Abstract：A method of retrieving NO2 in troposphere based on Multi Axis Differential Optical Absorption Spectroscopy(MAX-DOAS) was introduced. The differential slant column density (dSCD) of NO2 was evaluated by Differential Optical Absorption Spectroscopy (DOAS), removing the Fraunhofer structure and Ring effect. Combining the results of different observing directions, the tropospheric NO2 differential slant column density (ΔSCD) was evaluated, and the air mass factor (AMF) was calculated with the radiative transfer model SCIATRAN and the tropospheric NO2 vertical column density (VCD) was retrieved. To ensure the accuracy of the results, it was compared with the results of long path differential optical absorption spectroscopy (LP-DOAS), a good accordance was shown with the correlation coefficients of 0.940 27 and 0.969 24.
[1] Miller H L, Weaver A, Sanders R W, et al Tellus B, 1997, 49(5): 496. [2] Friedeburg C, Pundt I, Mettendorf K U, et al. Atmospheric Environment, 2005, 39(5): 977. [3] Hnninger G，Platt U. Atmospheric Environment, 2002, 36(15): 2481. [4] SI Fu-qi, XIE Pin-hua, LIU Jian-guo, et al(司福祺, 谢品华, 刘建国，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2008，28(10): 2417. [5] Hnninger G, von Friedeburg C, Platt U. Atmos. Chem. Phys., 2004, 4: 231. [6] Grainger J F，Ring J. Nature, 1962, 193: 762. [7] Wagner T, Chance K, Frie U, et al. Proc. of the 1st DOAS Workshop, Heidelberg, 13-14 September, 2001. 1. [8] Vandaele A C, Hermans C, Simon P C, et al. J. Quant. Spectrosc. Radiat. Transfer.，1998，59：171. [9] Greenblatt G D, Orlando J J, Burkholder J B, et al. J. Geophys. Res., 1990, 95：18577. [10] Rozanov A, Rozanov V, Burrow J D, et al. J. Quant. Spectros. Radiat. Transfer., 2001, 69: 491. [11] Wang P, Stammes P, Boersma F. Proceedings of Atmospheric Science Conference. Published on CDROM, ESRIN, Frascati Italy，2006. 72.
