would have to reflect approximately 1.7% of incoming solar radiation before it can be converted to heat by Earth's surface. SRM stands for surface radiation modulation. Models indicate that SRM could result in several degrees of cooling within a decade. A one-time remival of all anthropogenic atmospheric CO 2 would eliminate only about half of the warming experienced at the time of the removal. This is because only about half of all anthropogenic CO 2 is currently in the atmosphere, and much of the anthropogenic CO 2 absorbed by the oceans would return to the atmosphere..