Prather, M. [P:(DE-HGF)0] ; Ehhalt, D. H. [P:(DE-Juel1)3735] ; Dentener, F. [P:(DE-HGF)0] ; Derwent, R. [P:(DE-HGF)0] ; Dlugokencky, E. [P:(DE-HGF)0] ; Holland, E. [P:(DE-HGF)0] ; Isaksen, I. [P:(DE-HGF)0] ; Katima, J. [P:(DE-HGF)0] ; Kirchhoff, V. [P:(DE-HGF)0] ; Matson, P. [P:(DE-HGF)0] ; Midgley, P. [P:(DE-HGF)0] ; Wang, M. [P:(DE-HGF)0]