Dear subscriber,
In this EFCTC July newsletter, we report on that the US NOAA (National Oceanic and Atmospheric Administration) has released its 2022 update of the AGGI (Annual Greenhouse Gas Index), which follows the evolution of the radiative forcing (ability of all greenhouse gases to trap heat) since the onset of the industrial revolution. The HFC impact in 2022 is now 1.27% of the total. The newsletter discusses the Photochemical Ozone Creation Potentials (POCPs) for ultra-low GWP refrigerants (HFOs, HCFOs and hydrocarbons). The 2022 Assessment Report of the Environmental Effects Assessment Panel provides updated POCP values for HFOs and HCFOs, based on the most recent reactivity evaluations, with similar evaluations available for hydrocarbon refrigerants. Degradation products of hydrocarbons such as propane and propene contribute to the formation of photochemical smog in the presence of other pollutants (NOx) and depending on atmospheric conditions. The newsletter also discusses the effects of atmospheric degradation products from ultra-low GWP refrigerants. The atmospheric degradation of the HFOs, HCFOs and hydrocarbons determine their indirect global warming contributions, if any. We report that Ireland’s first low-carbon district heating network located in Tallaght, Dublin, is using a heat pump system with HFO-1234ze(E) as refrigerant. Finally, we report on a side event at the Montreal Protocol 45th OEWG meeting in Bangkok:” A review of current understanding of HFC-23 emissions and contributing source processes”, which explained that HFC-23 emissions during 2016 to 2020 are substantially larger than expected given reports of mitigation. Do you want to learn more about EFCTC’s list of upcoming events relating to fluorocarbons? You can find them at the bottom of the newsletter and on the fluorocarbons.org website.
Thank you for your continued interest in EFCTC.
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