Articles | Volume 16, issue 1
https://doi.org/10.5194/acp-16-365-2016
https://doi.org/10.5194/acp-16-365-2016
Research article
 | 
18 Jan 2016
Research article |  | 18 Jan 2016

Global and regional emissions estimates of 1,1-difluoroethane (HFC-152a, CH3CHF2) from in situ and air archive observations

P. G. Simmonds, M. Rigby, A. J. Manning, M. F. Lunt, S. O'Doherty, A. McCulloch, P. J. Fraser, S. Henne, M. K. Vollmer, J. Mühle, R. F. Weiss, P. K. Salameh, D. Young, S. Reimann, A. Wenger, T. Arnold, C. M. Harth, P. B. Krummel, L. P. Steele, B. L. Dunse, B. R. Miller, C. R. Lunder, O. Hermansen, N. Schmidbauer, T. Saito, Y. Yokouchi, S. Park, S. Li, B. Yao, L. X. Zhou, J. Arduini, M. Maione, R. H. J. Wang, D. Ivy, and R. G. Prinn

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Cited articles

Archibald, A. T., Witham, C. S., Ashfold, M. J., Manning, A. J., O'Doherty, S., Greally, B. R., Young, D., and Shallcross D. E.: Long-term high frequency measurements of ethane, benzene and methyl chloride at Ragged Point, Barbados: Identification of long-range transport events, Elementa: Science of the Anthropocene, 3, 000068, https://doi.org/10.12952/journal.elementa.000068, 2015.
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Barletta, B., Nissenson, P., Meinardi, S., Dabdub, D., Sherwood Rowland, F., VanCuren, R. A., Pederson, J., Diskin, G. S., and Blake, D. R.: HFC-152a and HFC-134a emission estimates and characterization of CFCs, CFC replacements, and other halogenated solvents measured during the 2008 ARCTAS campaign (CARB phase) over the South Coast Air Basin of California, Atmos. Chem. Phys., 11, 2655–2669, https://doi.org/10.5194/acp-11-2655-2011, 2011.
Brunner, D., Henne, S., Keller, C. A., Reimann, S., Vollmer, M. K., O'Doherty, S., and Maione, M.: An extended Kalman-filter for regional scale inverse emission estimation, Atmos. Chem. Phys., 12, 3455–3478, https://doi.org/10.5194/acp-12-3455-2012, 2012.
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We report regional and global emissions estimates of HFC-152a using high frequency measurements from 11 observing sites and archived air samples dating back to 1978 together with atmospheric transport models. The "bottom-up" emissions of HFC-152a reported to the UNFCCC appear to significantly underestimate those reported here from observations. This discrepancy we suggest arises from largely underestimated USA and undeclared Asian emissions.
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