What drives the seasonal variability in Southern Ocean carbon fluxes?

Alison R Gray, University of Washington, School of Oceanography, Seattle, WA, United States, Kenneth S Johnson, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, Jorge L Sarmiento, Princeton University, Atmospheric and Oceanic Sciences Program, Princeton, NJ, United States, Seth M Bushinsky, Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States and Carolina O. Dufour, McGill University, Department of Atmospheric and Oceanic Sciences, Montreal, QC, Canada