[1] U. Platt, D. Perner, H. W. Patz. Simultaneous measurements of atmospheric CH2O, O3 and NO2 by differential optical absorption[J]. J. Geophys. Res., 1979, 84(C10): 6329~6335
[2] U. Platt. Modern methods of the measurement of atmospheric trace gases[J]. Phys. Chem Chem Phys., 1999, 1(24): 5409~5415
[5] J. Kleffmanna, J. C. Lrzer, P et al.. Wiesen. Intercomparison of the DOAS and LOPAP techniques for the detection of nitrous acid (HONO)[J]. Atmospheric Environment, 2006, 40: 3640~3652
[7] A. W. Brewer, C. T. Mcelroy, J. B. Kerr. Nitrogen dioxide concentrations in the atmosphere[J]. Nature, 1973, 246(5429): 129~133
[8] J. F. Noxon. Nitrogen dioxide in the stratosphere and troposphere measured by ground-based absorption[J]. Science, 1975, 189(4202): 547~549
[9] S. Solomon, A. L. Schmeltekopf, R. W. Sanders. On the interpretation of zenith sky absorption measurements[J]. J. Geophys. Res., 1987, 92(D7): 8311~8319
[10] Bo Galle, Clive Oppenheimer, Andreas Geyer et al.. A miniaturised ultraviolet spectrometer for remote sensing of SO2 fuxes: a new tool for volcano surveillance[J]. J. Volcanol. Geotherm. Res., 2002, 119: 241~254
[11] Tamar Elias, A. Jeff Sutton, Clive Oppenheimer et al.. Comparison of COSPEC and two miniature ultraviolet spectrometer systems for SO2 measurements using scattered sunlight[J]. Bulletin of Volcanology, 2006, 68(4): 313~322
[12] Ang Li, Cheng Liu, Pinhua Xie et al.. Monitoring of SO2 emissions from industry by passive DOAS[C]. Proc. SPIE, 2005, 5832: 371~378
[13] J. F. Grainger, J. Ring. Anomalous Fraunhofer line profiles[J]. Nature, 1962, 193: 762
[14] D. J. Fish, R. L. Jones. Rotational Raman scattering and the Ring effect in zenith-sky spectra[J]. Geophys. Res. Lett., 1995, 22(7): 811~814