TNPSC Thervupettagam

Climate Change 2021: The Physical Science Basis report

September 27 , 2021 1029 days 848 0
  • Intergovernmental Panel on Climate Change recently published this report
  • The report calls for clear climate action.
  • It illustrated the following scenarios,
    • Very low and low GHG emissions - Here, emissions decline to net zero around the middle of the century. Beyond this, emissions are net negative.
    • Intermediate GHG emissions - Emissions are double the current level by 2100.
    • High and very high emissions - Here, emissions are double the current levels by 2050.
    • The average global temperature is currently 1.09°C higher than pre-industrial levels.
    • The CO2 concentration in the atmosphere is 410 ppm as compared to 285 ppm in 1850.

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