urban wind

a turbulent wind at street level around tall structures in a city, characterized by a warming of the air by the heat output from these structures.
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American Heritage
Science Dictionary
urban wind   (ûr'bən wĭnd)  Pronunciation Key 
A strong wind generated as a result of temperature gradients near or around a group of high-rise buildings. It creates areas of intense air turbulence, especially at street level.
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