IAS Gyan

Daily News Analysis


14th January, 2023 Science and Technology

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  • By analysing Antarctic ice cores, scientists have revealed the most detailed look yet at the planet's recent climactic history, including summer and winter temperatures, dating back 11,000 years to the beginning of what is known as the Holocene.

About Holocene:

    1. Greenlandian (11,700 years ago to 8,200 years ago), 
    2. Northgrippian(8,200 years ago to 4,200 years ago) and 
    3. Meghalayan(4,200 years ago to the present), as proposed by International Commission on Stratigraphy.
  • The oldest age, the Greenlandian was characterized by warming following the preceding ice age.
  • The Northgrippian Age is known for vast cooling due to a disruption in ocean circulations that was caused by the melting of glaciers.
  • The most recent age of the Holocene is the present Meghalayan, which began with the extreme drought that lasted around 200 years.