Future sea level rise dominates changes in worst case extreme sea levels along the global coastline by 2100

Future sea level rise dominates changes in worst case extreme sea levels along the global coastline by 2100
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到 2100 年,未来海平面上升将主导全球海岸线最坏情况极端海平面的变化

DOI:
10.1088/1748-9326/acb504
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发表时间:
2023
影响因子:
6.7
通讯作者:
Jevrejeva S
Jevrejeva S
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Jevrejeva S

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我们提供了到2100年全球海岸线沿着极端海平面(ESL)的最坏情况的幅度。ESL的最坏情况场景是根据与风暴潮和波浪相关的海面高度(100年一遇,第95百分位数)、高潮(第95百分位数)和低概率海平面上升场景(第95百分位数)的组合计算的。在这些条件下,21世纪末的ESL有5%的机会超过4.2米(全球沿海平均值),而基线期(1980-2014年)为2.6米。到2100年,全球近45%的海岸线将经历超过全球平均值4.2米的ESL,其中东海,日本和北欧沿海地区高达9-10米。到2100年,高达86%的沿海地区将面临3米以上(100年一遇)的ESL,而目前这一比例为33%。高达90%的ESL幅度增加是由未来海平面上升驱动的,而10%与风暴潮和海浪的变化有关。到2030-2040年,热带地区将至少每年经历一次目前100年一遇的ESL重现期。到2100年,全球所有海岸线的频率将增加100倍。
We provide the magnitude of a worst case scenario for extreme sea levels (ESLs) along the global coastline by 2100. This worst case scenario for ESLs is calculated as a combination of sea surface height associated with storm surge and wave (100 year return period, the 95th percentile), high tide (the 95th percentile) and a low probability sea level rise scenario (the 95th percentile). Under these conditions, end-of-21st century ESLs have a 5% chance of exceeding 4.2 m (global coastal average), compared to 2.6 m during the baseline period (1980–2014). By 2100 almost 45% of the global coastline would experience ESLs above the global mean of 4.2 m, with up to 9–10 m for the East China Sea, Japan and North European coastal areas. Up to 86% of coastal locations would face ESLs above 3 m (100 year return period) by 2100, compared to 33% currently. Up to 90% of increases in magnitude of ESLs are driven by future sea level rise, compare to 10% associated with changes in storm surges and waves. By 2030–2040 the present-day 100 year return period for ESLs would be experienced at least once a year in tropical areas. This 100-fold increase in frequency will take place on all global coastlines by 2100.
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影响因子: 4.6
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