| 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。 |
| 关键词: 多源融合；降水；评估分析；贵州 |
| DOI： |
| 投稿时间：2024-05-24修订日期：2024-08-26 |
| 基金项目: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 |
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| Evaluation of the Applicability of Multi-source Fusion Precipitation Products in Disaster Hidden Spots in Guizhou |
| LI Congying,LIAO Tingting,ZHANG Shuying,QIAN Chengwei,ZHI Yajing |
| (Guizhou Meteorological Information Center) |
| Abstract: |
| 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 . |
| Key words: multi-source fusion; precipitation; analysis and evaluation; Guizhou Province |
