Cooling: Increased cloud cover (not now in the GCM program models) reflects the incoming radiation back into space.
Warming: Decreased clouds allow more IR, visible, and UV rays to penetrate lower, get absorbed, and be re-reflected back by the (increased) water vapor still present.
19 posted on 11/13/2007 5:10:36 PM PST by Robert A Cook PE
(I can only donate monthly, but Hillary's ABBCNNBCBS continue to lie every day!)