热带气象学报2026，Vol.42Issue(4)：578-588,11.DOI:10.16032/j.issn.1004-4965.2026.054
基于组网雨量计的中国气象局天气雷达拼图系统V3.0小时降水产品检验——以广西壮族自治区为例
Evaluation of the China Meteorological Administration Weather Radar Mosaic System V3.0 Hourly Precipitation Product Based on A Network of Rain Gauges:A Case Study of Guangxi Zhuang Autonomous Region
摘要
Abstract
Accurate precipitation monitoring and forecasting are essential for disaster mitigation,water resource management,and addressing global climate challenges.The China Meteorological Administration's upgraded Weather Radar Mosaic System V3.0(CWRMS V3.0)plays a pivotal role in operational precipitation monitoring,yet comprehensive validation of its quantitative precipitation estimation(QPE)products remains limited.Focusing on the Guangxi Zhuang Autonomous Region,this study evaluates the system's 1-hour QPE products from 1 January to 31 December,2023,using rain gauge observations from national meteorological stations.The results reveal three key findings:(1)The annual precipitation spatial distribution derived from QPE generally aligns with observations but exhibits distinct regional biases,including overestimation of approximately 500 mm in the coastal areas of the Beibu Gulf and an underestimation around Baise City.(2)The hourly QPE products demonstrate that the system has robust detection capabilities across various precipitation intensities,correlating well with the rain gauge records.However,while performance is satisfactory for light rains,the system exhibits a pronounced negative bias for heavy precipitation events.(3)Spatial disparities in accuracy are evident,with notably high errors(relative bias up to 60%)in northeastern Guilin and western Baise,contrasting with relatively lower errors observed in coastal regions.关键词
天气雷达拼图/降水估测/定量评估/广西壮族自治区Key words
weather radar mosaic/quantitative precipitation estimation(QPE)/quantitative validation/Guangxi Zhuang Autonomous Region分类
天文与地球科学引用本文复制引用
魏佳奇,陈生,李浩然,吴晶,汪冬冬,李艳萍,韦春霞..基于组网雨量计的中国气象局天气雷达拼图系统V3.0小时降水产品检验——以广西壮族自治区为例[J].热带气象学报,2026,42(4):578-588,11.基金项目
广西重点研发项目(AB22080104、AB22035016) （AB22080104、AB22035016）
甘肃省自然科学基金(24JRRA082) （24JRRA082）
柳州市元宝山地形暴雨重点实验室重点项目(2024ybssysz2) （2024ybssysz2）
中国科学院高层次人才计划(E2290702)共同资助 （E2290702）
