Ancient Weather Prediction
- Babylonians (650 BC) used cloud patterns and astrology
- Aristotle (340 BC) wrote Meteorologica, the first systematic study of weather
- Sailors developed rules from observation: "Red sky at night, sailor's delight"
- Farmers relied on animal behaviour, plant responses, and seasonal patterns
The Scientific Revolution
| Year | Milestone |
|---|---|
| 1643 | Torricelli invents the barometer |
| 1714 | Fahrenheit creates the mercury thermometer |
| 1802 | Howard classifies cloud types |
| 1835 | Coriolis describes the effect of Earth's rotation on wind |
| 1854 | First weather forecast published (Admiral FitzRoy, UK) |
| 1904 | Bjerknes proposes weather prediction through mathematics |
The Modern Era
| Year | Milestone |
|---|---|
| 1950 | First computer weather forecast (ENIAC) |
| 1960 | TIROS-1: first weather satellite |
| 1966 | First geostationary weather satellite |
| 1975 | European Centre for Medium-Range Weather Forecasts (ECMWF) founded |
| 1990s | Doppler radar networks deployed |
| 2000s | Ensemble forecasting becomes standard |
| 2020s | AI weather models emerge (GraphCast, Pangu-Weather) |
How Modern Forecasts Are Made
- Observation: Satellites, radar, weather stations, ocean buoys, weather balloons, aircraft, and ships collect data
- Data assimilation: Observations are combined into a 3D model of the current atmosphere
- Numerical prediction: Supercomputers solve atmospheric physics equations forward in time
- Post-processing: Statistical methods correct known model biases
- Human expertise: Meteorologists interpret model output and issue forecasts
What Is Next?
AI models are now competitive with traditional physics-based models for many forecast types, running in seconds instead of hours. The future likely involves hybrid systems combining physics understanding with machine learning.
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