Oceanic and Atmospheric Research (OAR) - or NOAA Research - provides the research foundation for understanding the complex systems that support our planet.
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.
Lead author Luke Western, Marie Curie Research Fellow at Bristol University’s School of Chemistry, said the results underscore the value of establishing and following international agreements like the“Without the Montreal Protocol, this success would not have been possible, so it’s a resounding endorsement of multilateral commitments to combat the impacts of human-induced climate change,” said Western, who initiated this work while he was a research fellow with NOAA’sAgreed to in 1987, the...
HCFC concentrations in the atmosphere are small – measured in parts per trillion – and their contribution to warming peaked at about 1% of the warming from the sum of all long-lived greenhouse gases and 2.8% of the warming from COat trapping heat in Earth’s atmosphere that would otherwise escape into space.
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