TNPSC Thervupettagam

Antarctic Circumpolar Current

April 2 , 2024 18 days 235 0
  • An ocean current that connects the Indian, Atlantic and Pacific oceans has been speeding up in recent decades with a warming climate.
  • A new study that looked at its speed over the last 5.3 million years has found that it responds to the global climate by picking up pace or slowing down, with far-reaching consequences.
  • The current speeding of the Antarctic Circumpolar Current (ACC) does not bode well for the stability of Antarctica’s ice sheets.
  • They are already losing mass at an average rate of about 150 billion tonnes per year, contributing to sea-level rise.
  • The ocean current circles Antarctica clockwise at about 4 kilometres per hour, carrying 165 million to 182 million cubic metres of water each second.

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