@article{fdi:010066894, title = {{W}hat dominates sea level at the coast : a case study for the {G}ulf of {G}uinea}, author = {{M}elet, {A}. and {A}lmar, {R}afa{\¨e}l and {M}eyssignac, {B}.}, editor = {}, language = {{ENG}}, abstract = {{S}ea level variations and extreme events are a major threat for coastal zones. {T}his threat is expected to worsen with time because low-lying coastal areas are expected to become more vulnerable to flooding and land loss as sea level rises in response to climate change. {S}ea level variations in the coastal ocean result from a combination of different processes that act at different spatial and temporal scales. {I}n this study, the relative importance of processes causing coastal sea level variability at different time-scales is evaluated. {C}ontributions from the altimetry-derived sea-level (including the sea level rise due to the ocean warming and land ice loss in response to climate change), dynamical atmospheric forcing induced sea level (surges), wave-induced run-up and set-up, and astronomical tides are estimated from observational datasets and reanalyses. {A}s these processes impact the coast differently, evaluating their importance is essential for assessment of the local coastline vulnerability. {A} case study is developed in the {G}ulf of {G}uinea over the 1993-2012 period. {T}he leading contributors to sea level variability off {C}otonou differ depending on the time-scales considered. {T}he trend is largely dominated by processes included in altimetric data and to a lesser extent by swell-waves run-up. {T}he latter dominates interannual variations. {S}well-waves run-up and tides dominate subannual variability. {E}xtreme events are due to the conjunction of high tides and large swell run-up, exhibiting a clear seasonal cycle with more events in boreal summer and a trend mostly related to the trend in altimetric-derived sea-level.}, keywords = {{S}ea level ; {A}ltimetry ; {W}aves ; {C}oastal ; {C}limate variability ; {E}xtreme events ; {BENIN} ; {COTONOU} ; {GUINEE} {GOLFE}}, booktitle = {}, journal = {{O}cean {D}ynamics}, volume = {66}, numero = {5}, pages = {623--636}, ISSN = {1616-7341}, year = {2016}, DOI = {10.1007/s10236-016-0942-2}, URL = {https://www.documentation.ird.fr/hor/fdi:010066894}, }