4 Geography · 4.1.4 Atmosphere, temperature, pressure and winds

4.1.4.3 Insolation: factors controlling its distribution

Insolation is the solar energy received at the Earth's surface; how much a place gets depends on the angle of the Sun's rays, the length of the day, the transparency of the air and the slope and aspect of the land.

  • APPSC Group 1
  • Advanced level
  • 7 min read
  • Full course

Key terms

  • insolation
  • solar radiation
  • short wave
  • solar constant
  • angle of incidence
  • length of day
  • transparency
  • aspect
  • perihelion
  • aphelion
  • scattering
  • subtropical deserts

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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