Which one of the following is related to global dimming? 

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CDS General Knowledge 21 April 2024 Official Paper
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  1. Fall of atmospheric pressure due to increased particulates
  2. Raise of atmospheric pressure due to increased particulates
  3. Raise of temperature due to increased particulates
  4. Fall of temperature due to increased particulates

Answer (Detailed Solution Below)

Option 4 : Fall of temperature due to increased particulates
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The correct answer is Fall of temperature due to increased particulates.

Key Points

  • Global dimming is a phenomenon characterized by a decrease in the amount of solar radiation reaching the Earth's surface, which has been observed since the mid-20th century.
  • This dimming effect is largely attributed to increased particulates in the atmosphere, which include pollutants like sulfates, soot, and other aerosols.
  • These particulates increase the Earth's albedo, or the reflectivity of the Earth's surface and atmosphere, causing more of the Sun's energy to be reflected back into space rather than warming the Earth.
  • As a result, global dimming can lead to a fall in temperature on Earth, counteracting some of the effects of global warming to an extent.
  • It also has impacts on climate patterns, possibly leading to altered precipitation patterns and reduced evaporation, affecting water resources and agricultural productivity.
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