This makes perfect sense, but albedo enhancement can still be useful in:
1. cooling overheating cities, improving local environment and cutting
electricity usage for a/c.
2. producing local cooling where most important, eg in the polar
regions. Just as dark particles (soot / black carbon) are
Oliver,
Pls note recent posts of papers on this list that shows urban albedo
projects can increase AC use by reflecting light into windows and onto
walls.
Please further note the study that suggests urban albedo can cause
atmospheric effects which lead to urban heat island exacerbation.
I'll
Folks,
To offset the global mean temperature response to a doubling of atmospheric
CO2 content, you need to deflect back to space about 2% of sunlight
reaching the Earth.
This is often a hard number to get your head around.
Well, it turns out that the area of the US is almost 10 million km2
