TNPSC Thervupettagam

Drying North East India

May 5 , 2019 1903 days 859 0
  • North East India is one of the wettest places in India.
  • But it is drying rapidly in the last 30 years.
  • Researchers from the Indian Institute of Tropical Meteorology, Pune, and Assam University studied the reason for this phenomenon.
  • They state that the decreasing monsoon rainfall is associated with natural changes in the subtropical Pacific Ocean.
Pacific decadal oscillation (PDO)
  • PDO is a pattern of fluctuations in the ocean – specifically in north Pacific basin.
  • It affects northeast Indian summer monsoon.
  • PDO is an oceanic phenomenon like EL Nino, La Nina
  • But its impact is felt on a decadal level.

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