Projections of multiple climate-related coastal hazards for the US Southeast Atlantic

IF 29.6 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Nature Climate Change Pub Date : 2024-11-21 DOI:10.1038/s41558-024-02180-2
Patrick L. Barnard, Kevin M. Befus, Jeffrey J. Danielson, Anita C. Engelstad, Li H. Erikson, Amy C. Foxgrover, Maya K. Hayden, Daniel J. Hoover, Tim W. B. Leijnse, Chris Massey, Robert McCall, Norberto C. Nadal-Caraballo, Kees Nederhoff, Andrea C. O’Neill, Kai A. Parker, Manoochehr Shirzaei, Leonard O. Ohenhen, Peter W. Swarzenski, Jennifer A. Thomas, Maarten van Ormondt, Sean Vitousek, Kilian Vos, Nathan J. Wood, Jeanne M. Jones, Jamie L. Jones
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Abstract

Faced with accelerating sea level rise and changing ocean storm conditions, coastal communities require comprehensive assessments of climate-driven hazard impacts to inform adaptation measures. Previous studies have focused on flooding but rarely on other climate-related coastal hazards, such as subsidence, beach erosion and groundwater. Here, we project societal exposure to multiple hazards along the Southeast Atlantic coast of the United States. Assuming 1 m of sea level rise, more than 70% of the coastal residents and US$1 trillion in property are in areas projected to experience shallow and emerging groundwater, 15 times higher than daily flooding. Storms increase flooding exposure by an order of magnitude over daily flooding, which could impact up to ~50% of all coastal residents and US$770 billion in property value. The loss of up to ~80% of present-day beaches and high subsidence rates that currently affect over 1 million residents will exacerbate flooding and groundwater hazard risks.

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美国东南大西洋与气候相关的多种沿海灾害预测
面对海平面的加速上升和海洋风暴条件的不断变化,沿海社区需要对气候引起的灾害影响进行全面评估,以便采取适应措施。以往的研究主要关注洪水,但很少关注与气候相关的其他沿海灾害,如沉降、海滩侵蚀和地下水。在此,我们预测了美国东南大西洋沿岸社会面临的多种灾害。假设海平面上升 1 米,预计 70% 以上的沿海居民和 1 万亿美元的财产所在地区将遭遇浅层和新出现的地下水,比日常洪水高 15 倍。与日常洪水相比,暴风雨使洪水风险增加了一个数量级,这可能会影响多达 ~50% 的沿海居民和 7,700 亿美元的财产价值。目前影响 100 多万居民的多达 ~80% 的海滩消失和高沉降率将加剧洪水和地下水灾害风险。
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来源期刊
Nature Climate Change
Nature Climate Change ENVIRONMENTAL SCIENCES-METEOROLOGY & ATMOSPHERIC SCIENCES
CiteScore
40.30
自引率
1.60%
发文量
267
审稿时长
4-8 weeks
期刊介绍: Nature Climate Change is dedicated to addressing the scientific challenge of understanding Earth's changing climate and its societal implications. As a monthly journal, it publishes significant and cutting-edge research on the nature, causes, and impacts of global climate change, as well as its implications for the economy, policy, and the world at large. The journal publishes original research spanning the natural and social sciences, synthesizing interdisciplinary research to provide a comprehensive understanding of climate change. It upholds the high standards set by all Nature-branded journals, ensuring top-tier original research through a fair and rigorous review process, broad readership access, high standards of copy editing and production, rapid publication, and independence from academic societies and other vested interests. Nature Climate Change serves as a platform for discussion among experts, publishing opinion, analysis, and review articles. It also features Research Highlights to highlight important developments in the field and original reporting from renowned science journalists in the form of feature articles. Topics covered in the journal include adaptation, atmospheric science, ecology, economics, energy, impacts and vulnerability, mitigation, oceanography, policy, sociology, and sustainability, among others.
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