Evaluating the Evolution of ECMWF Precipitation Products Using Observational Data for Iran: From ERA40 to ERA5
文献类型：期刊论文
| 作者 | Ghajarnia, Navid8; Akbari, Mahdi7; Saemian, Peyman1; Ehsani, Mohammad Reza6; Hosseini-Moghari, Seyed-Mohammad4,5; Azizian, Asghar3; Kalantari, Zahra2,8; Behrangi, Ali6; Tourian, Mohammad J.1; Klove, Bjorn7 |
| 刊名 | EARTH AND SPACE SCIENCE
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 9期号:10页码:24 |
| DOI | 10.1029/2022EA002352 |
| 通讯作者 | Akbari, Mahdi(mahdi.akbari@oulu.fi) |
| 英文摘要 | European Center for Medium-Range Weather Forecasts Reanalysis (ERA), one of the most widely used precipitation products, has evolved from ERA-40 to ERA-20CM, ERA-20C, ERA-Interim, and ERA5. Studies evaluating the performance of individual ERA products cannot adequately assess the evolution of the products. We compared the performance of all ERA precipitation products at daily, monthly, and annual data (1980-2018) using more than 2100 Iran precipitation gauges. Results indicated that ERA-40 performed worst, followed by ERA-20CM, which showed only minor improvements over ERA-40. ERA-20C considerably outperformed its predecessors, benefiting from the assimilation of observational data. Although several previous studies have reported full superiority of ERA5 over ERA-Interim, our results revealed several shortcomings in ERA5 compared with the ERA-Interim estimates. Both ERA-Interim and ERA5 performed best overall, with ERA-Interim showing better statistical and categorical skill scores, and ERA5 performing better in estimating extreme precipitations. These results suggest that the accuracy of ERA precipitation products has improved from ERA-40 to ERA-Interim, but not consistently from ERA-Interim to ERA5. This study employed a grid-grid comparison approach by first creating a gridded reference data set through the spatial aggregation of point source observations, however, the results from a point-grid approach showed no change in the overall ranking of products (despite the slight changes in the error index values). These findings are useful for model development at a global scale and for hydrological applications in Iran. |
| WOS关键词 | SPATIOTEMPORAL EVALUATION ; HOMOGENEITY TEST ; RADAR ; TEMPERATURE ; PERFORMANCE ; REANALYSIS ; EVENTS ; ERROR ; BASIN |
| 资助项目 | Maa- ja vesitekniikan tuki ry[41878] ; University of Oulu |
| WOS研究方向 | Astronomy & Astrophysics ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000864684100001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Maa- ja vesitekniikan tuki ry ; University of Oulu |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/185488]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Akbari, Mahdi |
| 作者单位 | 1.Univ Stuttgart, Inst Geodesy GIS, Stuttgart, Germany 2.KTH Royal Inst Technol, Dept Sustainable Dev Environm Sci & Engn, Stockholm, Sweden 3.Imam Khomeini Int Univ, Water Engn Dept, Qazvin, Iran 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 5.Goethe Univ Frankfurt, Inst Phys Geog, Frankfurt, Germany 6.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA 7.Univ Oulu, Fac Technol, Water Energy & Environm Engn Res Unit, Oulu, Finland 8.Stockholm Univ, Dept Phys Geog, Bolin Ctr Climate Res, Stockholm, Sweden |
| 推荐引用方式 GB/T 7714 | Ghajarnia, Navid,Akbari, Mahdi,Saemian, Peyman,et al. Evaluating the Evolution of ECMWF Precipitation Products Using Observational Data for Iran: From ERA40 to ERA5[J]. EARTH AND SPACE SCIENCE,2022,9(10):24. |
| APA | Ghajarnia, Navid.,Akbari, Mahdi.,Saemian, Peyman.,Ehsani, Mohammad Reza.,Hosseini-Moghari, Seyed-Mohammad.,...&Haghighi, Ali Torabi.(2022).Evaluating the Evolution of ECMWF Precipitation Products Using Observational Data for Iran: From ERA40 to ERA5.EARTH AND SPACE SCIENCE,9(10),24. |
| MLA | Ghajarnia, Navid,et al."Evaluating the Evolution of ECMWF Precipitation Products Using Observational Data for Iran: From ERA40 to ERA5".EARTH AND SPACE SCIENCE 9.10(2022):24. |
入库方式： OAI收割
来源：地理科学与资源研究所
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