CLDAS V2.0逐时气温实况产品在宝鸡市的检验评估  

Inspection and Evaluation of CLDASV2.0 Hourly Temperature Products in Baoji

作　　者：任欢[1] 李玉婷 卢晔[1] Ren Huan;Li Yuting;Lu Ye(Baoji Meteorological Office,Baoji 721000,Shaanxi,China;Ankang Meteorological Office,Ankang 725000,Shaanxi,China)

机构地区：[1]宝鸡市气象局,陕西宝鸡721000 [2]安康市气象局,陕西安康725000

出　　处：《绿色科技》2024年第4期18-22,50,共6页Journal of Green Science and Technology

基　　金：宝鸡市气象局创新基金项目(编号:202003)。

摘　　要：基于宝鸡市所有国家级自动站和区域站观测数据,通过准确率、平均误差、平均绝对误差、均方根误差,对2019-2022年中国气象局第二代陆面数据同化系统(CLDAS V2.0)在宝鸡市的逐时气温网格数据(网格实况)进行检验评估。结果表明:网格实况在国家级自动站的准确率指标高于区域站,平均误差、平均绝对误差、均方根误差指标低于区域站;在国家级自动站中,网格实况对渭滨站、陈仓站、千阳站、麟游站、凤翔站的质量较高;网格实况在9、10月份质量最高,1、2月份质量最低;网格实况在宝鸡市大部分范围平均误差均在-2~2℃,其在第四季度质量最高。Based on all the observation data from national automatic stations and regional automatic stations in Baoji,the accuracy,mean error,mean absolute error,and root mean square error were used to evaluate the hourly temperature grid data(grid observations)of the China Meteorological Administration Land Data Assimilation System V2.0(CLDAS V2.0)in Baoji from 2019 to 2022.The results show that the accuracy of the national automatic stations in grid observations is better than regional automatic stations.While the mean error,mean absolute error,and root mean square error of the national automatic stations in grid observations are lower than those of the regional automatic stations.In national automatic stations,the grid observation has higher quality for Weibin,Chencang,Qianyang,Linyou,and Fengxiang stations.The grid observations have the highest quality in September and October,and the lowest quality in March and April.The mean error of the grid observations in most areas of Baoji is between-2~2℃,with the highest quality in the fourth quarter.

关 键 词：CLDAS V2.0 逐时气温 检验评估 

分 类 号：P423[天文地球—大气科学及气象学]