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Is pollution actually keeping us cool ?

  • 01-10-2007 4:33pm
    #1
    Duiske
    Registered Users, Registered Users 2 Posts: 3,087 ✭✭✭


    I have heard quite a bit recently about an issue called "Global Dimming".
    Basically, less sunlight is getting through to the Earths suface, due to pollutants either reflecting sunlight back into space, or pollutants seeding rain clouds, which also block/reflect sunlight.

    This global dimming was noticed when it was discovered than evapouration rates have been decreasing for the past number of years, due to less sunlight getting through. Despite this, global temperatures continue to rise.

    Could it be that if emissions of pollutants are reduced, more sunlight will reach the earths surface, in fact increasing temperatures rather than reducing them ?

    Maybe we have already added the final straw, and there is now no turning back ?

    Links :
    Global Dimming. (Wiki)

    Dimming the Sun


Comments

  • #2
    mike65
    Closed Accounts Posts: 88,972 ✭✭✭✭mike65


    Global dimming was really confirmed after Sept 11 2001, when for three days US airspace was empty bar military jets, those who observe this sort of thing noticed how on day 3 there was appriciably more light reaching the ground.

    I guess we are between a rock and a hard place - more cover less direct sun, but more blanket warming!

    Mike.


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