气候变化领域集成服务门户(CCPortal): Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations

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DOI	10.5194/hess-22-305-2018
	Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations
	Zhou Q.; Leng G.; Huang M.
发表日期	2018
ISSN	1027-5606
起始页码	305
结束页码	316
卷号	22 期号:1
英文摘要	As China becomes increasingly urbanised, flooding has become a regular occurrence in its major cities. Assessing the effects of future climate change on urban flood volumes is crucial to informing better management of such disasters given the severity of the devastating impacts of flooding (e.g. the 2016 flooding events across China). Although recent studies have investigated the impacts of future climate change on urban flooding, the effects of both climate change mitigation and adaptation have rarely been accounted for together in a consistent framework. In this study, we assess the benefits of mitigating climate change by reducing greenhouse gas (GHG) emissions and locally adapting to climate change by modifying drainage systems to reduce urban flooding under various climate change scenarios through a case study conducted in northern China. The urban drainage model – Storm Water Management Model – was used to simulate urban flood volumes using current and two adapted drainage systems (i.e. pipe enlargement and low-impact development, LID), driven by bias-corrected meteorological forcing from five general circulation models in the Coupled Model Intercomparison Project Phase 5 archive. Results indicate that urban flood volume is projected to increase by 52 % over 2020–2040 compared to the volume in 1971–2000 under the business-as-usual scenario (i.e. Representative Concentration Pathway (RCP) 8.5). The magnitudes of urban flood volumes are found to increase nonlinearly with changes in precipitation intensity. On average, the projected flood volume under RCP 2.6 is 13 % less than that under RCP 8.5, demonstrating the benefits of global-scale climate change mitigation efforts in reducing local urban flood volumes. Comparison of reduced flood volumes between climate change mitigation and local adaptation (by improving drainage systems) scenarios suggests that local adaptation is more effective than climate change mitigation in reducing future flood volumes. This has broad implications for the research community relative to drainage system design and modelling in a changing environment. This study highlights the importance of accounting for local adaptation when coping with future urban floods. © Author(s) 2018.
语种	英语
scopus关键词	Drainage; Floods; Gas emissions; Greenhouse gases; Water management; Climate change mitigation; Climate change scenarios; Coupled Model Intercomparison Project; General circulation model; Low impact development; Meteorological forcing; Precipitation intensity; Storm water management model; Climate change; adaptive management; climate change; climate effect; CMIP; disaster management; flood; flooding; future prospect; general circulation model; global climate; greenhouse gas; precipitation intensity; urban area; urban drainage; China; Hohhot; Nei Monggol
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160169
作者单位	Zhou, Q., School of Civil and Transportation Engineering, Guangdong University of Technology, Waihuan Xi Road, Guangzhou, 510006, China, Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, United States; Leng, G., Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, United States, Environmental Change Institute, University of Oxford, Oxford, OX1 3QY, United Kingdom; Huang, M., Earth System Analysis and Modeling Group, Pacific Northwest National Laboratory, Richland, WA 99352, United States
推荐引用方式 GB/T 7714	Zhou Q.,Leng G.,Huang M.. Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations[J],2018,22(1).
APA	Zhou Q.,Leng G.,&Huang M..(2018).Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations.Hydrology and Earth System Sciences,22(1).
MLA	Zhou Q.,et al."Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations".Hydrology and Earth System Sciences 22.1(2018).