Saturday , August 13 2022

Cheap sun barrier can reduce global warming



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London: Spraying of high-soiling chemicals to slow global warming can be "remarkably cheap" and cost about $ 3.1 billion a year over a 15-year period, according to a study by American researchers.

A new way to slow climate change? Block the sun

A new way to slow climate change? Block the sun

Some researchers say that geo-engineering technology called stratospheric aerosol injection (SAI) can limit rising temperatures that cause climate change.

As far as non-existent and hypothetical, it would involve the use of large hoses, guns or specially designed aircraft to spray large amounts of sulphate particles into the upper layer of the atmosphere to act as a reflective barrier to sunlight.

Total costs for launching a hypothetical SAI initiative 15 years from now would be $ A4.8 billion, says researchers at Harvard University in a report published in the newspaper Environmental Letter, and that the average annual operating costs would be about $ 3.1 billion a year over 15 years.

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