Solar Radiation
Energy from the sun driving Earth's climate systems and providing energy for photosynthesis and weather.
Formula
Solar constant ≈ 1361 W/m²
Real World
The Sahara Desert receives roughly 2,500 kWh/m² of solar radiation annually, which is why Morocco built the Noor-Ouarzazate solar complex — the world's largest concentrated solar power plant — generating enough electricity for two million homes.
Exam Focus
Remember the 30-20-50 split: 30% reflected, 20% absorbed by atmosphere, 50% reaches Earth's surface.
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