Perfluorocyclobutane (PFC-318, c-C4F8) in the global atmosphere

  title={Perfluorocyclobutane (PFC-318, c-C4F8) in the global atmosphere},
  author={J. M{\"u}hle and C. Trudinger and M. Rigby and L. Western and M. Vollmer and Sunyoung Park and A. Manning and D. Say and A. Ganesan and L. P. Steele and D. Ivy and T. Arnold and Shanlan Li and A. Stohl and C. Harth and P. Salameh and A. Mcculloch and S. O’Doherty and M. K. Park and C. Jo and D. Young and K. Stanley and P. Krummel and B. Mitrevski and O. Hermansen and C. Lunder and N. Evangeliou and B. Yao and Jooil Kim and B. Hmiel and C. Buizert and V. Petrenko and J. Arduini and M. Maione and D. Etheridge and E. Michalopoulou and M. Czerniak and J. Severinghaus and S. Reimann and P. Simmonds and P. Fraser and R. Prinn and R. Weiss},
  journal={Atmospheric Chemistry and Physics},
We reconstruct atmospheric abundances of the potent greenhouse gas c-C4F8 (perfluorocyclobutane, perfluorocarbon PFC-318) from measurements of in situ, archived, firn, and aircraft air samples with precisions of ∼ 1 %–2 % reported on the SIO-14 gravimetric calibration scale. Combined with inverse methods, we found near-zero atmospheric abundances from the early 1900s to the early 1960s, after which they rose sharply, reaching 1.66 ppt (parts per trillion dry-air mole fraction) in 2017. Global c… Expand

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