- Declining oxygen concentration of the atmosphere
- The quantity of missing oxygen
- The location of declining oxygen concentration by hemisphere
- Volumetric data for fossil fuel emissions, deforestation, and volcanism, compared to volumes of CO2 appearing in the atmosphere
- The location of rising CO2 by hemisphere
- Changing carbon isotopic composition of the atmosphere
- The location of the declining carbon isotope measure (del C13) by hemisphere
- The steady rise of atmospheric CO2, whereas volcanic eruptions are intermittent (although slow emissions from non-eruptive events, mid-ocean ridges and rifts also occur).
Comparison to Net CO2 Emissions from the Northern Hemisphere
Representative del C13 values from volcanism:
Del C13 : -3.2
Del C13: -2 to -6.
Annual fossil fuel emissions are reported in tonnes of CO2 by CDIAC, the BP Annual Statistical Review of World Energy, and the EIA. One tonnes of CO2 (1000 kg) contains 22,722 moles of CO2.