Question

Study the below given picture and answer the following questions.

i. What percentage of the insolation is absorbed by land and oceans?
ii. What percent of the insolation is radiated from the earth's surface?
iii. What percent of terrestrial radiation is absorbed by the atmosphere?
iv. How much insolation is absorbed by the atmosphere and clouds?​

Answer 1

Explanation:

i. Another 23% of the energy is absorbed by the water vapor, clouds, and dust in the atmosphere, where it is converted into heat. Just under half (47%) of the incoming solar radiation is absorbed by the land and ocean, and this energy heats up the Earth's surface.

ii.The amount of energy put out by the Sun is a constant. The incoming solar radiation is known as insolation. The amount of solar energy reaching the Earth is 70 percent. The surface of the Earth absorbs 51 percent of the insolation.

iii.The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface.

iv. Of the 340 watts per square meter of solar energy that falls on the Earth, 29% is reflected back into space, primarily by clouds, but also by other bright surfaces and the atmosphere itself. About 23% of incoming energy is absorbed in the atmosphere by atmospheric gases, dust, and other particles.

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