@article{fdi:010072737,
  title = {{L}arge- to submesoscale surface circulation and its implications on biogeochemical/biological horizontal distributions during the {OUTPACE} cruise (southwest {P}acific)},
  author = {{R}ousselet, {L}. and de {V}erneil, {A}. and {D}oglioli, {A}. {M}. and {P}etrenko, {A}. {A}. and {D}uhamel, {S}. and {M}aes, {C}hristophe and {B}lanke, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he patterns of the large-scale, meso- and sub-mesoscale surface circulation on biogeochemical and biological distributions are examined in the western tropical {S}outh {P}acific ({WTSP}) in the context of the {OUTPACE} cruise ({F}ebruary-{A}pril 2015). {M}ulti-disciplinary original in situ observations were achieved along a zonal transect through the {WTSP} and their analysis was coupled with satellite data. {T}he use of {L}agrangian diagnostics allows for the identification of water mass pathways, mesoscale structures, and submesoscale features such as fronts. {I}n particular, we confirmed the existence of a global wind-driven southward circulation of surface waters in the entire {WTSP}, using a new high-resolution altimetry-derived product, validated by in situ drifters, that includes cyclogeostrophy and {E}kman components with geostrophy. {T}he mesoscale activity is shown to be responsible for counter-intuitive water mass trajectories in two subregions: (i) the {C}oral {S}ea, with surface exchanges between the {N}orth {V}anuatu {J}et and the {N}orth {C}aledonian {J}et, and (ii) around 170 degrees {W}, with an eastward pathway, whereas a westward general direction dominates. {F}ronts and small-scale features, detected with finite-size {L}yapunov exponents ({FSLE}s), are correlated with 25% of surface tracer gradients, which reveals the significance of such structures in the generation of submesoscale surface gradients. {A}dditionally, two high-frequency sampling transects of biogeochemical parameters and microorganism abundances demonstrate the influence of fronts in controlling the spatial distribution of bacteria and phytoplankton, and as a consequence the microbial community structure. {A}ll circulation scales play an important role that has to be taken into account not only when analysing the data from {OUTPACE} but also, more generally, for understanding the global distribution of biogeochemical components.},
  keywords = {{PACIFIQUE} {SUD} {OUEST} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{B}iogeosciences},
  volume = {15},
  numero = {7},
  pages = {2411--2431},
  ISSN = {1726-4170},
  year = {2018},
  DOI = {10.5194/bg-15-2411-2018},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072737},
}