摘要
利用反射率因子Z建立的QPE_TP算法相比传统降水估测方法效果有明显提升,为充分发挥偏振雷达在定量降水估测(QPE)中的优势,在QPE_TP的基础上,本文进一步提出基于S和X波段雷达双偏振参量组网的瓦片分区定量降水估测方法,通过5次天气过程对各偏振参量降水估测方法及传统方法进行评估。结果表明,QPE_TP_Z_KDP综合估测方法相较其他方法表现出明显优势,尤其在强降水区域的估测结果与实际雨量分布高度一致,各项误差指标均最小。因此,QPE_TP_Z_KDP综合估测方法是提升雷达QPE比较有效的方法。
The QPE_TP algorithm of the reflectivity factor shows significant improvements over traditional precipitation estimation methods.To fully leverage the advantages of polarization radar in quantitative precipitation estimation(QPE),a tiled regional quantitative precipitation estimation method using a dual-polarization parameter network with S and X-band radars has been applied in this paper.By assessing various precipitation estimation methods based on polarization parameters and traditional methods through five weather events,the results show that the QPE_TP_Z_KDP comprehensive estimation method exhibits clear advantages over others,especially in strong precipitation areas,where its QPE closely match the actual rainfall distribution,resulting in the smallest error metrics.Therefore,the QPE_TP_Z_KDP method is an effective approach for enhancing radar QPE compared with other methods.
作者
李佳慧
马建立
陈明轩
史朝
LI Jiahui;MA Jianli;CHEN Mingxuan;SHI Zhao(Chengdu University of Information Technology,Chengdu 610225,Sichuan,China;Institute of Urban Meteorology,Beijing 100089,China)
出处
《高原气象》
北大核心
2025年第4期1046-1056,共11页
Plateau Meteorology
基金
国家重点研发计划专项(2022YFC3003901)。
关键词
偏振参量
瓦片分区
降水估测
polarization parameter
tile partitioning
precipitation estimation
