Chennai Heat Simulator
Adjust the sliders to explore how land-use changes affect Chennai's temperature and air quality. The model applies published coefficients against the April 2026 baseline.
Illustrative, not predictive. This model uses linear regression coefficients from peer-reviewed studies. It cannot capture monsoon effects, advection, aerosol forcing, or spatial heterogeneity. See full caveats →
Month (captures monsoon)
Source: IMD climatology Chennai 1991–2020
Wind direction (advection)
Source: State PCB wind-rose + zone land-use (Chennai)
Aerosol load (AOD)
0.40 — MediumSource: Babu et al., ARFI 2013 — Indian urban AOD-forcing. Day: −0.8°C / +0.3 AOD · Night: +0.5°C / +0.3 AOD · PM2.5: +30 µg/m³ / +0.3 AOD
Zone (spatial heterogeneity)
Selecting a zone resets sliders to that zone's baseline.
Time of day (aerosol forcing)
Switches aerosol forcing sign: day = cooling (solar dimming), night = warming (IR trapping).
Historical Presets
Slider mode
Where this delta came from:
- Aerosol (day)+0.08°C
- Aerosol (night)-0.05°C
- Season/monsoon+1.90°C
- Zone offset+1.50°C
WHO guideline: 15 µg/m³ (annual mean)
Brackets show the low–high band from the coefficient ranges in peer-reviewed sources: canopy 0.06–0.12°C/pp · built-up 0.05–0.1°C/pp · water 0.3–0.8°C/km² · vehicles 3–5 µg/m³ per +10 pp.