what are its causes?
The modification of land surfaces, geometric effects, "urban canyon effect"
Urban heat island
here are several causes of an urban heat island (UHI); for example, dark surfaces absorb significantly more solar radiation, which causes urban concentrations of roads and buildings to heat more than suburban and rural areas during the day; materials commonly used in urban areas for pavement and roofs, such as concrete and asphalt, have significantly different thermal bulk properties (including heat capacity and thermal conductivity) and surface radiative properties (albedo and emissivity) than the surrounding rural areas. This causes a change in the energy budget of the urban area, often leading to higher temperatures than surrounding rural areas. Another major reason is the lack of evapotranspiration (for example, through lack of vegetation) in urban areas. The U.S. Forest Service found in 2018 that cities in the United States are losing 36 million trees each year. With a decreased amount of vegetation, cities also lose the shade and evaporative cooling effect of trees.

urbanization is the cause of urban heat island a condition that could be described as The modification of land surfaces how does this island affect the animals? For example, ant colonies in urban heat islands have an increased heat tolerance at no cost to cold tolerance, and Grey-headed flying foxes, found in Melbourne, Australia, colonized urban habitats following increase in temperatures there. does it change according to the season? Yes, the urban heat island temperature difference is not only usually larger at night than during the day, but also larger in winter than in summer. how is it associated with greenery? In recent years, researchers have discovered a strong correlation between neighborhood income and tree canopy cover. how does this canopy cover affect the heat difference? Because they reduce air temperatures and surface temperatures has any act been passed to tackle it? Yes, by implementation of policies such as the Seattle Green Factor, a multifaceted system for urban landscaping, has seen much success in the mitigation of urban heat islands what is california legislation? Assembly Bill 32 required the California Air Resources Board to create a scoping plan.
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Urban heat island [SEP] Causes
There are several causes of an urban heat island (UHI); for example, dark surfaces absorb significantly more solar radiation, which causes urban concentrations of roads and buildings to heat more than suburban and rural areas during the day; materials commonly used in urban areas for pavement and roofs, such as concrete and asphalt, have significantly different thermal bulk properties (including heat capacity and thermal conductivity) and surface radiative properties (albedo and emissivity) than the surrounding rural areas. This causes a change in the energy budget of the urban area, often leading to higher temperatures than surrounding rural areas. Another major reason is the lack of evapotranspiration (for example, through lack of vegetation) in urban areas.