Observing the Southern Ocean carbon cycle from the skies
Sara E. Mikaloff-Fletcher
Nature Geoscience, Published online: 21 April 2026; doi:10.1038/s41561-026-01964-9 The Southern Ocean is a globally significant carbon sink and carbon cycling in this region drives global biological productivity. Measurements of oxygen in the overlying atmosphere shed light on the Southern Ocean carbon cycle and improve our ability to predict how it will respond to future climate change.