@article{fdi:010076663,
  title = {{O}n the implementation and consequences of the oceanic currents feedback in ocean-atmosphere coupled models},
  author = {{R}enault, {L}ionel and {L}emarie, {F}. and {A}rsouze, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {C}urrent {F}eed{B}ack ({CFB}) to the atmosphere simply represents the influence of the surface oceanic currents on near-surface wind and surface stress. {A}s the {CFB} has a significant influence on the oceanic circulation, it is crucial to implement it properly in a coupled ocean-atmosphere model. {I}n this study, we first detail the modifications to be implemented into atmospheric models to account for the {CFB}. {I}n the computation of air-sea fluxes, the relative winds, i.e., the difference between the near-surface winds and the surface oceanic currents, instead of absolute winds have to be used ({M}odification {M}1). {H}owever, because of the implicit treatment of the bottom boundary condition in most atmospheric models, the use of relative winds also involves a modification of the tridiagonal problem associated with the discretization of the vertical turbulent viscosity ({M}odification {M}2). {S}econdly, we show both analytically and using global coupled simulations that omitting {M}2 leads to a large underestimation of the surface stress curl response to the {CFB} and, subsequently, of the coupling coefficient between mesoscale surface stress curl and surface current vorticity. {A}s a consequence, the dampening of the mesoscale activity induced by the {CFB} is strongly reduced (by a minimum a factor of 2 or more). {T}he practical implementation of the {CFB} must be done carefully in the atmospheric component of a coupled model in order to avoid a large underestimation of the {CFB} effect on the oceanic circulation.},
  keywords = {{C}oupled ocean-atmosphere models ; {C}urrent feedback to the atmosphere ; {I}mplementation of the current {F}eedback in {C}oupled {M}odels ; {C}onsequences of a poor implementation ; {O}ceanic mesoscale activity},
  booktitle = {},
  journal = {{O}cean {M}odelling},
  volume = {141},
  numero = {},
  pages = {art. 101423 [6 p.]},
  ISSN = {1463-5003},
  year = {2019},
  DOI = {10.1016/j.ocemod.2019.101423},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076663},
}