Energy from the sun reaching Earth, measured in watts per square metre (W/m²). Drives weather and climate.
basicWhat is Solar Radiation?
Solar radiation at the top of the atmosphere averages about 1,361 W/m². At the surface in tropical Southeast Asia, peak noon values reach 900-1,100 W/m² on clear days. Clouds, aerosols and haze reduce this. Solar radiation drives photosynthesis, evaporation, and the thermal circulation that creates weather patterns including monsoons.
Key points
- Energy from the sun reaching Earth, measured in watts per square metre (W/m²). Drives weather and climate.
- Category: basic
Related terms
See also: solar-radiation is connected to other weather concepts. Browse the full glossary for related definitions.