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11/12/20 11:25 AM IST

Aerosols in Indo-Gangetic Plain led to increased incidents of high rainfall

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Scientists have found that aerosols like black carbon and dust, which makes the Indo-Gangetic Plain one of the most polluted regions of the world, have led to increased incidents of high rainfall events in the foothills of the Himalayan Region.

Highlights
  • The Indo-Gangetic Plainis located South and upwind of the Himalayan foothills.
  • The region is associated with high aerosol loading, much of which is black carbon and dust, and thus provides an opportunity for studying how aerosol  affects extreme rainfall events, particularly when air mass is forced from a low elevation to a higher elevation as it moves over rising terrain technically called orographic forcing.
  • A team of researchers have highlighted the crucial role of the aerosol direct radiative effect on high precipitation events over the Himalayan region.
  • The findings of the current work have been accepted for publishing in the scientific journal ‘Atmospheric Chemistry and Physics’ recently.
  • Particulate emissions can alter the physical and dynamical properties of cloud systems and, in turn, amplify rainfall events over orographic regions downwind of highly polluted urban areas.
Source: PIB

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