Lecture on Heat Management in Singapore

Introduction

• Weather Context: Current forecast suggests 13°C but feels much hotter due to lack of breeze.
• Purpose: Understanding different heat experiences across Singapore and solutions.

Meeting with Climate Expert

• Expert: First Singaporean elected to UN climate science body.
• Objective: Explore how various parts of Singapore experience heat differently.

Observations in Singapore

Cooler Areas

• Location: Areas with more green spaces, less concrete/asphalt (e.g., Bukit Timah).
• Features:
  • Spread-out spaces
  • Large gardens
  • Cooler temperatures due to more shade and less heat trapping.

Hotter Areas

• Location: High-density areas with more concrete (e.g., Jalan Besar, Geylang).
• Features:
  • High-rise buildings
  • Limited green spaces
  • More heat retention due to urban structures and emissions from vehicles.

Heat Vulnerability in Singapore

Mapping Vulnerability

• Heat Maps: Show areas with higher temperatures, like the eastern parts.
• Demographic Maps:
  • Elderly population concentrated in older public housing areas.
  • Areas with higher unemployment and low-income households.

Consequences of Heat

• At-Risk Populations: Elderly and low-income households more vulnerable.
• Example: Single mum Fion Lim struggles with heat due to limited resources.

Sustainable Solutions for Heat Management

Immediate Solutions for Households

• For Fion Lim's Household:
  • Decluttering for better air circulation.
  • Introduction of air coolers instead of air conditioners.
  • Use of cotton bed sheets for cooler sleep.
  • Rearranging furniture to optimize wind flow.

Community and Urban Planning

• Cool Coating Paints: Pilot in Tampines to reduce heat absorption in buildings.
• Urban Planning Tools: Using simulation tools for designing wind-friendly building arrangements.

Conclusion

• Impact: Simple measures like decluttering, using air coolers, and appropriate materials can significantly reduce heat discomfort.
• Future Steps: Broader application of urban cooling strategies and technologies to mitigate rising urban heat.