Climate Statistics & Extreme Weather Tracker
Comprehensive climate trend analysis, tropical cyclone tracking, heatwave frequency models, and long-term rainfall anomalies.
+1.15°C
Above pre-industrial baseline
102%
Of Long Period Average (LPA)
+14 Days
Extended summer thermal period
Active
Monsoon trough & coastal advisories
South Asian Monsoon Dynamics & Climate Anomaly Modeling
Understanding shifting monsoon precipitation bands, sea surface temperature (SST) anomalies in the Indian Ocean, and urban heat island dynamics.
1. Indian Ocean Dipole (IOD) & El Niño-Southern Oscillation (ENSO)
The Southwest monsoon accounts for over 70% of India's annual rainfall. Meteorological tracking indicates that a Positive Indian Ocean Dipole (positive IOD) brings warmer sea-surface waters to the western Indian Ocean, enhancing rainfall activity over central and northern India. Conversely, El Niño events in the equatorial Pacific historically correlate with deficient monsoon seasons and extended dry spells.
2. Urban Heat Islands (UHI) & Thermal Distress
Rapid urbanization across metropolitan corridors like Delhi NCR, Mumbai, and Ahmedabad has amplified the Urban Heat Island effect. Asphalt surfaces and high-density concrete retain shortwave solar radiation during daytime hours, preventing nighttime radiative cooling and elevating minimum nocturnal temperatures by 3°C to 6°C above rural baselines.
Regional Climate Indicators & Rainfall Departure Matrix
Seasonal precipitation departure statistics compared to 50-year Long Period Average (LPA) baselines.
| Climate Zone | Primary Monsoon Window | Avg Annual Rainfall | 5-Yr Temp Departure | Vulnerability Level |
|---|---|---|---|---|
| North-West India (Delhi, Raj, Punjab) | July – September | 615 mm | +1.4°C | High Heatwave |
| Central India (MP, Chhattisgarh, Maha) | June – September | 975 mm | +0.9°C | Monsoon Shift |
| South Peninsular (TN, Kar, Kerala) | Oct – Dec (Northeast) | 1,120 mm | +0.6°C | Moderate Swell |
| East & NE India (Assam, WB, Odisha) | June – October | 1,430 mm | +0.7°C | Flood Risk |