TNPSC Thervupettagam

Urbanization and Night Time Warming

June 2 , 2024 28 days 218 0
  • Urbanization has led to nearly 60 per cent more night-time warming in over 140 prominent Indian cities compared to non-urban areas surrounding them.
  • Urbanisation is known to be responsible for the urban heat island (UHI) effect.
  • The concrete and asphalt (used in constructing roads and pavements) surfaces store heat during the day and release it in the evening, thereby raising night-time temperatures.
  • The mean urban effect for all these cities across India was found to be 0.2 degrees Celsius per decade.
  • This leads to an estimate of 37.73 per cent of the total urban warming being linked to urbanisation.
  • Currently, 36 per cent of India's population, or about 40 crores, is urban and will double to 80 crores by 2050.

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