There are also several cases where the two studies» assessment of consistency with the observations of a model's seasonal variations in low cloud reflectivity differ radically. (judithcurry.com)
For starters, how about a possibility of increased cloud reflectivity? (realclimate.org)
According to theory (and computer models), seeding marine stratocumulus clouds with copious amounts of tiny sea water particles could significantly enhance cloud droplet number concentration, and thereby cloud reflectivity and longevity. (io9.gizmodo.com)