A new study published in the Journal of Climate claims that painting rooftops white—a method championed by energy secretary Steven Chu and others to combat climate change—only minimally reduces local cooling, and actually causes a slight increase in overall global warming. How the Heck: The researchers used a global climate model called GATOR-GCMOM [PDF], which [...]
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White Roofs May Actually Add to Global Warming | 80beats
Started by Hayden, Oct 20 2011 05:38 AM
3 replies to this topic
#2
Posted 20 October 2011 - 09:35 AM
Very interesting report. On a wide scale basis, the benefit is miniscule, but if families want to save money on air conditioning costs, it would seem to be a good idea to paint the roof white. At least there is a saving in that respect.
#3
Posted 20 October 2011 - 10:05 AM
Oh man! Just when I was going to try to convince my building manager to paint the roof here white. It gets powerful hot here in the summer, so I admit I was also thinking of numero uno. I would try to convince him to go for solar panels, but that's probably out of the question.
#4
Posted 16 February 2013 - 04:45 AM
From the article-
"Even with switch to 100% white roofs, the predicted increase in global temperature (0.13 F over 20 years)
is quite small, and dwarfed by expected effects of greenhouse gases and carbon soot."
"Even with switch to 100% white roofs, the predicted increase in global temperature (0.13 F over 20 years)
is quite small, and dwarfed by expected effects of greenhouse gases and carbon soot."
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