[Pollster1]

The frightening thing is that this would almost certainly work, and global climate is a nonlinear system. If they can "nudge" temperatures two degrees cooler than they otherwise would have been, we could easily enter a completely new climate pattern - potentially an ice age. The indications we have suggest that an ice age gets triggered far too often for me to be willing to play with the system.

Accidental anthropogenic global warming does not scare me, but geo-engineering does, since an ice age would be unpleasant for most of us.

[smokingfrog]

This will also keep the oceans from rising </sarc>.

Painting your roof white makes more sense than this.