Question

Of the insolation, 35% is reflected by the atmosphere; how much reaches the earth's surface?

Options

• 14%

• 51%

• 35%

• 34%

Answer 1

51%

Explanation:

Out of the total 100% insolation (incoming solar radiation):

• 35% is reflected back by clouds, dust, and the Earth’s surface (called albedo).

• 14% is absorbed by the atmosphere and clouds.

• The remaining 51% reaches and is absorbed by the Earth's surface, warming it.