With applet found HERE, you can develop your own scenarios for future human emissions and future carbon sinks in the oceans and on the land. Run the applet to see the impact on atmospheric CO2 and global mean temperature. This applet was developed by the University of Wisconsin-Madison. http://carboncycle.aos.wisc.edu/
The Global Carbon Budget: 1960 to 2100
Project CO2 sources and sinks by dragging the green points on the left graph.
Hit Run Projection for the impact on atmospheric CO2 (right graph) and the relative fluxes (bottom graphic).