Question

What is urban heat island effect? Explain

09 Apr 2026
Answer :
Word Count : 497
The urban heat island effect refers to the phenomenon in which urban areas experience higher temperatures than nearby rural areas. Cities become warmer because natural land surfaces are replaced by buildings, roads, concrete structures, and other artificial materials that absorb and retain heat. As a result, densely populated towns and metropolitan regions often record temperatures several degrees higher than surrounding countryside, especially during summer and at night. This effect has become an important topic in the study of climate change because rapid urbanization is increasing the number and size of cities across the world. Though it is mainly a local environmental issue, it also contributes to higher energy use and worsens the impact of global warming on human settlements. One major cause of the urban heat island effect is the replacement of vegetation with concrete and asphalt. Natural surfaces such as soil, grass, and forests cool the air through shading and evaporation of water. In contrast, roads and buildings absorb solar radiation during the
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