What causes the heat island effect?

Answer 1

A:The urban heat island effect results from constructions in the built environment raising local temperatures above what they otherwise would be. When a temperature gauge that was formerly in a rural setting becomes surrounded by new suburbs it can provide a false long term upward trend that has nothing to do with global warming. This problem has since been recognised and an appropriate allowance must be made in each such case.

Richard Muller, a a Physics Professor and longtime sceptic of climate studies has checked the data and confirmed that climate scientists have indeed made appropriate adjustments for the heat island effect. In his written testimony to Congress, Muller says that his team studied this issue and the preliminary conclusion supports the findings of climate scientists.

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Causes of the "heat island effect" include dark surfaces--that absorb more heat from the sun--and less vegetation that would provide shade and cool the air.

Answer 2

The urban heat island effect occurs when constructions in the built environment raise local temperatures above what they otherwise would be. When a temperature gauge that was formerly in a rural setting becomes surrounded by new suburbs it can provide a false long term upward trend that has nothing to do with global warming. This problem has since been recognized and an appropriate allowance must be made in each such case.

Richard Muller, a a Physics Professor and longtime sceptic of climate studies has checked the data and confirmed that climate scientists have indeed made appropriate adjustments for the heat island effect. In his written testimony to Congress, Muller says that his team studied this issue and the preliminary conclusion supports the findings of climate scientists.

Answer 3

A heat island effect is usually found in the form of urban conurbations. Human activities, particularly the replacement of natural terrain by materials such as concrete and asphalt change the thermal absorption of the "island". It is, therefore, much warmer than its immediate surroundings.