多源融合降水实况分析产品在贵州灾害隐患点的适用性评估  

Evaluation of the Applicability of Multi-source Fusion Precipitation Productsin Disaster Hidden Spots in Guizhou

作　　者：李从英 廖婷婷 张淑莹 钱成伟[1] 支亚京 LI Congying;LIAO Tingting;ZHANG Shuying;QIAN Chengwei;ZHI Yajing(Guizhou Meteorological Information Center,Guiyang 550002,China)

机构地区：[1]贵州省气象信息中心,贵州贵阳550002

出　　处：《山地气象学报》2025年第1期58-66,共9页Journal of Mountain Meteorology

基　　金：省市联合项目(黔气科合SS[2023]13号);国家气象信息中心“揭榜挂帅”项目。

摘　　要：【目的】当有强降水时,为给贵州灾害易发生的地区提供更准确的格点降水实况数据。【方法】利用贵州省285个灾害隐患点的逐小时降水观测资料,对月累计降水、小时降水以及2023年7月8日的区域性强降水天气过程进行分析。对二源融合降水逐小时产品(GZ_PRE_2S)、三源融合降水逐10 min产品(GZ_PRE_3S)、国家气象信息中心的多源融合实况分析1 km分辨率产品(ART_1 km)等3种产品的适用性进行评估。其中GZ_PRE_2S产品融合了质控后贵州非考核站点与雷达流传输逐仰角基数据,GZ_PRE_3S产品融合了质控后的贵州非考核站点、雷达流传输逐仰角基数据和FY4A卫星数据。【结果】3种融合产品基本都反映出了降水空间分布情况;ART_1 km和GZ_PRE_2S在强降水中心存在严重低估;GZ_PRE_3S对小时强降水有更好的监测能力,在强降水区域可以通过该产品提供实况服务;在强降水落区附近无降水区域的监测3种产品都需进一步改进。【结论】当有强降水时,三源降水可以为灾害隐患易发生地区提供更准确的格点降水实况数据。To provide more accurate grid precipitation data for disaster-prone areas in Guizhou during heavy rainfall events,combined with the regional heavy rainfall event on July 8,2023,a suitability assessment is conducted using monthly accumulated precipitation and hourly precipitation data from 285 disaster risk spots in Guizhou.This assessment focuses on three products:the Guizhou two-source hourly precipitation product(GZ_PRE_2S),the Guizhou three-source 10 min precipitation product(GZ_PRE_3S),and the multi-source analysis product with 1 km resolution from the National Meteorological Information Center(ART_1 km).The GZ_PRE_2S product integrates quality-controlled data from non-assessment stations in Guizhou and radar transmission data at different elevation angles,while the GZ_PRE_3S product combines quality-controlled data from non-assessment stations,radar transmission data and FY4A satellite data.The three fusion products all reflect the spatial distribution of precipitation basically.However,the ART_1 km and the Guizhou two-source fusion precipitation product significantly underestimate the precipitation at the center of heavy rainfall.The Guizhou three-source fusion precipitation product shows better monitoring capability for hourly heavy rainfall and can provide real-time services in heavy rainfall areas,although the monitoring of non-rainfall areas adjacent to heavy rainfall zones requires further improvement.The study results indicate that the Guizhou three-source precipitation product can provide more accurate grid precipitation data for disaster-prone areas during heavy rainfall events.

关 键 词：多源融合 降水 评估分析 贵州 

分 类 号：P426.616[天文地球—大气科学及气象学]