| 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。 |
| 关键词: CLDAS;温风产品；评估；贵州 |
| DOI： |
| 投稿时间：2023-12-01修订日期：2024-10-25 |
| 基金项目: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) |
|
| Applicability Evaluation of CLDAS Temperature and Wind Analysis Products with Different Spatial Resolutions in Guizhou Province |
| ZHENG Bei,PENG Fang,YANG Fuyan,HU Xinxin,HE Mu,REN Manlin |
| (Guizhou Institute of Mountain Meteorological Science) |
| Abstract: |
| 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 . |
| Key words: CLDAS; temperature and wind speed products; assessment; Guizhou Province |
