Articles | Volume 19, issue 13
Atmos. Chem. Phys., 19, 8687–8701, 2019

Special issue: The 10th International Carbon Dioxide Conference (ICDC10)...

Atmos. Chem. Phys., 19, 8687–8701, 2019

Research article 10 Jul 2019

Research article | 10 Jul 2019

Atmospheric measurements of the terrestrial O2 : CO2 exchange ratio of a midlatitude forest

Mark O. Battle et al.

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Cited articles

Agency, U. S. E. P.: Greenhouse Gas Reporting Program, available at: (last access: 28 April 2019), 2017. a
Battle, M. and Munger, W.: Atmospheric Oxygen and Carbon Dioxide at Harvard Forest EMS Tower since 2006, Harvard Forest Data Archive, HF306, available at: (last access: 16 June 2019), 2018. a
Bergeron, O. and Strachan, I. B.: CO2 sources and sinks in urban and suburban areas of a northern mid-latitude city, Atmos. Environ., 45, 1564–1573, 2011. a, b, c
Björkman, O. and Demmig, B.: Photon yield of O2 evolution and chlorophyll flourescence characteristics at 77 K among vascular plants of diverse origins, Planta, 170, 489–504,, 1987. a
Blaine, T. W., Keeling, R. F., and Paplawsky, W. J.: An improved inlet for precisely measuring the atmospheric Ar∕N2 ratio, Atmos. Chem. Phys., 6, 1181–1184,, 2006. a
Short summary
Predictions of global warming require predictions of how much CO2 will be taken up by the oceans, how much by land plants, and how much will stay in the atmosphere. Measurements of atmospheric oxygen (O2) help with these predictions if we also know the ratio of O2 release to CO2 uptake in land plants. We have measured this ratio in a midlatitude forest and find a lower value than the one in wide use. If truly applicable, our results call for a modest adjustment in the global carbon budget.
Final-revised paper