- Chris Sabine. “Ocean-Atmosphere CO2 Exchange”. NOAA Science On a Sphere, 11 Dec. 2015, https://sos.noaa.gov/catalog/datasets/ocean-atmosphere-co2-exchange/.
- Holli Riebeck. “The Ocean’s Carbon Balance”. NASA Earth Observatory, 1 July 2008, https://earthobservatory.nasa.gov/features/OceanCarbon.