Crawford, J.H., D.D. Davis, G. Chen, J. Bradshaw, S. Sandholm, Y. Kondo, J. Merrill, S. Liu, E. Browell, G. Gregory, B.E. Anderson, G.W. Sachse, J.D.W. Barrick, D.R. Blake, R. Talbot, and R. Pueschel (1997), Implications of large scale shifts in tropospheric Nox lebels in the remote tropical Pacific, J. Geophys. Res., 102.D23, 28447-28468.