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What is the primary reason why the albedo of the Earth is roughly 30 percent?
Wiki User
∙ 13y ago
albedo
Wiki User
∙ 14y ago
Tegan Capman
Wiki User
∙ 10y agoReflected back into space by the atmosphere? That's almost zero percent.
By clouds IN the atmosphere, and by water? There's quite a lot reflected.
About 30% of the Sun's energy is reflected, by the Earth as a whole.
The atmosphere, including clouds, reflects about 22% of solar energy.
The Earth's surface reflects only about 9%.
The atmosphere is, for the most part, transparent. It absorbs some of the heat, but doesn't REFLECT any. Clouds reflect a lot, and water surfaces reflect a lot at low angles of incidence.
See "related links" below for more details. (The link is not just about the Greenhouse Effect.)
In particular, the second diagram is good.
Wiki User
∙ 6y agoClouds: 24% of incoming solar radiation is reflected by clouds,
Earth's Surface: 4% is reflected by the Earth's surface.
Scattering; 7% of incoming solar radiation is scattered back to space (by bouncing off particles in the atmosphere).
Total: 35%
Wiki User
∙ 10y agoNone. Once radiation is absorbed, you can't talk about "reflection". However, any body will emit radiation according to its temperature. On average, approximately 100% of the Sun's radiation, absorbed by Earth, is eventually emitted back into space. If this weren't so, Earth would quickly get hotter and hotter.
Wiki User
∙ 10y agoIs the question asking for a word? The word is albedo.
Wiki User
∙ 13y agoThe PRIMARY reason? Clouds. Clouds have a very high albedo, and cover about 30% of the world at any particular time.
Wiki User
∙ 14y agoalbedo
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