3 ms·
Painting roofs white seems like a good idea, and I remember seeing a study once saying it could have decently significant effect. But it does have one disadvan
by DennisP 4y ago
Painting roofs white seems like a good idea, and I remember seeing a study once saying it could have decently significant effect.
But it does have one disadvantage: if you don't like the effects, you have to paint all those roofs again. With stratospheric aerosols, if you don't like the results you just stop doing it, and they'll fall out of the atmosphere in a year or two.
- jabl 4y agoIf the lifetime of a roof is ~20-30 years, in that time we won't have 'solved' climate change, so exceedingly unlikely that you'll need to repaint it for climate reasons at least.
- DennisP 4y agoWhat I mean is bad localized effects in important areas. Painting roofs sounds completely benign, but if it's as effective as other geoengineering methods, then there's little reason to think it doesn't have the risks of other methods. (Personally I think those risks are probably worth taking, given climate tipping points.)