Quote:Dr Evans has a theory: solar activity. What he calls “albedo modulation”, the waxing and waning of reflected radiation from the Sun, is the likely cause of global warming.
If the warming is caused by reduced albedo, how does the process reverse itself? Albedo increases typically come from the expansion of the ice sheets, or increased cloudiness. While warmer temperatures should increase cloudiness, they will also decrease the ice sheets. Will there be enough clouds created to compensate for the loss of ice-sheet albedo?
Additionally, CO² is only one greenhouse gas amongst several present in our atmosphere. Most folks don't realize that water vapor is a GHG that is even more potent than CO² -- and methane more than that. Has he accounted for that at all, especially since his albedo-based model seems to rely on the increase of a potent GHG in the atmosphere?
