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Increase in HFC‐134a emissions in response to the success of the Montreal Protocol
Author(s) -
FortemsCheiney A.,
Saunois M.,
Pison I.,
Chevallier F.,
Bousquet P.,
Cressot C.,
Montzka S. A.,
Fraser P. J.,
Vollmer M. K.,
Simmonds P. G.,
Young D.,
O'Doherty S.,
Weiss R. F.,
Artuso F.,
Barletta B.,
Blake D. R.,
Li S.,
Lunder C.,
Miller B. R.,
Park S.,
Prinn R.,
Saito T.,
Steele L. P.,
Yokouchi Y.
Publication year - 2015
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
eISSN - 2169-8996
pISSN - 2169-897X
DOI - 10.1002/2015jd023741
Subject(s) - montreal protocol , environmental science , greenhouse gas , latitude , ozone depletion , global warming , atmospheric sciences , chlorofluorocarbon , global warming potential , climatology , longitude , ozone layer , meteorology , ozone , climate change , geography , geology , oceanography , geodesy
The 1,1,1,2‐tetrafluoroethane (HFC‐134a), an important alternative to CFC‐12 in accordance with the Montreal Protocol on Substances that Deplete the Ozone Layer, is a high global warming potential greenhouse gas. Here we evaluate variations in global and regional HFC‐134a emissions and emission trends, from 1995 to 2010, at a relatively high spatial and temporal (3.75° in longitude × 2.5° in latitude and 8 day) resolution, using surface HFC‐134a measurements. Our results show a progressive increase of global HFC‐134a emissions from 19 ± 2 Gg/yr in 1995 to 167 ± 5 Gg/yr in 2010, with both a slowdown in developed countries and a 20%/yr increase in China since 2005. A seasonal cycle is also seen since 2002, which becomes enhanced over time, with larger values during the boreal summer.