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Rapid-Scan and Polarimetric Phased-Array Radar Observations of a Tornado in the Pearl River Estuary

Journal of Tropical Meteorology 2021年第1期27卷 81-86页

作者： ZHANG Yu BAI Lan-qiang MENG Zhi-yong CHEN Bing-hong TIAN Cong-cong FU Pei-ling Guangzhou Meteorological Observatory China Meteorological AdministrationGuangzhou 511430 China School of Atmospheric Sciences/Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-sen UniversityZhuhaiGuangdong 519082 China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiGuangdong 519082 China Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871 China

The strong destructive winds during tornadoes can greatly threaten human life and destroy *** increasing availability of visual and remote observations,especially by Doppler weather radars,is of great value in understanding tornado formation and issuing warnings to the *** this study,we present the first documented tornado over water detected by a state-of-the-art dual-polarization phased-array radar(dual-PAR)in *** contrast to new-generation weather radars,the dual-PAR shows great advantages in tornado detection for its high spatial resolution,reliable polarimetric variables,and rapid-scan *** polarimetric signature of copolar cross-correlation coefficient with anomalously low magnitude appears to be effective for verifying a tornado and thus is helpful for issuing tornado *** Guangdong Meteorological Service has been developing an experimental X-band dual-PAR network in the Pearl River Delta with the goal of deploying at least 40 advanced dual-PARs and other dual-polarization weather radars before *** network is the first quasi-operational X-band dual-PAR network with unprecedented high coverage in the *** such high-performance close-range PARs,efficient operational nowcasting and warning services for small-scale,rapidly evolving,and damaging weather(e.g.,tornadoes,localized heavy rainfall,microbursts,and hail)can be expected.

关键词： tornado waterspout phased-array radar dual-polarization China

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