Limiting future atmospheric carbon dioxide
Article first published online: 21 SEP 2012
Copyright 1995 by the American Geophysical Union.
Global Biogeochemical Cycles
Volume 9, Issue 1, pages 121–137, March 1995
How to Cite
1995), Limiting future atmospheric carbon dioxide, Global Biogeochem. Cycles, 9(1), 121–137, doi:10.1029/94GB01779., , and (
- Issue published online: 21 SEP 2012
- Article first published online: 21 SEP 2012
- Manuscript Accepted: 7 JUL 1994
- Manuscript Received: 1 MAR 1994
We estimate anthropogenic carbon emissions required to stabilize future atmospheric CO2 at various levels ranging from 350 ppm to 750 ppm. Over the next three centuries, uptake by the ocean and terrestrial biosphere would permit emissions to be 3 to 6 times greater than the total atmospheric increase, with each of them contributing approximately equal amounts. Owing to the nonlinear dependence of oceanic and terrestrial biospheric uptake on CO2 concentration, the uptake by these two sinks decreases substantially at higher atmospheric CO2 levels. The uptake also decreases with increased atmospheric CO2 growth rate. All the stabilization scenarios require a substantial future reduction in emissions.