Current Affairs

Impact of Asian desert on Indian summer monsoon

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    5th Apr, 2021


A new study has shown that how the dust coming from the deserts in the West, Central, and East Asia plays a significant role in the Indian Summer Monsoon.

About Dust swarms

  • Origin: Dust swarms get lifted from the desert by the strong winds.
    • Later, it absorbs solar radiation and becomes hot.
  • Impacts: Dust swarms are known to impact monsoon, hurricanes, and even rainforests. They may cause:
    • heating of the atmosphere
    • change in air pressure
    • change in wind circulation patterns
    • influence on moisture transport
    • increased precipitation and rainfall
  • Reverse effect: The Indian Summer Monsoon can also increase the winds in West Asia to produce more dust through the reverse effect.
  • Different chemical composition: Different deserts have different chemical properties and show the varied level of solar absorption capability and different impacts on the monsoon system.

Dust and Dust storms

  • The dust is a particle having a diameter of fewer than 62.5 microns.
  • The string of deserts and semi-deserts stretching from the Atlantic coast of West Africa through the Middle East and Central Asia to the Gobi Desert is known as the ‘Dust Belt’.

Common names

  • Korea - Hwang Sa
  • Japan – Kosa
  • West Asia - Haboob