Journal of Arid Meteorology ›› 2023, Vol. 41 ›› Issue (5): 811-819.DOI: 10.11755/j.issn.1006-7639(2023)-05-0811
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DONG Zhulei(), ZHAO Yanli(
), FENG Xiaojing, LIU Shimeng
Received:
2023-02-01
Revised:
2023-08-31
Online:
2023-10-31
Published:
2023-11-03
通讯作者:
赵艳丽(1969—),女,内蒙古满洲里人,正高级工程师,主要从事气象灾害监测、预报预警和评估及气候变化、气候应用服务等研究。E-mail: 作者简介:
董祝雷(1989—),男,江苏灌云人,工程师,主要从事气候变化和气候应用服务研究。E-mail: dongzhl89@163.com。
基金资助:
CLC Number:
DONG Zhulei, ZHAO Yanli, FENG Xiaojing, LIU Shimeng. Applicability assessment of CLDAS temperature and precipitation products in Inner Mongolia[J]. Journal of Arid Meteorology, 2023, 41(5): 811-819.
董祝雷, 赵艳丽, 冯晓晶, 刘诗梦. CLDAS气温和降水产品在内蒙古地区适用性分析[J]. 干旱气象, 2023, 41(5): 811-819.
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URL: http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2023)-05-0811
Fig.2 The spatial distribution of average annual precipitation from the observation (a) and three datasets (b, c, d), and difference between them and observation values (e, f, g) in Inner Mongolia during 2008-2019 (Unit: mm) (a) CN05.1, (b, e) CLDAS, (c, f) CRU TS, (d, g) ERA5
Fig.3 The spatial distribution of annual mean temperature from the observation (a) and three datasets (b, c, d), and difference between them and observation values (e, f, g) in Inner Mongolia during 2008-2019 (Unit: ℃) (a) CN05.1, (b, e) CLDAS, (c, f) CRU TS, (d, g) ERA5
Fig.4 The linear trend of annual precipitation from CN05.1 (a), CLDAS (b), CRU TS (c) and ERA5 (d) datasets in Inner Mongolia during 2008-2019 (Unit: mm·a-1)
Fig.5 The linear trend of annual mean temperature from CN05.1 (a), CLDAS (b), CRU TS (c) and ERA5 (d) datasets in Inner Mongolia during 2008-2019 (Unit :℃·a-1)
产品 | 平均气温 | 降水量 | ||||
---|---|---|---|---|---|---|
相关 系数 | RMSE/℃ | MAE/℃ | 相关 系数 | RMSE/mm | MAE/mm | |
CLDAS | 0.999 5 | 0.48 | 0.38 | 0.965 7 | 8.68 | 4.73 |
CRU TS | 0.998 3 | 1.32 | 1.13 | 0.866 8 | 18.39 | 10.33 |
ERA5 | 0.998 4 | 1.09 | 0.85 | 0.874 7 | 18.00 | 9.58 |
Tab.1 The statistics of correlation coefficient and error of monthly mean temperature and precipitation between three datasets and observation values at 119 stations in Inner Mongolia
产品 | 平均气温 | 降水量 | ||||
---|---|---|---|---|---|---|
相关 系数 | RMSE/℃ | MAE/℃ | 相关 系数 | RMSE/mm | MAE/mm | |
CLDAS | 0.999 5 | 0.48 | 0.38 | 0.965 7 | 8.68 | 4.73 |
CRU TS | 0.998 3 | 1.32 | 1.13 | 0.866 8 | 18.39 | 10.33 |
ERA5 | 0.998 4 | 1.09 | 0.85 | 0.874 7 | 18.00 | 9.58 |
产品 | 春季 | 夏季 | 秋季 | 冬季 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | |||||||||
偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | |
CLDAS | 0.13 | 0.31 | -0.62 | 8.77 | -0.12 | 0.30 | 0.83 | 18.64 | 0.02 | 0.33 | -3.21 | 9.94 | 0.23 | 0.45 | 0.59 | 1.40 |
CRU TS | -0.52 | 1.07 | -0.46 | 13.90 | -0.59 | 1.01 | 6.99 | 49.32 | -0.08 | 0.87 | -4.00 | 18.97 | 0.19 | 1.19 | -2.40 | 3.43 |
ERA5 | -0.34 | 0.66 | 2.38 | 12.10 | -0.19 | 0.51 | -40.55 | 51.80 | 0.09 | 0.59 | -1.71 | 14.96 | 0.93 | 1.26 | 2.47 | 3.32 |
Tab.2 The statistics of bias and mean absolute error of seasonal mean temperature and precipitation between three datasets and observation values at 119 stations in Inner Mongolia
产品 | 春季 | 夏季 | 秋季 | 冬季 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | 平均气温/℃ | 降水量/mm | |||||||||
偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | 偏差 | MAE | |
CLDAS | 0.13 | 0.31 | -0.62 | 8.77 | -0.12 | 0.30 | 0.83 | 18.64 | 0.02 | 0.33 | -3.21 | 9.94 | 0.23 | 0.45 | 0.59 | 1.40 |
CRU TS | -0.52 | 1.07 | -0.46 | 13.90 | -0.59 | 1.01 | 6.99 | 49.32 | -0.08 | 0.87 | -4.00 | 18.97 | 0.19 | 1.19 | -2.40 | 3.43 |
ERA5 | -0.34 | 0.66 | 2.38 | 12.10 | -0.19 | 0.51 | -40.55 | 51.80 | 0.09 | 0.59 | -1.71 | 14.96 | 0.93 | 1.26 | 2.47 | 3.32 |
Fig.6 The distribution of mean absolute error between seasonal mean temperature (a), precipitation (b) at 119 stations in Inner Mongolia and CLDAS, CRU TS, ERA5 products
Fig.7 The spatial distribution of correlation coefficient (a, c) and root mean square error (b, d) between CLDAS temperature (a, b), precipitation (c, d) products and observation values at 119 stations in Inner Mongolia
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