Articles | Volume 12, issue 11
Biogeosciences, 12, 3513–3524, 2015

Special issue: KEOPS2: Kerguelen Ocean and Plateau Study 2

Biogeosciences, 12, 3513–3524, 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,, 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,, 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.
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.
Final-revised paper