Large cities often experience a heat island effect, a meteorological phenomenon in which
Densely built sidewalk can absorbsolar radiation and heat the environment by re-emitting heat. This phenomenon increases the air temperature and provokes global climate change.
The authors in a new work explored how the sidewalk canon the contrary to cool the environment. The researchers focused on so-called cool sidewalks, which reflect more solar radiation and generate less heat than conventional surfaces.
Research has shown that such sidewalks canreduce air temperatures in the cities of Boston and Phoenix to 1.7 °C and 2.1 °C, respectively. They could also reduce greenhouse gas emissions, bringing their total emissions down to 3% in Boston and 6% in Phoenix.
The authors of the new work studied three types of coolsidewalks: reflective asphalt, regular concrete and reflective concrete. Depending on the development, remoteness and density of buildings, you can determine the ideal coverage option for each area of the city.
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