January 2012
Search    

| Flashings

Flashings not ratednot ratednot ratednot ratednot rated

Be the first to comment


Controversial cool roof study is released

Researchers at Stanford University, Stanford, Calif., have authored a new study, "Effects of Urban Surfaces and White Roofs on Global and Regional Climate," which models climate response from 2005-25. The researchers say the urban heat-island effect is relatively minor in terms of any effect on global warming as a whole and light-colored, solar-reflective cool roofs may not help rein in climate change.

Mark Z. Jacobson, a professor of civil and environmental engineering at Stanford University, led the study and was assisted by Stanford University graduate student John Ten Hoeve. Jacobson says greenhouse gases and black carbon are the biggest contributors to climate change and, together, account for more than 95 percent of gross global warming since the Industrial Revolution. Jacobson also says that white solar-reflective roofs might add to, rather than lessen, global warming.

Stanford University News' announcement of the study says Jacobson's computer modeling concluded white roofs do cool urban surfaces. However, they cause a net global warming largely because they reduce cloudiness by increasing the stability of the air, thereby reducing the vertical transport of moisture...



To read the article in its entirety, please log in or register (registration is free).

Log in or register for FREE access to this article and other Professional Roofing online content.

Not a professionalroofing.net user?

Register now for free access
  • Full access to every article
  • Online Web exclusive information
  • Photo gallery
  • Breaking news
  • Online classified ads

Already a professionalroofing.net user?

Log in now

User name:

Password:

 


Login help
Click here to have your user name and password emailed to you.




Comments (0) Login to post a comment or rating
There are no comments posted.

NRCA NRCA