[1] Noxon J F. Nitrogen dioxide in thestratosphere and troposphere measurement by grouund-based absorption spectroscopy.Science, 1975, 189: 547～549

[2] Johnston P V, Mckenzie R L. NO2 observations at 45～s during thedecreasing phase of solar cycle 21, from 1980 to 1987. J. Geophys. Res., 1989, 94: 3473～3486

[3] Solomon S, Schmeltekopf A L, Sanders R W. On the interpretation of zenith skyabsorption measurements. J. Geophy. Res., 1987, 92: 8311～8319

[4] Kurucz R L, Furenlid I, Brault J et al. Solar Flux Atlas from 296 to 1300nm.Printed by the Office of the University Publisher, Harvard University, 1984.

[5] Jian Guo Niu et al. Opt. Rev., 1997, 4(1B): 240～245

[6] http://www.aqmd.govsmog95NO2.html

[7] Johnston H. unpublished data(1978).

[8] Harwood M H,Jones R L. J. Geophys. Res., 1994, 99(22): 955

[9] Wilson R C. Space Sci. Rev., 1984, 38: 203