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- W2609938786 abstract "The circulation within the Southwest Pacific Ocean is today well established from a climatological point of view. The northern branch of the anticyclonic South Pacific gyre creates the South Equatorial current, a major westward current controlling the circulation in the Southwest Pacific. The complex topography as well as the barotropic instabilites cause intense mesoscale activity that is well observed with satellites but strongly undersampled with in situ observations. The ocean dynamics at mesoscale can have an important impact on the ecosystem of this oligotrophic region, and in particular on the development of species involved in the biological carbon pump. We use the in situ dataset of the OUTPACE cruise (ADCP, TSG, SVP data) coupled with specifically designed high resolution (1 / 8°) regional altimetric products produced by CLS (with support from CNES) to characterize the overall mesoscale conditions during the cruise. A preliminary comparison show that the higher resolution product summing Absolute Geostrophic currents and Ekman currents is in good agreement with in situ data. Lagrangian numerical experiments performed with this altimetric product allow us to identify the general surface circulation but also the regional origins and fates of water masses sampled during the cruise and in particular at local scale during the 3 Long-Duration stations. Our results show contrasting mesoscale regimes where simple recirculation in the gyre gives way to more complex, yet still generally westward flowing, currents." @default.
- W2609938786 created "2017-05-05" @default.
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- W2609938786 date "2017-02-26" @default.
- W2609938786 modified "2023-09-23" @default.
- W2609938786 title "Characterization of the mesoscale circulation during the OUTPACE cruise (Southwest Pacific)" @default.
- W2609938786 hasPublicationYear "2017" @default.
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