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Indi Ocean El Nino

  • June 28, 2020
  • Posted by: admin1
  • Category: DPN Topics
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Subject: Geography/Environment

Context:

By studying microscopic zooplankton called foraminifera, researches had published a paper which first found evidence from the past of an Indian Ocean El Nino

Concept:

Findings:

  • The report speaks about Last Glacial Maximum which existed about 19,000-21,000 years ago, in which ice-sheets covered North America and Eurasia, and sea-levels were much lower, with Adam’s Bridge exposed so that the Indian subcontinent and Sri Lanka were contiguous.
  • Researchers analysed simulations of this past climate and predicted that the ongoing climate change could reawaken an ancient climate pattern of the Indian Ocean.
  • They find phenomenon which could be similar to the El Niño phenomenon of the Pacific Ocean bringing more frequent and devastating floods and drought to several densely-populated countries around the Indian Ocean region.
  • If current warming trends continue, this new Indian Ocean El Niño could emerge as early as 2050. 
  • Indian Ocean has the capacity to harbour much larger climate variability than observed during the last few decades or a century.
  • Under present-day conditions, changes in the Indian Ocean Dipole and the El Niño–Southern Oscillation strongly affect Indian Monsoon variability from year to year.
  • If the hypothesis emerges in the near future, it will pose another source of uncertainty in rainfall prediction and will likely amplify swings in monsoon rainfall.
Environment Geography Indi Ocean El Nino
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