Opinion | Reckless emissions of man-made super pollutant threaten climate progress
Despite pledges to rein in hydrofluorocarbon pollutants, unreported emissions still hamper the fight against climate change
HFC-23, which is 14,700 times more climate-damaging than carbon dioxide (CO2), is a by-product of the manufacturing process for HCFC-22, a controlled substance under the Montreal Protocol. While the emissive use of HCFC-22 is being phased out due to its role in depleting the ozone layer, its use in the production of other chemical substances like Teflon is permitted.
Emissions of this climate super pollutant hit a staggering 17,300 tonnes in 2019, equivalent to more than 250 million tonnes of CO2, threatening to undo decades of climate progress. Cumulative HFC-23 emissions since the adoption of the Kigali Amendment in 2016 are almost 106,000 tonnes, equivalent to 1.56 billion tonnes of CO2.
And yet, these rogue emissions slip under the radar due to lax oversight of the fluorochemical industry. A strong response from the parties to the Montreal Protocol is urgently needed.