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D. W. Waugh, A. M. Crotwell, E. J. Dlugokencky, G. S. Dutton, J. W. Elkins, B. D. Hall, E. J. Hintsa, D. F. Hurst, S. A. Montzka, D. J. Mondeel, F. L. Moore, J. D. Nance, E. A. Ray, S. D. Steenrod, S. E. Strahan and C. Sweeney Tropospheric SF6: Age of air from the Northern Hemisphere midlatitude surface Journal of Geophysical Research: Atmospheres 118

Article first published online: 10 OCT 2013 | DOI: 10.1002/jgrd.50848

Key Points

  • SF6 quantifies mean time since air was in NH mid-latitude surface layer
  • Surface SF6 age varies from near zero north of 30°N to 1.4 years south of 30°S
  • SF6 age is useful for evaluating tropospheric transport in models

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