Quote Originally Posted by WTFchris
Wouldn't particulates absorbe the suns rays and still be in the atmosphere? What particulates are you referring to exactly? They block the sun from hitting the earth, but wouldn't they still warm the atmosphere? Warming the atmoshpere results in higher moisture content and water vapor is a green house gas itself. I haven't really studied this since meteorology class in college though.
It reflects back into space during the day.
Check out the research on global dimming:
http://en.wikipedia.org/wiki/Global_dimming
The extreme case of global dimming is called:
http://en.wikipedia.org/wiki/Nuclear_winter

The grossly oversimplified logic goes: So, the industrial revolution has led to ~30-50% more CO2 and other greenhouse gases. Why isn't it well over 100 degrees already?