TNPSC Thervupettagam

Irrigation and Changing Rainfall Patterns

August 11 , 2019 1805 days 903 0
  • For the first time, researchers from IIT- Bombay have found that even a change in irrigation policy has
    • potential to shift monsoon rainfall to North Western India.
    • intensify extreme rainfall in Central India.

How it works?

  • During the month of September, agriculture lands are ‘highly irrigated’ and the crops are matured.
  • As a result, there is maximum evapotranspiration taking place, leading to highest contribution of moisture from the land to the atmosphere.
  • As a result of increased moisture, rainfall pattern and intensity has increased.
  • This study was based on land-surface model specifically taking into account Indian irrigation and agriculture system.
  • The study did not cover southern India.

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