@article{fdi:010084285,
  title = {{M}omentum governors of {C}alifornia undercurrent transport},
  author = {{C}hen, {R}. and {M}c{W}illiams, {J}. {C}. and {R}enault, {L}ionel},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {C}alifornia {U}ndercurrent ({CUC}) transport, with significant variability ranging from weeks to decades, has consequences for both the climate and biogeochemistry of the {C}alifornia {C}urrent system. {T}his study evaluates the governors of the {CUC} transport and its temporal variability from a momentum perspective, using a mesoscale-resolving regional model. {F}rom a 16-yr mean perspective, the along-isobath pressure gradient acts to accelerate the {CUC}, whereas eddy advection retards it. {T}he topographic form stress, which is part of the volume integrated along-isobath pressure gradient, not only acts in the direction of the time-mean {CUC}, but also greatly modulates the temporal variability of the {CUC} transport. {T}his temporal variability is also correlated with the eddy momentum advection. {T}he eddy stress plays a role in transferring both the equatorward wind stress and poleward {CUC} momentum downward. {A} theory is formulated to show that, in addition to the conventional vertical redistribution of momentum, the eddy stress can also redistribute momentum horizontally in the area where the correlation between the pressure anomaly and isopycnal fluctuations has large spatial variability.},
  keywords = {{O}cean ; {C}oastal flows ; {E}ddies ; {M}omentum ; {T}opographic effects ; {R}egional models ; {PACIFIQUE} ; {CALIFORNIE}},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {51},
  numero = {9},
  pages = {2915--2932},
  ISSN = {0022-3670},
  year = {2021},
  DOI = {10.1175/jpo-d-20-0234.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084285},
}