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DOI	10.5194/gmd-17-1197-2024
	Disentangling the hydrological and hydraulic controls on streamflow variability in Energy Exascale Earth System Model (E3SM) V2-a case study in the Pantanal region
	Xu, Donghui; Bisht, Gautam; Tan, Zeli; Liao, Chang; Zhou, Tian; Li, Hong-Yi; Leung, L. Ruby
发表日期	2024
ISSN	1991-959X
EISSN	1991-9603
起始页码	17
结束页码	3
卷号	17 期号:3
英文摘要	Streamflow variability plays a crucial role in shaping the dynamics and sustainability of Earth's ecosystems, which can be simulated and projected by a river routing model coupled with a land surface model. However, the simulation of streamflow at large scales is subject to considerable uncertainties, primarily arising from two related processes: runoff generation (hydrological process) and river routing (hydraulic process). While both processes have impacts on streamflow variability, previous studies only calibrated one of the two processes to reduce biases in the simulated streamflow. Calibration focusing only on one process can result in unrealistic parameter values to compensate for the bias resulting from the other process; thus other water-related variables remain poorly simulated. In this study, we performed several experiments with the land and river components of the Energy Exascale Earth System Model (E3SM) over the Pantanal region to disentangle the hydrological and hydraulic controls on streamflow variability in coupled land-river simulations. Our results show that the generation of subsurface runoff is the most important factor for streamflow variability contributed by the runoff generation process, while floodplain storage effect and main-channel roughness have significant impacts on streamflow variability through the river routing process. We further propose a two-step procedure to robustly calibrate the two processes together. The impacts of runoff generation and river routing on streamflow are appropriately addressed with the two-step calibration, which may be adopted by developers of land surface and earth system models to improve the modeling of streamflow.
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001189714300001
来源期刊	GEOSCIENTIFIC MODEL DEVELOPMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301635
作者单位	United States Department of Energy (DOE); Pacific Northwest National Laboratory; University of Houston System; University of Houston
推荐引用方式 GB/T 7714	Xu, Donghui,Bisht, Gautam,Tan, Zeli,et al. Disentangling the hydrological and hydraulic controls on streamflow variability in Energy Exascale Earth System Model (E3SM) V2-a case study in the Pantanal region[J],2024,17(3).
APA	Xu, Donghui.,Bisht, Gautam.,Tan, Zeli.,Liao, Chang.,Zhou, Tian.,...&Leung, L. Ruby.(2024).Disentangling the hydrological and hydraulic controls on streamflow variability in Energy Exascale Earth System Model (E3SM) V2-a case study in the Pantanal region.GEOSCIENTIFIC MODEL DEVELOPMENT,17(3).
MLA	Xu, Donghui,et al."Disentangling the hydrological and hydraulic controls on streamflow variability in Energy Exascale Earth System Model (E3SM) V2-a case study in the Pantanal region".GEOSCIENTIFIC MODEL DEVELOPMENT 17.3(2024).