@article{PAR00029879,
  title = {{U}nveiling the influence of the daily oceanic (sub)mesoscale thermal feedback to the atmosphere},
  author = {{C}onejero, {C}. and {R}enault, {L}ionel and {D}esbiolles, {F}abien and {G}iordani, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}ceanic mesoscale [{O}(100) km] thermal feedback ({TFB}) can modify the marine atmospheric boundary layer through two main mechanisms: downward momentum mixing ({DMM}) and pressure adjustment ({PA}). {I}n this study, we use {ERA}5 reanalysis, with the finest spatial resolution available (roughly 25 km globally), and a set of coupled ocean-atmosphere model experiments to investigate the extent to which the spatial resolution of oceanic fine-scale structures [{O}(10)-(100) km] influences the {TFB} mechanisms on a daily time scale in the northwestern tropical {A}tlantic. {W}e show that the low-level wind magnitude response to sea surface temperature anomalies is controlled by large oceanic mesoscale structures (>100 km), whereas finer structures play a minor role. {H}owever, the {TFB} mechanisms vary considerably depending on whether the mesoscale structures are fully represented or not. {T}he {DMM} and {PA} mechanisms are diminished by about 36% and 85%, respectively, when the full range of mesoscale structures in the ocean is resolved. {T}his reduction is associated with both a stronger atmospheric frontogenesis mechanism induced by submesoscale [{O}(10) km] oceanic thermal structures and the divergence of submesoscale ocean currents, which is not the case at the large mesoscale. {T}hese processes have the potential to exert a destructive influence on the daily oceanic mesoscale {TFB} by inducing opposite low-level atmospheric vertical velocities, which is particularly enhanced in the case of the {PA} mechanism. {F}inally, our findings suggest that climate models must accurately represent fine-scale ocean thermal structures that directly influence {TFB} mechanisms and potentially affect cloud formation and precipitation patterns.},
  keywords = {{M}esoscale processes ; {F}rontogenesis/frontolysis ; {S}ea surface temperature ; {A}ir-sea interaction ; {F}eedback ; {C}oupled models},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {55},
  numero = {8},
  pages = {1009--1032},
  ISSN = {0022-3670},
  year = {2025},
  DOI = {10.1175/jpo-d-24-0247.1},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00029879},
}