Impact of urbanization on US surface climate, Lahouari Bounoua, Ping Zhang, Georgy Mostovoy, Kurtis Thome, Jeffrey Masek, Marc Imhoff, Marshall Shepherd, Dale Quattrochi, Joseph Santanello, Julie Silva

#Benefits of green #NASA #trees

NASA’s scientists don’t spend all of their time gazing up at the stars, and one of the agency’s latest studies┬áto date concerns the essential role that foliage plays in keeping our cities cool. Trees and plants not only offer somewhere to sit in the shade on a sunny day, they affect the overall temperature of a city at its surface, which is something to think about the next time you’re considering moving neighbourhoods.

This is partly due to a process called evapotranspiration: trees release water vapour in a similar way to humans releasing sweat, through the stomata (or pores) of their leaves and stems. This is a well-known process, but the NASA study takes this further to examine how it might affect the urban temperature compared with the environment that surrounds it.

The whole study can be found here