都市のヒートアイランドに関する講義

Lecture Notes: The Urban Heat Island (UHI) Effect

1. Definition:

• Urban areas are significantly warmer than surrounding rural areas.
• Difference can be up to 5-8 degrees Celsius, especially [1].

2. Main Causes:

• Cause A: Materials used (concrete, asphalt) absorb and store heat.
• Cause B: Lack of vegetation (less evapotranspiration).
• Cause C: Waste heat from human activities (e.g., [2], industry).

3. Negative Impacts:

• Increased energy consumption (for cooling).
• Air pollution (smog formation).
• [3].

4. Mitigation Strategies:

• Green roofs and urban parks.
• Cool pavements (reflective materials).