气候变化领域集成服务门户(CCPortal): Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey

CCPortal

DOI	10.1088/1748-9326/abc4ff
	Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey
	Li X.; Zhao G.; Nielsen-Gammon J.; Salazar J.; Wigmosta M.; Sun N.; Judi D.; Gao H.
发表日期	2020
ISSN	17489318
卷号	15 期号:12
英文摘要	The objective of this study is to evaluate the effects of urbanization, an antecedent rainfall event (ARE), and varying cyclone tracks on the streamflow - and thus the subsequent reservoir status - during the floods caused by Hurricane Harvey in August-September 2017. Through a hydrological modeling approach, we examined how these factors influenced the inflows, peak pool elevations, and outflows of the two most important detention reservoirs in the Houston region, the Addicks and Barker Reservoirs. A high-resolution rainfall reanalysis dataset for extreme storm events, along with a suite of synthetic rainfall values from a variety of storm tracks, were adopted to represent both the truth and the maximum possible rainfall during the Hurricane Harvey period. The results showed the following: Urbanization only led to slight increases in peak inflows, not necessarily to an increase in peak pool elevations, and the ARE contributed to the peak inflow and pool elevation slightly. In contrast, if the cyclone had followed the most adverse track consistent with earlier forecasts (all else being equal), the total volumetric flow into the two reservoirs would have been significantly larger (37% and 49% respectively), thus increasing the peak pool elevations by 1.06 and 1.37 m respectively. These results suggest that large uncertainties exist for flood management at a watershed scale during hurricanes, because of the uncertainties in the cyclone track. This would remain true even if storm-relative precipitation rates could be predicted perfectly. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	antecedent rainfall event; cyclone track; flood simulation; Hurricane Harvey; maximum possible rainfall; urbanization
语种	英语
scopus关键词	Flood control; Floods; Hurricane effects; Lakes; Rain; Storms; Antecedent rainfall; Extreme storm events; Flood management; Hydrological modeling; Precipitation rates; Synthetic rainfalls; Volumetric flow; Watershed scale; Reservoirs (water); cyclone; extreme event; hurricane; hydrological modeling; peak flow; rainfall; storm track; urbanization; Houston; Texas; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153471
作者单位	Zachry Department of Civil and Environmental Engineering, Texas AandM University, College Station, TX 77843, United States; Department of Atmospheric Sciences, Texas AandM University, College Station, TX 77843, United States; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, United States
推荐引用方式 GB/T 7714	Li X.,Zhao G.,Nielsen-Gammon J.,et al. Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey[J],2020,15(12).
APA	Li X..,Zhao G..,Nielsen-Gammon J..,Salazar J..,Wigmosta M..,...&Gao H..(2020).Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey.Environmental Research Letters,15(12).
MLA	Li X.,et al."Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey".Environmental Research Letters 15.12(2020).