The critical role of the routing scheme in simulating peak river discharge in global hydrological models

doi:10.1088/1748-9326/aa7250

	The critical role of the routing scheme in simulating peak river discharge in global hydrological models
	Zhao, Fang 1; Veldkamp, Ted I. E.2; Frieler, Katja 1; Schewe, Jacob 1; Ostberg, Sebastian 1,3; Willner, Sven 1; Schauberger, Bernhard 1,4; Gosling, Simon N.5; Schmied, Hannes Mueller 6,7; Portmann, Felix T.6
刊名	ENVIRONMENTAL RESEARCH LETTERS
	2017-07-01
卷号	12 期号:7 页码:14
关键词	ISIMIP global hydrological models peak river discharge river routing flood daily runoff GRDC
ISSN号	1748-9326
DOI	10.1088/1748-9326/aa7250
通讯作者	Zhao, Fang(fangzhao@pik-potsdam.de)
英文摘要	Global hydrological models (GHMs) have been applied to assess global flood hazards, but their capacity to capture the timing and amplitude of peak river discharge-which is crucial in flood simulations-has traditionally not been the focus of examination. Here we evaluate to what degree the choice of river routing scheme affects simulations of peak discharge and may help to provide better agreement with observations. To this end we use runoff and discharge simulations of nine GHMs forced by observational climate data (1971-2010) within the ISIMIP2a project. The runoff simulations were used as input for the global river routing model CaMa-Flood. The simulated daily discharge was compared to the discharge generated by each GHM using its native river routing scheme. For each GHM both versions of simulated discharge were compared to monthly and daily discharge observations from 1701 GRDC stations as a benchmark. CaMaFlood routing shows a general reduction of peak river discharge and a delay of about two to three weeks in its occurrence, likely induced by the buffering capacity of floodplain reservoirs. For a majority of river basins, discharge produced by CaMa-Flood resulted in a better agreement with observations. In particular, maximum daily discharge was adjusted, with a multi-model averaged reduction in bias over about 2/3 of the analysed basin area. The increase in agreement was obtained in both managed and near-natural basins. Overall, this study demonstrates the importance of routing scheme choice in peak discharge simulation, where CaMa-Flood routing accounts for floodplain storage and backwater effects that are not represented in most GHMs. Our study provides important hints that an explicit parameterisation of these processes may be essential in future impact studies.
资助项目	EU FP7 project HELIX[FP7-603864-2] ; German Federal Ministry of Education and Research (BMBF)[01LS1201A1] ; German Federal Ministry of Education and Research (BMBF)[01LS1201A2] ; Integrated Assessment Research program through the Integrated Multi-sector, Multiscale Modeling (IM3) Scientific Focus Area (SFA) - Biological and Environmental Research Division of Office of Science, US Department of Energy (DOE) ; US DOE[DE-AC05-76RL01830] ; European Research Council Synergy grant[ERC-2013-SyG610028-IMBALANCE-P] ; Open Access Fund of the Leibniz Association
WOS关键词	CLIMATE-CHANGE ; FLOOD HAZARD ; CONTINENTAL-SCALE ; INTEGRATED MODEL ; DIRECTION MAP ; AMAZON BASIN ; RUNOFF ; PRECIPITATION ; WETLANDS ; SYSTEMS
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000404943800003
资助机构	EU FP7 project HELIX ; German Federal Ministry of Education and Research (BMBF) ; Integrated Assessment Research program through the Integrated Multi-sector, Multiscale Modeling (IM3) Scientific Focus Area (SFA) - Biological and Environmental Research Division of Office of Science, US Department of Energy (DOE) ; US DOE ; European Research Council Synergy grant ; Open Access Fund of the Leibniz Association
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/62920]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Fang
作者单位	1.Potsdam Inst Climate Impact Res, Potsdam, Germany 2.Vrije Univ Amsterdam, Inst Environm Studies IVM, Amsterdam, Netherlands 3.Humboldt Univ, Geog Dept, Berlin, Germany 4.Lab Sci Climat & Environm, Gif Sur Yvette, France 5.Univ Nottingham, Sch Geog, Nottingham, England 6.Goethe Univ Frankfurt, Inst Phys Geog, Frankfurt, Germany 7.Senckenberg Biodivers & Climate Res Ctr BiK F, Frankfurt, Germany 8.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA 9.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 10.Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan
推荐引用方式 GB/T 7714	Zhao, Fang,Veldkamp, Ted I. E.,Frieler, Katja,et al. The critical role of the routing scheme in simulating peak river discharge in global hydrological models[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(7):14.
APA	Zhao, Fang.,Veldkamp, Ted I. E..,Frieler, Katja.,Schewe, Jacob.,Ostberg, Sebastian.,...&Yamazaki, Dai.(2017).The critical role of the routing scheme in simulating peak river discharge in global hydrological models.ENVIRONMENTAL RESEARCH LETTERS,12(7),14.
MLA	Zhao, Fang,et al."The critical role of the routing scheme in simulating peak river discharge in global hydrological models".ENVIRONMENTAL RESEARCH LETTERS 12.7(2017):14.