5 ms·
Because it's non-negligible source of warming greenhouse gases that is completely avoidable - we have plenty of substitutes available to us with lower global wa
by dashundchen 4y ago
Because it's non-negligible source of warming greenhouse gases that is completely avoidable - we have plenty of substitutes available to us with lower global warming potential. Releasing 1 kg of CFC-13 will trap the same amount of heat as 14,000 kg of CO2.
Project Drawdown lists managing refrigerants as one of the top 10 solutions to limit warming in both 1.5 and 2C scenarios.
https://www.drawdown.org/solutions/table-of-solutions https://www.drawdown.org/solutions/table-of-solutions
https://www.drawdown.org/solutions/refrigerant-management https://www.drawdown.org/solutions/refrigerant-management
- eloff 4y agoYes, but the point is the danger from the warming contribution is less than the danger from an ozone hole, so why focus on the warming? Unless the ozone depletion is below the recovery rate.
- morsch 4y agoThe combined emissions of CFC-13, CFC-112a, CFC-113a, CFC-114a and CFC-115 increased from 1.6 ± 0.2 to 4.2 ± 0.4 ODP-Gg yr-1 (CFC-11-equivalent ozone-depleting potential) between 2010 and 2020. The anticipated impact of these emissions on stratospheric ozone recovery is small. However, ongoing emissions of the five CFCs of focus may negate some of the benefits gained under the Montreal Protocol if they continue to rise. In addition, the climate impact of the emissions of these CFCs needs to be considered, as their 2020 emissions are equivalent to 47 ± 5 TgCO2. https://www.nature.com/articles/s41561-023-01147-w https://www.nature.com/articles/s41561-023-01147-w
- eloff 4y agoThanks, that makes sense now.
- eecc 4y agoGg, Tg? Is that Giga-gram and Tera-gram? Why not kg, the SI standard unit for mass?
- heyoni 4y agoI think it is an SI unit: https://en.wikipedia.org/wiki/Orders_of_magnitude_(mass) https://en.wikipedia.org/wiki/Orders_of_magnitude_(mass)
- wcoenen 4y ago"Teragram" appeared in the original IPCC reports circa 1990, so this has been a thing for at least a gigasecond.
- Turskarama 4y agoAdding an SI prefix to an SI unit is standard practice rather than adding a bunch of trailing zeros.
- schiffern 4y ago> Is that Giga-gram and Tera-gram? Should be "gigagram" and "teragram," with no capitalization and no hyphen. See section 5.3 ("Unit Names") of the official SI Brochure.[0] [0] https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-...
- WorldMaker 4y agoThe article suggests that it is currently below the recovery rate (but only just).