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Aerosol Increase In Hindu Kush-Himalaya-Tibetan Plateau Region

Aerosol Increase In Hindu Kush-Himalaya-Tibetan Plateau Region:

A new analysis by the Indian Space Research Organisation’s (ISRO) Physical Research Laboratory has shown that the Hindu Kush-Himalaya-Tibetan Plateau region has been witnessing an alarming increase in aerosol levels.

  • Aerosols are tiny solid or liquid particles suspended in air or as a gas.
  • Aerosols can be natural, such as fog or gas from volcanic eruptions, or artificial, such as smoke from burning fossil fuels.
  • Aerosol particles are either emitted directly to the atmosphere (primary aerosols) or produced in the atmosphere from precursor gases (secondary aerosols).
  • Aerosol particles are tiny, but numerous, and often comprise of a number of inorganic and organic substances.
  • True aerosol particles range in diameter from a few millimicrometres to about 1 micrometre (equal to 10-4 cm).
  • Particles with a diameter of less than 0.1 micrometre are sometimes referred to as Aitken nuclei.
  • Visible forms of atmospheric aerosol plumes include smoke, smog, haze and dust.
  • Aerosol particles, such as dust, play an important role in the precipitation process, providing the nuclei upon which condensation and freezing take place.
  • They affect climate by reflecting or absorbing incoming solar radiation and enhancing the brightness, and thus reflectivity, of clouds.