There is also the difference in atmospheric residence time or the fact you'd have to keep increasing aerosols as CO2 increases, and at larger rates. (realclimate.org)
The reason why sulfate aerosols rather than solid particles are being considered is primarily atmospheric residence time and partly because of the experience with volcanic aerosols. (realclimate.org)
Solomon argues that «long - term temperature change remains primarily associated with total cumulative carbon emissions, owing to [their] much longer atmospheric residence time.» (e360.yale.edu)