Latitudinal gradient of atmospheric CO2 due to seasonal exchange with land biota

A full atmospheric general circulation model with optimized presentation of turbulent mixing near the ground surface used to study carbon dioxide transport revealed that the inter-hemispheric gradient of atmospheric carbon dioxide concentration created by the fossil-fuel emissions is twice as strong as that by seasonal terrestrial biota. The possibility of the presence of stronger sinks of atmospheric CO2 than believed earlier in the northern hemisphere is discussed.