@article{fdi:010072688, title = {{I}mpacts of the mesoscale ocean-atmosphere coupling on the {P}eru-{C}hile ocean dynamics : the current-induced wind stress modulation}, author = {{O}erder, {V}. and {C}olas, {F}ran{\c{c}}ois and {E}chevin, {V}incent and {M}asson, {S}. and {L}emarie, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}he ocean dynamical responses to the surface current-wind stress interaction at the oceanic mesoscale are investigated in the {S}outh-{E}ast {P}acific using a high-resolution regional ocean-atmosphere coupled model. {T}wo simulations are compared: one includes the surface current in the wind stress computation while the other does not. {I}n the coastal region, absolute wind velocities are different between the two simulations but the wind stress remains very similar. {A}s a consequence, the mean regional oceanic circulation is almost unchanged. {O}n the contrary, the mesoscale activity is strongly reduced when taking into account the effect of the surface current on the wind stress. {T}his is caused by a weakening of the eddy kinetic energy generation near the coast by the wind work and to intensified offshore eddy damping. {W}e show that, above coherent eddies, the current-stress interaction generates eddy damping through {E}kman pumping and eddy kinetic energy dissipation through wind work. {T}his alters significantly the coherent eddy vertical structures compared with the control simulation, weakening the temperature and vorticity anomalies and increasing strongly the vertical velocity anomalies associated to eddies.}, keywords = {wind stress ; ocean-atmosphere interaction ; mesoscale eddies ; wind work ; {E}astern {B}oundary {U}pwelling {S}ystems ; {PACIFIQUE} ; {PEROU} ; {CHILI}}, booktitle = {}, journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans}, volume = {123}, numero = {2}, pages = {812--833}, ISSN = {2169-9275}, year = {2018}, DOI = {10.1002/2017jc013294}, URL = {https://www.documentation.ird.fr/hor/fdi:010072688}, }