Solar Radiation

May 26 • Notes • 8200 Views • 3 Comments on Solar Radiation

Let us first have an brief idea about “Radiation

Radiation:

Normally,we can say that radiation is something that is being oozes out in form of wave .
The process in which energy i.e., electromagnetic energy is emitted in the form of particles is said to be as radiation..

solar radiation

solar radiation

Solar Radiation:

  • The word “Solar Radiation” is the electromagnetic radiation which is emitted by the sun.
  • Solar Radiation drives the physical and biological cycles in reaching the earth.
  • In other words, we can say solar radiation is the electromagnetic energy emitted from the sun.
  • One of the main cause of climate change is due to solar radiation.
  • Depending upon the nature of the surface, the radiation will be absorbed, reflected or transmitted through the object. This take place when solar radiation strikes any object.

Extraterrestrial Radiation:

  • The extraterrestrial radiation is the radiation  which is incident outside the earth’s surface.
  • The extraterrestrial radiation is 1367 watts/m2.
  • Due to the change in distance between earth and sun, there is a seasonal variation in the extraterrestrial rate.

Terrestrial Solar Radiation:

  • It is the electromagnetic radiation which originates from earth and its atmosphere.
  • Terrestrial Radiation is a longer wavelength which is totally infrared.
  • When the terrestrial solar radiation reaches the earth’s surface,it is broken into two components i.e.,diffuse radiation and beam radiation.
  • Beam Radiation is the solar radiation which moves through the atmosphere in a straight line without being scattered, reflected or absorbed by particles in the air.
  • Diffuse Radiation is the solar radiation which is being scattered, reflected or absorbed by the particles while passing through the atmosphere but ultimately reaches the earth’s surface.

 Some Important Questions and Answers

Q1.What is radiation?
Ans. The process of heat transfer through the emission of electromagnetic waves which carry energy.

Q2. What do you mean by solar radiation?
Ans. The word “Solar Radiation” is the electromagnetic radiation which is emitted by the sun. Solar Radiation drives the physical and biological cycles in reaching the earth.

Q3. What is extraterrestrial solar radiation?
Ans.  The extraterrestrial radiation is the solar radiation  which is incident outside the earth’s surface. The extraterrestrial radiation is 1367 watts/m2.

Q4. What do you mean by terrestrial solar radiation?
Ans. It is the electromagnetic radiation which originates from earth and its atmosphere. Terrestrial Radiation is a longer wavelength which is totally infrared.

Q5. Write the difference between beam radiation and diffuse radiation?
Ans. Beam Radiation is the radiation which moves through the atmosphere in a straight line without being scattered, reflected or absorbed by particles in the air.
Diffuse Radiation is the solar radiation which is being scattered, reflected or absorbed by the particles while passing through the atmosphere but ultimately reaches the earth’s surface.

You can download the pdf from here:-

Some Important Questions and Answers.pdf

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3 Responses to Solar Radiation

  1. Anonymous says:
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  3. rashmi says:

    Solar. Radiation

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