Urban Heat Island Simulator

🏙️ Urban Heat Island

City size: 5 km Vegetation fraction: 20% Urban albedo: 0.15 Rural albedo: 0.35 Time of day: 12:00

ΔT (UHI intensity)—

Urban T—

Rural T—

Urban albedo α—

Rural albedo α—

Net radiation Q*—

Energy Balance
Q* = K↓(1−α) + L↓ − L↑ − Q_H − Q_E

Cities absorb more solar radiation due to lower albedo (α=0.1–0.2 vs rural 0.3–0.4) and release stored heat at night, creating a warm island.