Global probabilistic projections of extreme sea levels show intensification of coastal flood hazard.
Global probabilistic projections of extreme sea levels show intensification of coastal flood hazard.
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DOI:
10.1038/s41467-018-04692-w
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发表时间:
2018-06-18
影响因子:
16.6
通讯作者:
Feyen L
中科院分区:
文献类型:
--
作者:
Vousdoukas MI;Mentaschi L;Voukouvalas E;Verlaan M;Jevrejeva S;Jackson LP;Feyen L
Global warming is expected to drive increasing extreme sea levels (ESLs) and flood risk along the world’s coastlines. In this work we present probabilistic projections of ESLs for the present century taking into consideration changes in mean sea level, tides, wind-waves, and storm surges. Between the year 2000 and 2100 we project a very likely increase of the global average 100-year ESL of 34–76 cm under a moderate-emission-mitigation-policy scenario and of 58–172 cm under a business as usual scenario. Rising ESLs are mostly driven by thermal expansion, followed by contributions from ice mass-loss from glaciers, and ice-sheets in Greenland and Antarctica. Under these scenarios ESL rise would render a large part of the tropics exposed annually to the present-day 100-year event from 2050. By the end of this century this applies to most coastlines around the world, implying unprecedented flood risk levels unless timely adaptation measures are taken. Extreme sea levels are a flood risk along the world’s coastlines. Here the authors carry out probabilistic projections of extreme sea levels and show that for the present century coastal flood hazards will increase significantly along most of the global coastlines.
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