Do Model Results Vary under Different Routing Algorithms Based on a Distributed Ecohydrological Model?
文献类型：期刊论文
| 作者 | Xu, Zhenwu2,3,4; Sun, Lin1; Tang, Guoping4; Chen, Xiaohua4; Niu, Xiangyu4; Li, Yi4; Yu, Yangbo4 |
| 刊名 | JOURNAL OF HYDROMETEOROLOGY
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 23期号:12页码:1913-1928 |
| ISSN号 | 1525-755X |
| 关键词 | Watersheds Streamflow Hydrology Ecological models Hydrologic models |
| DOI | 10.1175/JHM-D-21-0251.1 |
| 通讯作者 | Tang, Guoping(tanggp3@mail.sysu.edu.cn) |
| 英文摘要 | Although several flow routing (FR) algorithms are developed for hydrological modeling, it is still uncertain how the selection of algorithms may affect model results. This study aims to explore the similarity and dissimilarity in model results among different FR algorithms characterized by single flow direction (SD) and multiple flow direction (MD). The Coupled Hydro-Ecological Simulation System (CHESS) was incorporated with six different FR algorithms (D8, D infinity, MD infinity, MD8, MFD-md, and RMD infinity) and then applied for modeling ecohydrological processes for a semiarid mountainous watershed in the western United States during 1991-2012. Comparisons were made between the model results at the catchment and the grid scale. After slightly adjusting one of the most sensitive soil parameters, all algorithms behave similarly in simulating stream hydrographs. When averaged for the watershed, the modeled ecohydrological variables mostly do not differ significantly (<5%) among the six FR algorithms. Nevertheless, the simulated ecohydrological variables are spatially more autocorrelated under the more dispersive MD algorithms. In addition, there exist significant (>5%) cell-level differences in modeled soil moisture among different FR algorithms, with propagated influences on the simulated evapotranspiration and vegetation growth variables. In hillslopes, the cell-level differences in model results tend to increase significantly as the flows move to the streams. Overall, this study proves that the watershed-level differences in model results among FR algorithms are low after model calibration, while significant differences still occur at the cell level. Thus, observational data are essential for testing which routing algorithm captures better the reality of local ecohydrological processes. Significance StatementThe consideration of flow routing is essential for accurately simulating land surface ecohydrological processes. However, less is known about how the selection of flow routing algorithms may affect the model results. Based on model experiments, we found that the model results under different algorithms do not significantly differ from each other when averaged for the watershed. However, significant differences in model results exist at the individual cell level. These findings are useful for guiding future modeling-related research and also suggest the importance of field studies for testing which routing algorithm can better represent local ecohydrological processes. |
| WOS关键词 | TOPOGRAPHIC WETNESS INDEX ; FLOW ; WATER ; EXTRACTION ; HYDROLOGY ; NETWORKS ; DYNAMICS ; AREAS |
| 资助项目 | National Natural Science Foundation of China ; [42171025] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000905795600004 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189743]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tang, Guoping |
| 作者单位 | 1.China Inst Water Resources & Hydropower Res, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 4.Sun Yat Sen Univ, Sch Geog & Planning, Dept Phys Geog Resources & Environm, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Zhenwu,Sun, Lin,Tang, Guoping,et al. Do Model Results Vary under Different Routing Algorithms Based on a Distributed Ecohydrological Model?[J]. JOURNAL OF HYDROMETEOROLOGY,2022,23(12):1913-1928. |
| APA | Xu, Zhenwu.,Sun, Lin.,Tang, Guoping.,Chen, Xiaohua.,Niu, Xiangyu.,...&Yu, Yangbo.(2022).Do Model Results Vary under Different Routing Algorithms Based on a Distributed Ecohydrological Model?.JOURNAL OF HYDROMETEOROLOGY,23(12),1913-1928. |
| MLA | Xu, Zhenwu,et al."Do Model Results Vary under Different Routing Algorithms Based on a Distributed Ecohydrological Model?".JOURNAL OF HYDROMETEOROLOGY 23.12(2022):1913-1928. |
入库方式： OAI收割
来源：地理科学与资源研究所
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