Gas transport in firn: Multiple-tracer characterisation and model intercomparison for NEEM, Northern Greenland

C. Buizert, P. Martinerie, V. V. Petrenko, J. P. Severinghaus, C. M. Trudinger, E. Witrant, J. L. Rosen, A. J. Orsi, M. Rubino, D. M. Etheridge, L. P. Steele, C. Hogan, J. C. Laube, W. T. Sturges, V. A. Levchenko, A. M. Smith, I. Levin, T. J. Conway, E. J. Dlugokencky, P. M. LangK. Kawamura, T. M. Jenk, J. W.C. White, T. Sowers, J. Schwander, T. Blunier