Urban canyon

Urban canyon

An urban canyon is an artifact of an urban environment similar to a natural canyon. It is caused by streets cutting through dense blocks of structures, especially skyscrapers, which causes a canyon effect. Examples of urban canyon include the Magnificent Mile in Chicago and the Canyon of Heroes in Manhattan.

Urban canyons have an impact on various local conditions:
*radio reception, particularly reception of GPS signals.
*wind speed, as moving air is channeled and accelerated
*temperature, which can be elevated 5-10 degrees F (2-4 degrees C) and contributes to the urban heat island effect
*air quality, where locally stagnant air concentrates pollutants near ground level


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