NASA_SLC_Urban_Heat_Island_Effect_Roof.jpg - Wikipedia

Summary

Description	English: Images of Salt Lake City, Utah, show positive correlation between white reflective roofs and cooler temperatures. Image A depicts an aerial view of Salt Lake City, Utah, site of 865,000-square-foot (80,400 m ² ) white reflective roof. Image B is a thermal infrared image of same area, showing hot (red and yellow) and cool (green and blue) spots. The reflective vinyl roof, not absorbing solar radiation, is shown in blue surrounded by other hot spots.
Date	16:16, 27 August 2010 (UTC)
Source	Taken from Cool Roofing: A Solution to National Energy and Environmental Challenges. A Self-guided presentation for AIA HSW and Sustainable Design Credit.
Author	NASA

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