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Volume 15, issue 8
Biogeosciences, 15, 2361–2378, 2018
https://doi.org/10.5194/bg-15-2361-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 2361–2378, 2018
https://doi.org/10.5194/bg-15-2361-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 19 Apr 2018

Research article | 19 Apr 2018

Interannual drivers of the seasonal cycle of CO2 in the Southern Ocean

Luke Gregor et al.

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Cited articles

Abernathey, R., Marshall, J. C., and Ferreira, D.: The Dependence of Southern Ocean Meridional Overturning on Wind Stress, J. Phys. Oeanogr., 41, 2261–2278, https://doi.org/10.1175/JPO-D-11-023.1, 2011.
Arrigo, K. R., van Dijken, G. L., and Bushinsky, S.: Primary production in the Southern Ocean, 1997–2006, J. Geophys. Res., 113, 1–27, https://doi.org/10.1029/2007JC004551, 2008.
Atlas, R., Hoffman, R. N., Ardizzone, J., Leidner, S. M., Jusem, J. C., Smith, D. K., and Gombos, D.: A Cross-calibrated, Multiplatform Ocean Surface Wind Velocity Product for Meteorological and Oceanographic Applications, B. Am. Meteorol. Soc., 92, 157–174, https://doi.org/10.1175/2010BAMS2946.1, 2011.
Bakker, D. C. E., Hoppema, M., Schröder, M., Geibert, W., and de Baar, H. J. W.: A rapid transition from ice covered CO2-rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre, Biogeosciences, 5, 1373–1386, https://doi.org/10.5194/bg-5-1373-2008, 2008.
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The Southern Ocean accounts for a large portion of the variability in oceanic CO2 uptake. However, the drivers of these changes are not understood due to a lack of observations. In this study, we used an ensemble of gap-filling methods to estimate surface CO2. We found that winter was a more important driver of longer-term variability driven by changes in wind stress. Summer variability of CO2 was driven primarily by increases in primary production.
The Southern Ocean accounts for a large portion of the variability in oceanic CO2 uptake....
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