Keim, E.R., S.A. McKeen, R.S. Gao, S.G. Donnelly, R.C. Wamsley, L.A. DelNegro, D.W. Fahey, T.F. Hanisco, E.J. Lanzendorf, M.H. Proffitt, J.J. Margitan, E.J. Hintsa, L. Jaegle, C.R. Webster, R.D. May, D.C. Scott, R.J. Salawitch, J.C. Wilson, C.T. McElroy, E.L. Atlas, F. Frocke, and T.P. Bui (1999), NOy partitioning from measurements of nitrogenand hydrogen radicals in the upper troposphere, Geophys. Res. Lett., 26, 51-54.
