Climate models underestimate how much hotter Indian cities are compared to rural areas
GS3Economy · S&T · Environment · Security· Climate change & international agreements· Prelims + Mains·
Why in news
A study published in the Proceedings of the National Academy of Sciences revealed that current climate models may underestimate urban heat island effects in tropical and sub-tropical cities.
Background
Researchers from the University of East Anglia analyzed 104 medium-sized cities in tropical and sub-tropical regions. The study found that many of these cities experience temperatures up to 2°C higher than surrounding rural areas due to impervious surfaces and engineered drainage.
Facts for Prelims
- S&TUrban Heat Island (UHI) effect: cities becoming hotter than surrounding rural areas due to impervious surfaces and engineered drainage.
- FactStudy analyzed 104 medium-sized cities in tropical and sub-tropical regions.
- FactTemperature difference: Cities in the study were found to be up to 2°C hotter than surrounding rural areas.
- S&TCoarse resolution climate models: Models that may miss variations in land surface response to climate change.
For Mains
Q. Discuss how the urban heat island effect complicates climate change modeling and urban planning in tropical regions of India.
Dimensions to cover in your answer
- Model inaccuracy: Coarse resolution models failing to capture localized land surface responses to warming
- Urban planning conflict: Balancing engineered drainage and impervious surfaces with heat mitigation strategies
- Data gap: Need for high-resolution localized climate data to improve regional warming projections
Keywords: Urban Heat Island · Climate Modeling · Tropical Urbanization · Land Surface Response · Climate Projection
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