Scrutinizing the carbon cycle and CO2 residence time in the atmosphere

by H. Harde, May 2017 in GlobalPanetaryChange

•  We present a carbon cycle with an uptake proportional to the COconcentration.
• Temperature dependent natural emission and absorption rates are considered.
• The average residence time of CO2 in the atmosphere is found to be 4 years.
• Paleoclimatic CO2 variations and the actual CO2 growth rate are well reproduced.
• Human emissions only contribute 15 % to the CO2 increase over the Industrial Era.