411 REFERENCE · Wikibooks
HKDSE Geography/M7/Heat Island Effect
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Urban heat island refers to a higher mean air temperature in urban areas than rural areas.
Urban heat effect is intensified in following ways
Blanket effect from pollutants and water vapour
Man-made heat from air-conditioners and transportations
Tall and dense buildings block airflow
Less vegetation leads to little evapotranspiration