Carbon in/Carbon Out Carbon is stored in sinks on land and released into the atmosphere through natural cycles. Note: 1ppm=2.12 Gigatons Carbon
Atmosphere: 800 Gigatons Carbon
Plants: 600 Gigatons Oceans:40,000 Gigatons Soil: 1500 Gigatons Methane hydrates: 10,000 Gigatons
Source: USDOE, image credit; World Ocean Review
Conventional Fossil Fuels : 1,460 Gigatons