall estimates from gauges become inadequate due to their poor representation of areal rainfall, especially in situations with sparse gauge network. Alternatively, radar that covers much larger areas has become an attractive instrument for providing area- averaged precipitation information. Despite of the limitation of the QPE(Quantitative Precipitation Estimation) using radar, we can get the better information of spatial variability of rainfall fields. Also, rain-gauges give us the better quantitative information of rainfall field. Therefore, in this study, we developed improved methodologies tu estimate rainfall fields using an ordinary cokriging technique which optimally merges radar reflectivity data into rain-gauges data.
Keywords
radar; rain gauge; cokriging; QPE;
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Times Cited By KSCI : 2  (Citation Analysis)
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