What are heat islands?

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试卷: LEED GA模拟题F[查看]
What are heat islands?
A: An environmental issue that causes ozone depletion
B: Air and surface temperature differences between developed and undeveloped areas
C: Reflection of heat by high albedo surfaces
D: Surfaces with an imperviousness of 50% or more

参考答案: B

本题解释:
Notes:

Reference: LEED for Existing Buildings: Operations & Maintenance Reference Guide, Glossary
Heat islands are air and surface temperature differences between developed and undeveloped areas.

The heat island effect is created when developed areas have higher temperatures than surrounding rural areas. An urban heat island effect is caused by sunlight heating up dark colored surfaces such as roads and rooftops. Huge quantities of heat are generated in buildings that have dark rooftops and absorb heat rather than reflect it.