TNPSC Thervupettagam

Fourth global coral bleaching

October 24 , 2024 37 days 170 0
  • The ongoing fourth global coral bleaching (GCBE4) event began in January 2023.
  • It is now the most widespread and surpassed the coral bleaching levels of 2014-2017 by over 11 per cent.
  • This severe and intense global bleaching event has been recorded in almost half the amount of time than the previous event.
  • At least 77 per cent of global reef areas have experienced bleaching level heat stress in almost 20 months as part of GCBE4.
  • Roughly 99.9 per cent of the coral reef areas in the Atlantic Ocean have experienced bleaching-level heat stress during this event.

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