气候变化领域集成服务门户(CCPortal): Sensitivity of seasonal flood simulations to regional climate model spatial resolution

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DOI	10.1007/s00382-019-04789-y
	Sensitivity of seasonal flood simulations to regional climate model spatial resolution
	Castaneda-Gonzalez M.; Poulin A.; Romero-Lopez R.; Arsenault R.; Brissette F.; Turcotte R.
发表日期	2019
ISSN	0930-7575
起始页码	4337
结束页码	4354
卷号	53 期号:2020-07-08
英文摘要	The potential impacts of floods are of significant concern to our modern society raising the need to identify and quantify all the uncertainties that can impact their simulations. Climate simulations at finer spatial resolutions are expected to bring more confidence in these hydrological simulations. However, the impact of the increasing spatial resolutions of climate simulations on floods simulations has to be evaluated. To address this issue, this paper assesses the sensitivity of summer–fall flood simulations to the Canadian Regional Climate Model (CRCM) grid resolution. Three climate simulations issued from the fifth version of the CRCM (CRCM5) driven by the ERA-Interim reanalysis at 0.44°, 0.22° and 0.11° resolutions are analysed at a daily time step for the 1981–2010 period. Raw CRCM5 precipitation and temperature outputs are used as inputs in the simple lumped conceptual hydrological model MOHYSE to simulate streamflows over 50 Quebec (Canada) basins. Summer–fall flooding is analysed by estimating four flood indicators: the 2-year, 5-year, 10-year and 20-year return periods from the CRCM5-driven streamflows. The results show systematic impacts of spatial resolution on CRCM5 outputs and seasonal flood simulations. Floods simulated with coarser climate datasets present smaller peak discharges than those simulated with the finer climate outputs. Smaller catchments show larger sensitivity to spatial resolution as more detail can be obtained from the finer grids. Overall, this work contributes to understanding the sensitivity of streamflow modelling to the climate model’s resolution, highlighting yet another uncertainty source to consider in hydrological climate change impact studies. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	CRCM5; Floods; MOHYSE; Return periods; Spatial resolution
语种	英语
scopus关键词	autumn; climate change; climate modeling; computer simulation; flood; hydrological modeling; hydrological response; numerical model; regional climate; return period; seasonal variation; sensitivity analysis; spatial resolution; streamflow; summer; uncertainty analysis; Canada; Quebec [Canada]
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145975
作者单位	École de technologie supérieure, 1100 Notre-Dame Street West, Montreal, H3C 1K3, Canada; Universidad Veracruzana, Lomas del Estadio S/N, Zona Universitaria, Xalapa, 91000, Mexico; Ministère du Développement durable, Environnement et Lutte contre les changements climatiques, 675 boulevard René Lévesque Est, Quebec, QC G1R 5V7, Canada
推荐引用方式 GB/T 7714	Castaneda-Gonzalez M.,Poulin A.,Romero-Lopez R.,et al. Sensitivity of seasonal flood simulations to regional climate model spatial resolution[J],2019,53(2020-07-08).
APA	Castaneda-Gonzalez M.,Poulin A.,Romero-Lopez R.,Arsenault R.,Brissette F.,&Turcotte R..(2019).Sensitivity of seasonal flood simulations to regional climate model spatial resolution.Climate Dynamics,53(2020-07-08).
MLA	Castaneda-Gonzalez M.,et al."Sensitivity of seasonal flood simulations to regional climate model spatial resolution".Climate Dynamics 53.2020-07-08(2019).