Abstract Brief: Fine-Tuning ZDR in an X-Band Phased-Array Weather Radar
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| Title | Abstract Brief: Fine-Tuning ZDR in an X-Band Phased-Array Weather Radar |
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| Subtitle | Application of RC-ZDR to a squall line case observed by XPAR and SPOL |
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| License | CC Attribution 3.0 Germany: You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. |
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| Abstract | This work addresses the prominent issue that the observation accuracy of differential reflectivity (ZDR) from X-band phased-array weather radars (XPAR) fails to meet operational requirements, and proposes a systematic, high-precision calibration algorithm (RC-ZDR).
Currently, phased-array weather radars face issues such as isolation, including two polarized phased-array meteorological radars developed by the Advanced Radar Research Center (ARRC) at the University of Oklahoma—the Cylindrically Polarized Phased-Array Radar (CPPAR) and the Planar Polarized Phased-Array Radar (PPPAR, codenamed Horus). Some articles have compared the PPPAR to the WSR-88D, but no correction methods have been proposed. This study proposes RC-ZDR to address the isolation issues in phased-array radars. By simultaneously accounting for system bias, attenuation, clutter, and other factors, it improves the ZDR accuracy of XPAR to within 0.2 dB, thereby ensuring high spatio-temporal resolution while also enhancing accuracy. |
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