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http://dx.doi.org/10.3741/JKWRA.2020.53.12.1211

Bright band detection using X-band polarimetric radar  

Lee, Dong-ryul (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Jang, Bong-joo (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Hwang, Seok Hwan (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Noh, Hui-seong (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korea Water Resources Association / v.53, no.12, 2020 , pp. 1211-1220 More about this Journal
Abstract
This research detects the features of the bright band (BB) through analysis of the vertical profile of range height indicator (RHI) and the slant range beam profile of plane position indicator (PPI) of the polarimetric radar measurements-horizontal reflectivity (ZH), differential reflectivity (ZDR), and cross-correlation coefficient (ρHV). As a result of the analysis, it is possible to clearly detect the bright band using the polarimetric radar measurements, and it is confirmed that the result is consistent by double searching for the BB using the RHI and PPI scan data at the same time. Based on these results, the accuracy of QPE (quantification of precipitation estimation) can be improved by applying the BB search method by the PPI slant range in this research to large rainfall radars that only scan PPI volumes in the field without RHI observations.
Keywords
X-band polarimetric radar; Radar rainfall; Bright band; Range height indicator (RHI); Plane position indicator (PPI);
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