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http://dx.doi.org/10.3741/JKWRA.2009.42.8.607

Correction of Radar Reflectivity over Beam Blocking Area by Accumulated Radar Reflectivity  

Park, Sung-Hwan (Dept. of Astronomy and Atmospheric Sciences, Kyungpook National Univ.)
Jung, Sung-Hwa (Dept. of Astronomy and Atmospheric Sciences, Kyungpook National Univ.)
Lee, Jung-Hoon (WIIS Development team, Kweather Co., Ltd.)
Kim, Kyeong-Eak (Dept. of Astronomy and Atmospheric Sciences, Kyungpook National Univ.)
Publication Information
Journal of Korea Water Resources Association / v.42, no.8, 2009 , pp. 607-617 More about this Journal
Abstract
Radar beam blocking which is partially or entirely interrupted by obstacles like a mountain causes underestimation of the rainfall. In this paper, partially blocked radar reflectivity is retrieved using the ARM(Accumulated Reflectivity Map). ARM is made by accumulation of the radar reflectivity and very useful product to analyze the beam blockage. The blockage correcting map could be obtained by assuming the spatially uniform reflectivity field in the ARM. This method is applied to the cases of typhoon and Changma, and we obtain the MFE(Mean Fractional Error) from two radar data, the one is objective radar data which is affected by blockage and the other is comparative radar data which is not affected by blockage. Before blocking correction, MFE is 20-35%. However, after correction, MFE decreases to 7-10%.
Keywords
beam blocking; accumulated reflectivity; blocking correction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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