广东水利水电Issue(12)：21-28,8.
基于CMPAS的"韦帕"台风过程降水真实性评估
Assessment of the Authenticity of Precipitation During the"Wipha"Typhoon Process Based on CMPAS
摘要
Abstract
Based on the CMPAS issued by the National Meteorological Information Center,this paper evaluates the retrieval ability of the merge product during the"Weipa"typhoon process,using the precipitation of the quality control stations as true value.The evaluation process uses a variety of error indicators and scoring indicators.The results show that:① The grid products generally reflect the actual rainfall distribution,but fail to accurately reflect the area where the precipitation extreme value is located,and the rainfall maximum area and the error maximum area basically coincide.②Almost all the scoring indicators showed a downward trend with the increase of rainfall magnitude,and the TS score and hit rate decreased most significantly.The rate of empty report was very high in all rainfall magnitude,and the comprehensive score of non-independent test was significantly higher than that of independent test.③The evaluation of the single station with the largest error shows that the grid value is generally smaller than the station value,and the deviation is the most obvious at the extreme value;The grid value normally reflects the time when the extreme precipitation occurs,which is consistent with the trend of the whole process.④According to the comprehensive evaluation results,the real-time merge product has a good ability to depict the spatial distribution,time distribution and large value range of precipitation,but it is not accurate to depict the size and area of extreme value,and shows the trend of error increasing with precipitation.Therefore,this product can be used to forecast the precipitation area of small magnitude and the occurrence time of precipitation extremes at stations,but it should be used with caution for the prediction of heavy precipitation processes.关键词
融合降水产品/CMPAS/韦帕/质量评估Key words
merged precipitation products/CMPAS/Wipha/quality assessment分类
天文与地球科学引用本文复制引用
陈逸智,郑艳萍,张春燕,王沛东,侯灵,邓若钊..基于CMPAS的"韦帕"台风过程降水真实性评估[J].广东水利水电,2023,(12):21-28,8.基金项目
广东省气象局科技创新项目(编号:GRMCTD202103) （编号:GRMCTD202103）
广东省气象局科学技术研究项目(编号:GRMC2022Q05). （编号:GRMC2022Q05）
