Editing Carbon cycle (section)

====Halocarbons====
{{See also|Halocarbons|Fluorinated gases}}

Halocarbons are less prolific compounds developed for diverse uses throughout industry; for example as [[solvent]]s and [[refrigerant]]s.  Nevertheless, the buildup of relatively small concentrations (parts per trillion) of [[chlorofluorocarbon]], [[hydrofluorocarbon]], and [[perfluorocarbon]] gases in the atmosphere is responsible for about 10% of the total direct [[radiative forcing]] from all long-lived greenhouse gases (year 2019); which includes forcing from the much larger concentrations of carbon dioxide and methane.<ref>{{Cite web |last1=Butler |first1=J. |last2=Montzka |first2=S. |year=2020 |title=The NOAA Annual Greenhouse Gas Index (AGGI) |url=https://www.esrl.noaa.gov/gmd/aggi/aggi.html |publisher=[[NOAA]] Global Monitoring Laboratory/Earth System Research Laboratories}}</ref>  Chlorofluorocarbons also cause stratospheric [[ozone depletion]]. International efforts are ongoing under the [[Montreal Protocol]] and [[Kyoto Protocol]] to control rapid growth in the industrial manufacturing and use of these environmentally potent gases. For some applications more benign alternatives such as [[hydrofluoroolefin]]s have been developed and are being gradually introduced.<ref>{{cite news |last1=Sciance |first1=Fred |date=October 29, 2013 |title=The Transition from HFC- 134a to a Low -GWP Refrigerant in Mobile Air Conditioners HFO -1234yf |work=General Motors Public Policy Center |url=https://www.epa.gov/sites/production/files/2014-09/documents/sciance.pdf |url-status=live |access-date=1 August 2018 |archive-url=https://web.archive.org/web/20151015181041/http://www2.epa.gov/sites/production/files/2014-09/documents/sciance.pdf |archive-date=2015-10-15}}</ref>