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<p>Coastal communities around the world are becoming increasingly vulnerable to climate change driven natural hazards. Yet, a global scale coastal vulnerability assessment has not been attempted to date. Here, by employing currently available global datasets together with the widely used Coastal Vulnerability Index (CVI) approach, we assess present-day coastal vulnerability at the global scale. Our country level assessment shows that median coastal vulnerability is highest in Aruba, Benin, Togo, the&#xa0;Democratic Republic of the Congo, Bonaire, Sint Eustatius and Saba,&#xa0;Sri Lanka, Nigeria, French Guiana, Ghana and Liberia. At the IPCC AR6 region scale, Central North America, and Northern South America emerge as the regions with the highest median coastal vulnerability. Results at both country and regional scales indicate that tropical and subtropical regions are more vulnerable to coastal hazards. In countries with High or Very High median CVI, the dominant contributors to present-day coastal vulnerability are geomorphology, mean tidal range, and coastal slope.</p>

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A global assessment of coastal vulnerability and dominant contributors

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月13日

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  • Vindhya Basnayake,
  • Trang Minh Duong,
  • Roshanka Ranasinghe,
  • Rafael Almar,
  • Kathelijne M. Wijnberg

摘要

Coastal communities around the world are becoming increasingly vulnerable to climate change driven natural hazards. Yet, a global scale coastal vulnerability assessment has not been attempted to date. Here, by employing currently available global datasets together with the widely used Coastal Vulnerability Index (CVI) approach, we assess present-day coastal vulnerability at the global scale. Our country level assessment shows that median coastal vulnerability is highest in Aruba, Benin, Togo, the Democratic Republic of the Congo, Bonaire, Sint Eustatius and Saba, Sri Lanka, Nigeria, French Guiana, Ghana and Liberia. At the IPCC AR6 region scale, Central North America, and Northern South America emerge as the regions with the highest median coastal vulnerability. Results at both country and regional scales indicate that tropical and subtropical regions are more vulnerable to coastal hazards. In countries with High or Very High median CVI, the dominant contributors to present-day coastal vulnerability are geomorphology, mean tidal range, and coastal slope.