气候变化领域集成服务门户(CCPortal): Quantifying the Impact of Climate Change on Peak Stream Discharge for Watersheds of Varying Sizes in the Coastal Plain of Virginia

CCPortal

DOI	10.1061/JHYEFF.HEENG-6114
	Quantifying the Impact of Climate Change on Peak Stream Discharge for Watersheds of Varying Sizes in the Coastal Plain of Virginia
	Morsy, Mohamed M.; Roy, Binata; Shen, Yawen; Sadler, Jeffrey M.; Chen, Alexander B.; Zahura, Faria T.; Goodall, Jonathan L.
发表日期	2024
ISSN	1084-0699
EISSN	1943-5584
起始页码	29
结束页码	3
卷号	29 期号:3
英文摘要	Civil infrastructure systems have traditionally been designed assuming stationarity in precipitation. However, climate change is making this assumption invalid, affecting both existing infrastructure designed assuming stationarity and the design of new infrastructure. Although many studies have analyzed potential increases in precipitation due to climate change, fewer have attempted to translate these changes into the impact of stream discharge in a way that could be incorporated into infrastructure design. Therefore, this study aimed to assess the potential impact of climate change on both rainfall and peak discharge to aid in bridge and road infrastructure design. Results showed that the median increase in model-derived rainfall intensity across the selected rainfall stations in Virginia was 10%-30% for the midcentury (centered on 2045) and 10%-40% for the end of the century (centered on 2085), with the higher increase for the Representative Concentration Pathway 8.5 (RCP8.5) scenario compared with the RCP4.5 scenario. A regression analysis was performed to relate peak discharge to watershed size for midcentury and end-of-century periods for the study area. In terms of peak discharge, smaller watersheds (<25 km(2)) had a percent increase for a given return period that was independent of the watershed size. Considering both RCP4.5 and RCP8.5 scenarios, for a 100-year return period, the increase was 39% and 49%, respectively, for the midcentury periods and 36% and 52%, respectively, for the end-of-century periods. For larger watersheds (>25 km(2)), the increase in peak discharge decreased as the watershed size increased, suggesting a dampening effect for larger watersheds in this coastal plain region of Virginia. For a watershed size of 1,700 km(2), the largest watershed included in the analysis, the percent increase in peak discharge for a 100-year return period was 14% and 39% during the midcentury, and 16% and 40% at the end of the century, for the two emission scenarios. These findings and the general methodology used in the study can aid transportation and water resources engineers in incorporating changing rainfall impacts into assessing current infrastructure and designing future infrastructure. They can also help to prioritize resources for more costly hydraulic analyses of potentially vulnerable infrastructure.
英文关键词	Climate change; Flooding; Infrastructure vulnerability; Two-dimensional (2D) hydrodynamic modeling
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS类目	Engineering, Civil ; Environmental Sciences ; Water Resources
WOS记录号	WOS:001202621600008
来源期刊	JOURNAL OF HYDROLOGIC ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308731
作者单位	Egyptian Knowledge Bank (EKB); Cairo University; University of Virginia; Bangladesh University of Engineering & Technology (BUET); Oklahoma State University System; Oklahoma State University - Stillwater
推荐引用方式 GB/T 7714	Morsy, Mohamed M.,Roy, Binata,Shen, Yawen,et al. Quantifying the Impact of Climate Change on Peak Stream Discharge for Watersheds of Varying Sizes in the Coastal Plain of Virginia[J],2024,29(3).
APA	Morsy, Mohamed M..,Roy, Binata.,Shen, Yawen.,Sadler, Jeffrey M..,Chen, Alexander B..,...&Goodall, Jonathan L..(2024).Quantifying the Impact of Climate Change on Peak Stream Discharge for Watersheds of Varying Sizes in the Coastal Plain of Virginia.JOURNAL OF HYDROLOGIC ENGINEERING,29(3).
MLA	Morsy, Mohamed M.,et al."Quantifying the Impact of Climate Change on Peak Stream Discharge for Watersheds of Varying Sizes in the Coastal Plain of Virginia".JOURNAL OF HYDROLOGIC ENGINEERING 29.3(2024).