A hot night in the big city

This nighttime thermal image shows mixed land use in a central urban area. At the top (purple) is a cooler vegetated area while the physical properties and spatial designs of the urban region control the localized temperatures.

A photovoltaic parking canopy can provide a larger volume of shading for a parking lot-with the added benefit of increasing the parking spaces per acre in comparison to a tree-lined parking lot. Photos: ASU SMART Program

This ASTER imagery shows the top 20% of surface temperatures for the Phoenix region at about 10:30 p.m. in October 2003. Photo: NASA MARS Space Flight Facility at Arizona State University

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