@article{fdi:010082249, title = {{A} global analysis of extreme coastal water levels with implications for potential coastal overtopping}, author = {{A}lmar, {R}afa{\¨e}l and {R}anasinghe, {R}. and {B}ergsma, {E}. {W}. {J}. and {D}iaz, {H}. and {M}elet, {A}. and {P}apa, {F}abrice and {V}ousdoukas, {M}. and {A}thanasiou, {P}. and {D}ada, {O}. and {A}lmeida, {L}. {P}. and {K}estenare, {E}lodie}, editor = {}, language = {{ENG}}, abstract = {{C}limate change and anthropogenic pressures are widely expected to exacerbate coastal hazards such as episodic coastal flooding. {T}his study presents global-scale potential coastal overtopping estimates, which account for not only the effects of sea level rise and storm surge, but also for wave runup at exposed open coasts. {H}ere we find that the globally aggregated annual overtopping hours have increased by almost 50% over the last two decades. {A} first-pass future assessment indicates that globally aggregated annual overtopping hours will accelerate faster than the global mean sea-level rise itself, with a clearly discernible increase occurring around mid-century regardless of climate scenario. {U}nder {RCP} 8.5, the globally aggregated annual overtopping hours by the end of the 21(st)-century is projected to be up to 50 times larger compared to present-day. {A}s sea level continues to rise, more regions around the world are projected to become exposed to coastal overtopping. {A}s sea levels rise, coasts are being increasingly threatened by overtopping caused by the combination of sea level rise, storm surge and wave runup. {H}ere the authors find that global coastal overtopping has increased by over 50% in the last two decades, and under a {RCP} 8.5 scenario this could increase up to 50 times by 2100 compared to today.}, keywords = {{MONDE}}, booktitle = {}, journal = {{N}ature {C}ommunications}, volume = {12}, numero = {1}, pages = {3775 [9 ]}, ISSN = {2041-1723}, year = {2021}, DOI = {10.1038/s41467-021-24008-9}, URL = {https://www.documentation.ird.fr/hor/fdi:010082249}, }