基于FY-3G降水测量雷达数据的某地区降水研究  

Research on Precipitation in a Certain Region Based on FY-3G Precipitation Measurement Radar(PMR)Data

作　　者：文锐 陈婷 Wen Rui;Chen Ting(Sichuan Provincial Meteorological Observatory,Chengdu 610072)

机构地区：[1]四川省气象台,四川成都610072

出　　处：《中阿科技论坛（中英文）》2024年第8期91-95,共5页China-Arab States Science and Technology Forum

基　　金：高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目“FY-3G产品在四川暴雨过程中的应用检验”(SCQXKJQN202305);中国科学院山地灾害与地表过程重点实验室开放基金“山区降雨的空间不均匀性对泥石流预报阈值的影响”。

摘　　要：文章运用FY-3G搭载的降水测量雷达(Precipitation Measurement Radar,PMR)数据对四川地区强降水过程进行研究,初步检验该产品的四川地区强降水过程中近地表降水率数据的准确性。基于四川省2023年区域性暴雨过程的小时雨量资料,对筛选出能够捕捉到较完整的降水信息且过境时间处在强降水时段内的PMR数据进行分析。研究结果显示,PMR在各时次轨道扫描范围内的近地表降水率均能提示相应的降水覆盖范围,且与对应的小时降水实况一致性较好。基于短时强降水实况,PMR近地表降水率中提示的降水信息分布与实况分布匹配度较高,各时次的近地表降水率与实况的匹配准确率均在90%以上,总体的匹配准确率达96.62%。This article aims to use PMR data carried by FY-3G to study the process of heavy precipitation in Sichuan Province,so as to verify the accuracy of the product's data.Based on the hourly precipitation data of the regional rainstorm in Sichuan Province in 2023,the PMR data that can capture complete precipitation information and whose transit time is within the period of heavy precipitation are screened and examined.The research findings show that the near-surface precipitation rate of PMR within the orbit scanning range can indicate corresponding precipitation coverage,and is consistent with the corresponding data.Based on the short-term heavy precipitation status,the distribution of precipitation prompted in the PMR matches well with the actual status.The accuracy of matching at each time is above 90%,and the overall accuracy reaches 96.62%.

关 键 词：四川地区 强降水过程 FY-3G 降水测量雷达 

分 类 号：P405[天文地球—大气科学及气象学]