Upsc geography

2022-11-04 09:33:13 ■ Incoming Shortwave Solar Radiation and the Heat Budget of the earth and the Atmosphere

#Insolation

◇ The earth receives most of its energy from the sun through shortwave solar radiation. The solar energy radiated towards the earth's surface is taken as 100 per cent or 100 units.

◇ Out of the total incoming per solar radiation entering the earth's atmosphere 35 cent is sent back to space through scattering by dust particles (6%), reflection from the clouds (27%) and from the ground surface (2%), 51 per cent is received by the earth's surface (received as direct radiation), and 14 per cent is absorbed by the atmospheric gases (ozone, oxygen etc.) and water vapour in different vertical zones of the atmosphere. ओपन / कमेंट

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2022-11-04 07:28:55 270 Topic Tests, 15000 Questions and Detailed Notes (Prelims + Mains)

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2022-11-03 17:32:26 ◇ The 51 per cent solar energy received by the earth comprises 34 per cent as direct solar radiation and 17 per cent as diffuse day light. The heat budget of the atmosphere comprises 48 per cent of solar radiation wherein 14 per cent is received through absorption of the shortwave incoming solar radiation and 34 per cent is received from the outgoing longwave terrestrial radiation.

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2022-11-03 17:32:26 ■ Incoming Shortwave Solar Radiation and the Heat Budget of the earth and the Atmosphere

#Insolation

◇ The earth receives most of its energy from the sun through shortwave solar radiation. The solar energy radiated towards the earth's surface is taken as 100 per cent or 100 units.

◇ Out of the total incoming per solar radiation entering the earth's atmosphere 35 cent is sent back to space through scattering by dust particles (6%), reflection from the clouds (27%) and from the ground surface (2%), 51 per cent is received by the earth's surface (received as direct radiation), and 14 per cent is absorbed by the atmospheric gases (ozone, oxygen etc.) and water vapour in different vertical zones of the atmosphere. ओपन / कमेंट

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2022-11-03 14:39:40 ओपन / कमेंट

2022-11-03 10:15:40 ■ HEAT BUDGET OF THE EARTH AND THE ATMOSPHERE

#Insolation

◇ The total solar radiation reaching a horizontal surface on the ground is called global radiation. It comprises the direct shortwave radiation from the sun, plus the diffuse radiation scattered by the atmosphere.

◇ On an average, there is supposed to exist heat balance between the amount of solar radiation received by the earth's surface and its atmosphere and the amount of heat lost by the outgoing terrestrial longwave radiation from the earth's surface and loss of heat from the atmosphere.

◇ The radiation from the sun towards the earth and from the earth towards the atmosphere and the space is called incoming shortwave solar radiation (radiation from the sun) and outgoing longwave terrestrial radiation (from the earth) respectively.

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2022-11-03 07:30:38 270 Topic Tests, 15000 Questions and Detailed Notes (Prelims + Mains)

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