干旱区生态环境知识资源中心(Arid): A coupled atmospheric-hydrologic modeling system with variable grid sizes for rainfall-runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?

Arid

DOI	10.5194/hess-24-3933-2020
	A coupled atmospheric-hydrologic modeling system with variable grid sizes for rainfall-runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?
	Tian, Jiyang; Liu, Jia; Wang, Yang; Wang, Wei; Li, Chuanzhe; Hu, Chunqi
通讯作者	Liu, J
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2020
卷号	24 期号:8 页码:3933-3949
英文摘要	The coupled atmospheric-hydrologic modeling system is an effective way to improve the accuracy of rainfall-runoff modeling and extend the lead time in real-time flood forecasting. The aim of this study is to explore the appropriate coupling scale of the coupled atmospheric- hydrologic modeling system, which is established by the Weather Research and Forecasting (WRF) model and the gridded Hebei model with three different sizes (1km x 1 km, 3 km x 3 km and 9 km x 9 km). The Hebei model is a conceptual rainfall-runoff model designed to describe a mixed runoff generation mechanism, including both storage excess and infiltration excess, in the semi-humid and semi-dry area of northern China. The soil moisture storage capacity and infiltration capacity of different grids in the gridded Hebei model are obtained and dispersed using the topographic index. The lumped Hebei model is also used to establish the lumped atmospheric-hydrologic coupled system as a reference system. Four 24 h storm events occurring at two small-and medium-scale sub-watersheds in northern China are selected as case studies. Contrastive analyses of the flood process simulations from the gridded and lumped systems are carried out. The results show that the flood simulation results may not always be improved with higher-dimension precision and more complicated system, and the grid size selection has a strong relationship with the rainfall evenness. For the storm events with uniform spatial distribution, the coupling scale has less impact on flood simulation results, and the lumped system also performs well. For the storm events with uneven spatiotemporal distribution, the corrected rainfall can improve the simulation results significantly, and higher resolution leads to better flood process simulation. The results can help to establish the appropriate coupled atmospheric- hydrologic modeling system to improve the flood forecasting accuracy.
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000562127600001
WOS关键词	DATA ASSIMILATION ; WRF MODEL ; FLASH-FLOOD ; PRECIPITATION ; RADAR ; PREDICTION ; FORECASTS ; PARAMETERIZATION ; VERIFICATION ; SENSITIVITY
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325788
作者单位	[Tian, Jiyang; Liu, Jia; Wang, Yang; Wang, Wei; Li, Chuanzhe] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; [Wang, Yang] Univ Pittsburgh, Swanson Sch Engn, Pittsburgh, PA 15261 USA; [Wang, Wei] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China; [Hu, Chunqi] Bur Water Resources Survey Hebei, Shijiazhuang 050031, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Tian, Jiyang,Liu, Jia,Wang, Yang,et al. A coupled atmospheric-hydrologic modeling system with variable grid sizes for rainfall-runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?[J]. 河海大学,2020,24(8):3933-3949.
APA	Tian, Jiyang,Liu, Jia,Wang, Yang,Wang, Wei,Li, Chuanzhe,&Hu, Chunqi.(2020).A coupled atmospheric-hydrologic modeling system with variable grid sizes for rainfall-runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?.HYDROLOGY AND EARTH SYSTEM SCIENCES,24(8),3933-3949.
MLA	Tian, Jiyang,et al."A coupled atmospheric-hydrologic modeling system with variable grid sizes for rainfall-runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?".HYDROLOGY AND EARTH SYSTEM SCIENCES 24.8(2020):3933-3949.