Urban Heat Islands
Beginning of paper
For more than 100 years, it has been known that two adjacent cities are
generally warmer than the surrounding areas. This region of city warmth, known
as an urban heat island, can influence the concentration of air pollution. The
urban heat island is formed when industrial and urban areas are dev ....
Middle of paper
.... The dissipation of heat
energy is slowed and even stopped by the tall building walls that do not allow
infrared radiation to escape as readily as do the relative level surfaces of the
surrounding countryside. The slow release of heat tends to keep city
temperatures higher than those of the unpaved faster cooling areas.
On clear, still nights when the heat island is pronounced, a small thermal low-
pressure area forms over the city. Sometimes a light breeze, called a country
breeze which blow ....
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Word count: 524
Page count: 2 (approximately 250 words per page)
