Articles | Volume 12, issue 11
Biogeosciences, 12, 3513–3524, 2015
https://doi.org/10.5194/bg-12-3513-2015

Special issue: KEOPS2: Kerguelen Ocean and Plateau Study 2

Biogeosciences, 12, 3513–3524, 2015
https://doi.org/10.5194/bg-12-3513-2015

Research article 09 Jun 2015

Research article | 09 Jun 2015

Carbon, oxygen and biological productivity in the Southern Ocean in and out the Kerguelen plume: CARIOCA drifter results

L. Merlivat et al.

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Cited articles

Blain, S., Sarthou, G., and Laan, P.: Distribution of dissolved iron during the natural iron fertilization experiment KEOPS (Kerguelen Plateau, Southern Ocean), Deep-Sea Res. Pt. II, 55, 594–605, 2008.
Borrione, I. and Schlitzer, R.: Distribution and recurrence of phytoplankton blooms around South Georgia, Southern Ocean, Biogeosciences, 10, 217–231, https://doi.org/10.5194/bg-10-217-2013, 2013.
Boutin, J. and Merlivat, L.: New in situ estimates of carbon biological production rates in the Southern Ocean from CARIOCA drifter measurements, Geophys. Res. Lett., 36, L13608, https://doi.org/10.1029/2009gl038307, 2009.
Boutin J., Merlivat L., Hénocq C., Martin N., and Sallée, J. B.: Air-sea CO2 flux variability in frontal regions of the Southern Ocean from CARIOCA drifters, Limnol. Oceanogr., 53, 2062–2079, 2008.
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Short summary
One CARIOCA buoy deployed during the KEOPS2 expedition in Oct-Nov 2011 drifted eastward in the Kerguelen plume. Surface measurements of pCO2 and O2 were collected. Close to the polar front, the surface waters are a sink for CO2 and a source for O2, with mean fluxes equal to -8mmol CO2 m-2d-1 and +38mmol O2 m-2d-1. Outside an iron-enriched filament, the fluxes are in the opposite direction. NCP values of 60-140 mmol C m-2d-1 and stoichiometric ratios, O2/C, between 1.1 and 1.4 are computed.
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