GPM卫星降水数据在广东的适用性分析  

Analysis of the Applicability of Global Precipitation Measurement Mission Data in Guangdong

作　　者：朱怡颖 陈德康 张桥容 ZHU Yi-ying;CHEN De-kang;ZHANG Qiao-rong(Guangdong Climate Center,Guangzhou 510640;Guangdong Meteorological Data Center,Guangzhou 510640;Wuhua Meteorological Service,Wuhua 514400)

机构地区：[1]广东省气候中心,广东广州510640 [2]广东省气象数据中心,广东广州510640 [3]五华县气象局,广东五华514400

出　　处：《广东气象》2023年第4期36-40,共5页Guangdong Meteorology

基　　金：海南省南海气象防灾减灾重点实验室开放基金项目(SCSF202210);广东省自然科学基金(2022A1515010320);广东省气象局面上项目(GRMC2021M16)。

摘　　要：为评估全球降水观测(GPM)卫星降水数据在广东地区的适用性,利用广东省86个国家地面站点实测降水数据,选用5个评价指标从降水误差、季节平均降水量等方面进行精度验证。结果表明:(1)GPM卫星降水数据与站点实测数据相关性随时间尺度增加呈递增趋势,探测能力在月尺度上表现较好。(2)GPM卫星降水数据在季节尺度上对平均降水量有一定的表征能力,但季节间有明显差异,在夏季表现较差。(3) GPM降水数据受气候、地理位置和地形等因素影响较大,降水精度易受影响。To assess the applicability of the satellite data by the Global Precipitation Measurement Mis-sion(GPM)in Guangdong,this paper used the precipitation data observed by 86 national surface stations in the province to set up five assessment indexes to verify the accuracy of the GPM with regards to precipitation error and seasonally averaged precipitation amount.The results are shown as follows.1)The GPM data tends to correlate more with the observed data as the time scale increases,having the best measuring capabil-ities on the monthly scale.2)The GPM data depicts the average rainfall amount well on the seasonal scale,though with significant differences between seasons and the worst performance for summer.3)Much affected by the climate,geographic location and terrain,the GPM data has much to improve in the accuracy of pre-cipitation.

关 键 词：气象卫星 全球降水观测(GPM) 降水量 广东 

分 类 号：P332[天文地球—水文科学]