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Geography Optional 300+ Score Pack · Model answer

What are the important factors responsible for airmass modifications ?

  • UPSC 2021
  • Climatology

An air mass acquires its temperature, moisture and lapse rate over a source region — an extensive, uniform land or sea surface under light, divergent anticyclonic flow; airmass modification is the change in those properties once it leaves that region.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • 1. Initial Properties and Contrast with the Surface
  • 2. Nature of the Surface Traversed
  • 3. Path and Relief Along the Track
  • 4. Time, Distance and Speed
  • 5. Circulation Pattern Around the Air Mass
  • 6. Season
  • …and 1 more sections, with a conclusion

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