Bring out the causes for the formation of heat islands in the urban habitat of the world. [100 Words] [5 Marks] [2013]

  • Concrete & Asphalt Surfaces: Absorb and retain more heat than natural land covers.
  • Lack of Vegetation: Reduces evapotranspiration and natural cooling effect.
  • High Building Density: Traps heat and reduces air circulation (canyon effect).
  • Air Conditioning & Vehicles: Release waste heat into the environment.
  • Industrial Activities: Emit heat and pollutants, raising local temperatures.
  • Dark Roofs & Paved Roads: Have low albedo, increasing heat absorption.
  • Water Bodies Displacement: Replaces cooling surfaces with heat-absorbing infrastructure.

Result: Urban areas are significantly warmer than surrounding rural regions.