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.