不同空间分辨率CLDAS温风实况分析产品在贵州地区的适用性评估  

Applicability Evaluation of CLDAS Temperature and Wind AnalysisProducts with Different Spatial Resolutions in Guizhou Province

作　　者：郑蓓 彭芳 杨富燕 胡欣欣 何牧 任曼琳 ZHENG Bei;PENG Fang;YANG Fuyan;HU Xinxin;HE Mu;REN Manlin(Guizhou Institute of Mountain Meteorological Science,Guiyang 550081,China;Guizhou Key Laboratory of Mountain Climate and Resources,Guiyang 550081,China)

机构地区：[1]贵州省山地气象科学研究所,贵州贵阳550081 [2]贵州省山地气候与资源重点实验室,贵州贵阳550081

出　　处：《山地气象学报》2025年第1期27-34,共8页Journal of Mountain Meteorology

基　　金：中国气象局创新发展专项(CXFZ2024P018,CXFZ2023J086);中国气象局复盘总结专项(FPZJ2023-117);贵州省科技厅基础研究项目(黔科合基础-ZK[2022]一般272)。

摘　　要：【目的】为了评估不同分辨率CLDAS温风产品在贵州地区的适用性。【方法】CLDAS温度产品采用地形线性插值法,风速产品采用双线性插值法,用ME、MAE和R作为指标对CLDAS温度产品进行评估,用MAE和R作为指标对CLDAS风速进行评估。【结果】CLDAS温风产品空间分辨率越高,与观测值偏离程度越小,正相关性越强。CLDAS温度产品在贵州的表现比风速产品好。贵州大部分地区温度产品的平均误差在-1~1℃,高分辨率温度产品的平均误差在-1~1℃的站数比例高于低分辨率温度产品;贵州绝大部分地区温风产品的平均绝对误差在0~1℃和0~1 m·s^(-1),高分辨率温风产品的平均绝对误差的空间平均值低于低分辨率温风产品。夏季CLDAS温度产品平均误差在-1~1℃的站数比例低于冬季温度产品,夏季CLDAS温风产品平均绝对误差的空间平均值高于冬季温风产品;冬季CLDAS温风产品误差相比于夏季偏小,误差范围偏小,冬季CLDAS温风实况产品在贵州地区表现较好。【结论】CLDAS实况产品在贵州地区分辨率越高表现越好;冬季比夏季表现更好。In order to evaluate the applicability of CLDAS temperature and wind products with different resolutions in Guizhou Province,the topographic linear interpolation method is used to evaluate the CLDAS temperature products,and bilinear interpolation method is used for wind speed products.Then,the mean error(ME),mean absolute error(MAE)and R are taken as indicators to evaluate CLDAS temperature products,and MAE and R as indicators for evaluating CLDAS wind speed products.The results show that the higher the spatial resolution of CLDAS temperature and wind products,the smaller the deviation from the observation of temperature and wind,and the stronger the positive correlation between the CLDAS products and the observations.The performance of CLDAS temperature products in Guizhou is better than that of the wind speed products.In most areas of Guizhou,the ME of temperature products is in the range of-1℃to 1℃,and the proportion of stations with ME being-1℃to 1℃of high-resolution temperature products is higher than that of low-resolution temperature products.The MAE of temperature products is 0~1℃and the MAE of wind products is 0~1 m·s^(-1).The spatial average MAE of high-resolution temperature and wind products is lower than that of low-resolution temperature and wind products.The proportion of stations with ME of summer CLDAS temperature products in the range of-1℃to 1℃is lower than that of the winter temperature products.The spatial mean values of MAEs of summer CLDAS temperature and wind products are higher than those of the winter temperature and wind products.The errors of winter CLDAS temperature and wind products are lower relative to the summer CLDAS temperature and wind products,and the error ranges are smaller.The winter CLDAS temperature and wind products are better in Guizhou.To sum up,the higher the resolution,the better the performance of CLDAS products in Guizhou,and the winter CLDAS temperature and wind products are much better than the summer products.

关 键 词：CLDAS 温风产品 评估 贵州 

分 类 号：P413.2[天文地球—大气科学及气象学]