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Recent increases in global HFC-23 emissions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Montzka, Stephen A. Kuijpers, Lambert Battle, Mark O. Aydin, M. Enver Verhulst, Kristal R. Saltzman, Eric S. Fahey, David W. |
| Copyright Year | 2009 |
| Abstract | [1] Firn-air and ambient air measurements of CHF3 (HFC23) from three excursions to Antarctica between 2001 and 2009 are used to construct a consistent Southern Hemisphere (SH) atmospheric history. The results show atmospheric mixing ratios of HFC-23 continuing to increase through 2008. Mean global emissions derived from this data for 2006–2008 are 13.5 ± 2 Gg/yr (200 ± 30 10 gCO2equivalent/yr, or MtCO2-eq./yr), 50% higher than the 8.7 ± 1 Gg/yr (130 ± 15 MtCO2-eq./yr) derived for the 1990s. HFC-23 emissions arise primarily from over-fluorination of chloroform during HCFC-22 production. The recent global emission increases are attributed to rapidly increasing HCFC-22 production in developing countries since reported HFC-23 emissions from developed countries decreased over this period. The emissions inferred here for developing countries during 2006–2008 averaged 11 ± 2 Gg/yr HFC-23 (160 ± 30 MtCO2-eq./yr) and are larger than the 6 Gg/yr of HFC-23 destroyed in United Nations Framework Convention on Climate Change Clean Development Mechanism projects during 2007 and 2008. Citation: Montzka, S. A., L. Kuijpers, M. O. Battle, M. Aydin, K. R. Verhulst, E. S. Saltzman, and D. W. Fahey (2010), Recent increases in global HFC-23 emissions, Geophys. Res. Lett., 37, L02808, doi:10.1029/2009GL041195. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://igsd.org/documents/Montzka_HFC23_Factsheet.pdf |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt3f31077f/qt3f31077f.pdf |
| Alternate Webpage(s) | http://www.bowdoin.edu/~mbattle/papers_posters_and_talks/Montzka_HFC-23_GRL_published.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Anaplastic Hemispheric Astrocytoma Chloroform Command & Conquer:Yuri's Revenge Emission - Male genitalia finding Inference Large fluoroform |
| Content Type | Text |
| Resource Type | Article |
