HFC-43-10mee atmospheric abundances and global emission estimates
We report in situ atmospheric measurements of hydrofluorocarbon HFC-43-10mee (C5H2F10; 1,1,1,2,2,3,4,5,5,5-decafluoropentane) from seven observatories at various latitudes, together with measurements of archived air samples and recent Antarctic flask air samples. The global mean tropospheric abundan...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | https://hdl.handle.net/1983/23a7c0e2-cdeb-4df0-80d8-b1caeba88dc1 https://research-information.bris.ac.uk/en/publications/23a7c0e2-cdeb-4df0-80d8-b1caeba88dc1 https://doi.org/10.1002/2013GL059143 |
Summary: | We report in situ atmospheric measurements of hydrofluorocarbon HFC-43-10mee (C5H2F10; 1,1,1,2,2,3,4,5,5,5-decafluoropentane) from seven observatories at various latitudes, together with measurements of archived air samples and recent Antarctic flask air samples. The global mean tropospheric abundance was 0.210.05ppt (parts per trillion, dry air mole fraction) in 2012, rising from 0.040.03ppt in 2000. We combine the measurements with a model and an inverse method to estimate rising global emissionsfrom 0.430.34Ggyr(-1) in 2000 to 1.130.31Ggyr(-1) in 2012 (similar to 1.9TgCO(2)-eqyr(-1) based on a 100year global warming potential of 1660). HFC-43-10meea cleaning solvent used in the electronics industryis currently a minor contributor to global radiative forcing relative to total HFCs; however, our calculated emissions highlight a significant difference from the available reported figures and projected estimates. Key Points 2012 global tropospheric abundance of HFC-43-10mee is 0.21 ppt 2012 growth rate is 15 ppq yr(-1), and emission rate is 1.13 Gg yr(-1) CO2 equivalent emissions of 1.9 Tg yr(-1) are comparable to HFC-365mfc and HFC-236fa |
---|