Carbon uptake by the ocean has increased alongside rising atmospheric CO2 concentrations, but with substantial variability. This Review examines trends in ocean CO2 uptake and the internal and external factors driving its variability, finding an ocean uptake of –2.7 ± 0.3 Pg C year–1 for the period 1990 through 2019.
- Nicolas Gruber
- Dorothee C. E. Bakker
- Jens Daniel Müller