|Title||HFC-43-10mee atmospheric abundances and global emission estimates|
|Publication Type||Journal Article|
|Year of Publication||2014|
|Authors||Arnold T., Ivy D.J, Harth CM, Vollmer M.K, Mühle J, Salameh PK, Steele LP, Krummel PB, Wang R.HJ, Young D, Lunder C.R, Hermansen O., Rhee T.S, Kim J., Reimann S., O'Doherty S, Fraser PJ, Simmonds PG, Prinn RG, Weiss RF|
|Journal||Geophysical Research Letters|
|Type of Article||Article|
|Keywords||atmospheric abundance; climate; emissions; gases; HFC-43-10mee; in-situ measurements; lifetimes; mass; oh; radiative forcing; radicals; spectrometry; trends|
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.