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Geography
Pradeep Kumar

26/09/21 11:00 AM IST

Monsoon shifts

In news

For the first time since 2010, India is poised to see three consecutive Septembers with excess rainfall.

Details
  • Experts say that this is a sign of a change in monsoon patterns though it is too early yet to demonstrably prove that is a lasting consequence of global warming.
  • As of September 24, monsoon rainfall for the month is nearly 19 cm.
  • The normal for the entire month is 17 cm, and there is still a week’s worth of rainfall to come.
  • India Meteorological Department said that September rainfall would be stronger than usual but India would still end up with only around 96% of what's normal.
  • The monsoon normally starts to withdraw by the 1st of September and completely exits by October.
  • Last year, to reflect the increasingly delayed withdrawal of the monsoon, the IMD updated the beginning of the withdrawal date to September 17th.
  • In both 2019 and 2020, the monsoon began its withdrawal in October and the same is expected this year too.
Global Warming
  • Global warming is the long-term heating of Earth’s climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere.
  • The term is frequently used interchangeably with the term climate change, though the latter refers to both human- and naturally produced warming and the effects it has on our planet.
  • It is most commonly measured as the average increase in Earth’s global surface temperature.
Source: The Hindu

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