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Home » Ozone Hole

Ozone Hole

A class of ozone-depleting chemicals is declining, thanks to the Montreal Protocol

New research by a team including current and former NOAA-affiliated scientists has shown that atmospheric concentrations of a class of ozone-depleting chemicals used as refrigerants, foam blowing agents and solvents peaked in 2021 and are now beginning to decline as nations comply with restrictions called for by the Montreal Protocol. 

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