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Mean ages of stratospheric air derived from in situ observations of CO2, CH4,...

Andrews, A. E., K. A. Boering, B. Daube, S. C. Wofsy, M. Loewenstein, H. Jost, J. Podolske, C. R. Webster, R. L. Herman, D. C. Scott, G. Flesch, E. J. Moyer, J. W. Elkins, G. Dutton, D. Hurst, F. Moore, E. Ray, P. Romashkin, and S. Strahan (2001), Mean ages of stratospheric air derived from in situ observations of CO2, CH4, and N2O, J. Geophys. Res., 106, 32.