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投稿时间：2020-09-17 修订日期：2021-11-02
投稿时间：2020-09-17 修订日期：2021-11-02
中文摘要: 为了比较S波段双偏振雷达资料和X波段相控阵天气雷达资料识别中气旋的差异，结合X波段相控阵天气雷达（XPAR）和S波段双偏振天气雷达（SPOL）及地面观测资料，对比分析了2019年4月19日发生在广州的一次中小尺度天气过程，结果显示：使用的识别算法可以正确识别出中气旋；XPAR的高时空分辨率数据可以弥补SPOL仰角层不足的缺陷，观测到更加完整的中气旋垂直结构，识别结果中的参数也比SPOL更加细致，更精准地揭示了中气旋的短时演变。研究结果表明XPAR对于强天气回波的观测识别性能相比SPOL具有持续时间更长、垂直结构更加精细、正负速度对差值更大、随整个天气过程演变更加细致等优势，有利于对中小尺度天气系统的快速发展、演变开展细致深入的研究。
中文关键词: 相控阵天气雷达，双偏振天气雷达，中气旋，识别
Abstract:In order to compare the difference of mesocyclone identifications between S-band dual polarization radar (SPOL) data and X-band phased array weather radar (XPAR) data, based on the SPOL and XPAR and ground observation data, a small and medium scale weather process that occurred in Guangzhou on 19 April 2019 is compared and analyzed. The results show that the identification algorithm used can correctly identify the mesocyclone. The high spatial-temporal resolution data of XPAR can make up for the lack of SPOL elevation layer, and more complete vertical structures of mesocyclones were observed. The parameters in the identification results were more detailed than those in SPOL, which revealed the short-term evolution of mesocyclone more accurately. In conclusion, compared with SPOL, XPAR has the advantages of longer duration, more fine vertical structure, larger difference between positive and negative velocity extremum, and more detailed evolution with the whole weather process. This is conducive to the detailed and in-depth study on the rapid development and evolution of mesoscale weather system.
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基金项目:国家自然科学基金联合基金项目（U2142210）和国家自然科学基金项目（42075001）共同资助
引用文本：
苏永彦,刘黎平,2022.S波段双偏振雷达和X波段相控阵天气雷达中气旋识别结果对比[J].气象,48(2):229-244.
SU Yongyan,LIU Liping,2022.Comparison of Mesocyclone Identification Results Between S-Band Dual Polarization Radar and X-Band Phased Array Weather Radar[J].Meteor Mon,48(2):229-244.
苏永彦,刘黎平,2022.S波段双偏振雷达和X波段相控阵天气雷达中气旋识别结果对比[J].气象,48(2):229-244.
SU Yongyan,LIU Liping,2022.Comparison of Mesocyclone Identification Results Between S-Band Dual Polarization Radar and X-Band Phased Array Weather Radar[J].Meteor Mon,48(2):229-244.
