Despite a prohibition, the use of ozone-depleting CFCs reached a new high

The ability to deplete the ozone layer, which protects the Earth from the Sun, caused a global ban, but scientists revealed on Monday that some man-made chlorofluorocarbons have hit record levels, increasing climate-changing emissions

(Live science)

According to a study released in the journal Nature Geoscience, despite being banned under the Montreal Protocol, the five chlorofluorocarbons (CFCs) measured increased rapidly in the atmosphere from 2010 to 2020, hitting record-high levels in 2020.

It stated that the rise was most likely caused by leakage during the production of chemicals designed to replace CFCs, such as hydrofluorocarbons. (HFOs). Although they do not threaten ozone layer recovery at present levels, they add to a different threat by heating the atmosphere and other emissions.


"If you are producing greenhouse gases and ozone-depleting substances during the production of these next-generation compounds, then they do have an indirect impact on the climate and the ozone layer," said co-author Isaac Vimont of the US National Oceanic and Atmospheric Administration's Global Monitoring Laboratory. Data gaps across the country make it difficult to identify where the gases come from, and some CFCs studied have no known uses. However, "eradicating these emissions is a simple win in terms of reducing greenhouse gas emissions," according to Western.