Observed condition that urban areas tend to be warmer than surrounding rural areas.

The increased air temperatures in urban areas in contrast to cooler surrounding rural areas.

The increased air temperatures in urban areas as contrasted to the cooler surrounding rural areas.

city area that is always warmer than the surrounding area. Read more in the NG Education Encyclopedia

(Or heat island.) Closed isotherms indicating an area of the surface that is relatively warm; most commonly associated areas of human disturbance such as towns and cities. The physiographic analogy de [..]

Metropolitan area which is significantly warmer than the surrounding rural area

a bubble of heat hung over a metropolis not only by cars, industrial plants, business parks, and other such structures, but by paved areas devoid of vegetation. Cities then grow warmer than the surrounding land.

the higher temperature found over and around an urban area created by the release of solar energy from the solid fabric of the buildings, roads etc., coupled with energy released by human activity suc [..]

 Refers to the tendency for urban areas to have warmer air temperatures than the surrounding rural landscape, due to the low albedo of streets, sidewalks, parking lots, and buildings. These surfaces a [..]

The relative warmth of a city compared with surrounding rural areas, associated with changes in runoff, the concrete jungle effects on heat retention, changes in surface albedo, changes in pollution a [..]

A regional elevation in air temperature, usually gauged by the difference between urban and rural air temperatures. This website focuses on the summer afternoon urban heat island effect.

In large cities, expanses of paved surfaces, particularly asphalt, absorbs heat during day and radiates heat at night. Sparse vegetatation and paved surfaces increase rain runoff, furthering reducing cooling effects. Temperatures in the cities are usually 3-5 degrees hotter than surrounding country side.

The increased air temperatures in urban areas in contrast to cooler surrounding rural areas.

Heat generated and trapped in towns, typically persistent during the night, which shows as hot spots in thermal satellite images, for instance.

The increased air temperatures in urban areas in contrast to cooler surrounding rural areas.

the tendency for urban areas to have warmer air temperatures than the surrounding rural landscape, due to the low albedo of streets, sidewalks, parking lots, and buildings. These surfaces absorb solar [..]

The increased air temperatures in urban areas in contrast to cooler surrounding rural areas.

 A phenomenon where a city or town is noticeably warmer than the surrounding countryside due to the built structure of the settlement and the activities that take place there.