Hi Julia
Cool study !
Am attaching a New York City map showing NASA Heat Map data from 10:30 an on 14 August 2002, a historical heat wave period.
In Orange are the areas of the City that were over a 116 degrees Fahrenheit.
Most of the worst areas are industrial zones with large amounts of black asphalt and few trees.
Manhattan gets off relatively easy because of a lot of cross shading by tall buildings. There is a lot to be learnt from islamic architecture techniques for natural ventilation and cooling here, as we replan cities for increasing heat events.
A data surprise is that a lot of the "hot spots" are in parks, which one would expect to be cooler.
Some of the hottest spots in the entire city are the new synthetic astroturf parks.
Astroturf is being used as a more "sustainable" alternative than traditional grass, but can reach temperatures as high as 130 Fahrenheit on Heat Dome days. A technical report on the debate is attached.
Astroturf: what are better alternatives ?
Clearly as people consider cranking up their air conditioners (and making outside even hotter) your study will spark some useful debates about what local citizens can do to advocate for "cool" land use planning and more intelligent use of materials.
Eymund
Old fashioned community survival technique :)
1910 - Licking Blocks of Ice on a hot day
courtesy of the US Library of Congress