Fogaren et al. (2025): Winter mixing controls carbon sequestration by the biological pump in the subpolar North Atlantic
Kristen E. Fogaren, Hilary Ilana Palevsky, Meg F. Yoder, David Nicholson, Jose M. Cuevas and Lucy Wanzer, IN: ESS Open Archive, https://doi.org/10.22541/essoar.176460522.25112894/v1
Year-round, full water-column hydrodynamic and biogeochemical observations at the Ocean Observatories Initiative’s Irminger Sea Array provide a unique opportunity to examine drivers of ocean carbon sequestration via the biological carbon pump in a region with deep winter convection. The authors use daily-resolution oxygen and optical backscatter profiles to quantify carbon remineralization and large particles sinking throughout the water column from 2015 to 2022, during which deep winter convection ranged from 440-1430 dbar. The authors use calibrated oxygen time series to determine depth-resolved remineralization rates.