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Unlike other greenhouse gases in the Paris Agreement, hydrofluorocarbons are included in other international negotiations. [6]In September 2016, the New York Declaration on Forests urged a global reduction in the use of HFCs. [7]
In the United States, the regulation of F-gases falls under the authority of the Environmental Protection Agency's overall attempts to combat greenhouse gases. [7] The United States has put forward a joint proposal with Mexico and the Federated States of Micronesia for a phase-down of HFCs by 2030. The American Innovation and Manufacturing Act ...
Many HFCs remain in the atmosphere for less than 15 years. Though they represent a small fraction of the current total greenhouse gases (less than one percent), their warming impact is particularly strong and, if left unchecked, HFCs could account for nearly 20 percent of climate pollution by 2050. [7] [8] [9]
HFCs do not contain chlorine, so they do not cause ozone depletion, and therefore have been replacing CFCs under the Protocol. [4] However, HFCs are powerful greenhouse gases that contribute to climate change, [5] so this amendment adds HFCs to the list of chemicals that countries promise to phase down. [6]
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 January 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...
They are, however, greenhouse gases, with a high global warming potential (GWP), comparable to that of CFCs and HCFCs. [31] [32] In 2009, a study calculated that a fast phasedown of high-GWP HFCs could potentially prevent the equivalent of up to 8.8 Gt CO 2-eq per year in emissions by 2050. [33]
Michael Hart, a 58-year-old man from San Diego, pleaded not guilty to smuggling hydrofluorocarbons, or HFCs — commonly used in air conditioning and refrigeration — and selling them for profit ...
These six greenhouse gases are: carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF 6). These greenhouse gases in the atmosphere constitute the "air pollution" that threatens both public health and welfare.