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http://dx.doi.org/10.5467/JKESS.2019.40.1.9

Removal of Super-Refraction Echoes using X-band Dual-Polarization Radar Parameters  

Seo, Eun-Kyoung (Department of Earth Science Education, Kongju National University)
Kim, Dong Young (Divison of College Scholastic Ability Test, Korea Institute for Curriculum and Evaluation)
Publication Information
Journal of the Korean earth science society / v.40, no.1, 2019 , pp. 9-23 More about this Journal
Abstract
Super-refraction of radar beams tends to occur primarily under a particular vertical structure of temperature and water vapor pressure profiles. A quality control process for the removal of anomalous propagation (AP) ehcoes are required because APs are easily misidentified as precipitation echoes. For this purpose, we collected X-band polarimetric radar parameters (differential reflectivity, cross-correlation coefficient, and differential phase) only including non-precipitation echoes (super-refraction and clear-sky ground echoes) and precipitation echoes, and compared the echo types regarding the relationships among radar reflectivities, polarimetric parameters, and the membership functions. We developed a removal algorithm for the non-precipitation echoes using the texture approach for the polarimetric parameters. The presented algorithm is qualitatively validated using the S-band Jindo radar in Jeollanam-do. Our algorithm shows the successful identification and removal of AP echoes.
Keywords
super-refraction echo; anomalous propagation; dual-polarimetric parameters; X-band radar; algorithm;
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Times Cited By KSCI : 1  (Citation Analysis)
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