气候变化领域集成服务门户(CCPortal): Disentangling the impacts of human and environmental change on catchment response during Hurricane Harvey

CCPortal

DOI	10.1088/1748-9326/ab5234
	Disentangling the impacts of human and environmental change on catchment response during Hurricane Harvey
	Sebastian A.; Gori A.; Blessing R.B.; Van Der Wiel K.; Bass B.
发表日期	2019
ISSN	17489318
卷号	14 期号:12
英文摘要	Flooding is a function of hydrologic, climatologic, and land use characteristics. However, the relative contribution of these factors to flood risk over the long-term is uncertain. In response to this knowledge gap, this study quantifies how urbanization and climatological trends influenced flooding in the greater Houston region during Hurricane Harvey. The region - characterized by extreme precipitation events, low topographic relief, and clay-dominated soils - is naturally flood prone, but it is also one of the fastest growing urban areas in the United States. This rapid growth has contributed to increased runoff volumes and rates in areas where anthropogenic climate changes has also been shown to be contributing to extreme precipitation. To disentangle the relative contributions of urban development and climatic changes on flooding during Hurricane Harvey, we simulate catchment response using a spatially-distributed hydrologic model under 1900 and 2017 conditions. This approach provides insight into how timing, volume, and peak discharge in response to Harvey-like events have evolved over more than a century. Results suggest that over the past century, urban development and climate change have had a large impact on peak discharge at stream gauges in the Houston region, where development alone has increased peak discharges by 54% (±28%) and climate change has increased peak discharge by about 20% (±3%). When combined, urban development and climate change nearly doubled peak discharge (84% ±35%) in the Houston area during Harvey compared to a similar event in 1900, suggesting that land use change has magnified the effects of climate change on catchment response. The findings support a precautionary approach to flood risk management that explicitly considers how current land use decisions may impact future conditions under varying climate trends, particularly in low-lying coastal cities. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	attribution; climate change; flood risk; hydrology; tropical cyclone; urbanization
语种	英语
scopus关键词	Catchments; Flood control; Floods; Forestry; Hurricanes; Hydrology; Land use; Precipitation (meteorology); Risk management; Runoff; Storms; Urban growth; Anthropogenic climate changes; attribution; Extreme precipitation events; Flood risks; Precautionary approach; Spatially distributed hydrologic modeling; Tropical cyclone; urbanization; Climate change; anthropogenic effect; catchment; climate change; environmental change; flooding; hurricane event; hydrological response; hydrology; land use change; land use planning; long-term change; nature-society relations; risk assessment; tropical cyclone; 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/154307
作者单位	Department of Marine Sciences, Texas AandM University at Galveston, Galveston, TX, United States; Department of Civil and Environmental Engineering, Rice University, Houston, TX, United States; Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States; Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands; Woodard and Curran, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Sebastian A.,Gori A.,Blessing R.B.,et al. Disentangling the impacts of human and environmental change on catchment response during Hurricane Harvey[J],2019,14(12).
APA	Sebastian A.,Gori A.,Blessing R.B.,Van Der Wiel K.,&Bass B..(2019).Disentangling the impacts of human and environmental change on catchment response during Hurricane Harvey.Environmental Research Letters,14(12).
MLA	Sebastian A.,et al."Disentangling the impacts of human and environmental change on catchment response during Hurricane Harvey".Environmental Research Letters 14.12(2019).