Why is it in News?
→ Global study revealed urban greening can worsen heat in some cities.
→ Findings challenge assumptions on tree-based cooling strategies.
Important Points:
- Study covered 761 cities across 105 countries.
- Metric used: Temperature Regulation Capability (TRC).
- Negative TRC indicates cooling; positive indicates warming.
- Nearly one-fourth of cities experienced net warming.
- Warming mostly observed in cities with rainfall below 1,000 mm.
- Limited evapotranspiration reduces cooling in dry regions.
- Vegetation absorbs more solar radiation in arid conditions.
- Highlights need for climate-appropriate urban planning in India.