Fig. 2: Processes contributing to observed changes in atmospheric potential oxygen (ΔAPOOBS). | Nature

Fig. 2: Processes contributing to observed changes in atmospheric potential oxygen (ΔAPOOBS).

From: Quantification of ocean heat uptake from changes in atmospheric O2 and CO2 composition

Fig. 2

Industrial processes (fossil-fuel burning and cement production; ΔAPOFF) and the ocean sink for anthropogenic carbon (ΔAPOCant) remove APO from the atmosphere. The fertilization effect of anthropogenic aerosol deposition (ΔAPOAtmD)—which promotes marine photosynthesis—and the changes in solubility, biology and ocean circulation due to warming (ΔAPOClimate) release APO into the atmosphere. Our study shows that ΔAPOClimate can be used to estimate long-term changes in global ocean warming.

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