How much solar radiation reaches Earth's surface?

1 Answer

THe data is known as solar constant.

Explanation:

It is 1.362 kilowatts per square meter of Earth's surface.The Sun's total radiation[edit]
The angular diameter of the Earth as seen from the Sun is approximately 1/11,700 radians (about 18 arc-seconds), meaning the solid angle of the Earth as seen from the Sun is approximately 1/175,000,000 of a steradian. Thus the Sun emits about 2.2 billion times the amount of radiation that is caught by Earth, in other words about 3.86×1026 watts.[11]
Data from Wikipedia.