[1] Seinfeld J H, Pandis S N. Atmospheric chemistry and physics: From air pollution to climate change[M]. New York: John Wiley and Sons, 1997.

[2] Crippa M, Ciarelli G, Piazzalunga A, et al. High secondary aerosol contribution to particulate pollution during haze events in China[J]. Nature, 2014, 514: 218-222.

[3] Hendrick F, Müller J F, Clémer K, et al. Four years of ground-based MAX-DOAS observations of HONO and NO2 in the Beijing area[J]. Atmospheric Chemistry and Physics, 2014, 14: 765-781.

[4] Castellanos P, Boersma K F, Torres O, et al. OMI tropospheric NO2 air mass factors over South America: Effects of biomass burning aerosols[J]. Atmospheric Measurement Techniques, 2015, 8: 3831-3849.

[5] Chan K L, Hartl A, Lam Y F, et al. Observations of tropospheric NO2 using ground based MAX-DOAS and OMI measurements during the Shanghai World Expo 2010[J]. Atmospheric Environment, 2015, 119: 45-58.

[6] Li X, Brauers T, Shao M, et al. MAX-DOAS measurements in southern China: Retrieval of aerosol extinctions and validation using ground-based in-situ data[J]. Atmospheric Chemistry and Physics, 2010, 10: 2079-2089.

[7] Platt U, Stutz J. Differential Optical Absorption Spectroscopy Principles and Applications[M]. Berlin: Springer, 2008.

[8] Honninger G, von Friedeburg C, Platt U. Multi axis differential optical absorption spectroscopy (MAX-DOAS)[J]. Atmospheric Chemistry and Physics, 2004, 4: 231-254.

[9] Mou F S, Luo J, Li S W, et al. Vertical profile of aerosol extinction based on the measurement of O4 of multi-elevation angles with MAX-DOAS[J]. Chinese Physics B, 2019, 28(8): 084212.

[10] Conde V, Nilsson D, Galle B, et al. A rapid deployment instrument network for temporarily monitoring volcanic SO2 emissions-a case study from Telica volcano[J]. Geoscientific Instrumentation Methods and Data Systems, 2014, 3: 127-134.

[11] Wagner T, Dix B, von Friedeburg C, et al. MAX-DOAS O4 measurements: A new technique to derive information on atmospheric aerosols-principles and information content[J]. Journal of Geophysical Research, 2004, 109: D22205.

[12] Bobrowski N, von Glasow R, Aiuppa A, et al. Reactive halogen chemistry in volcanic plumes[J]. Journal of Geophysical Research, 2007, 112(D6): D06311.

[13] Zhou Haijin, Liu Wenqing, Si Fuqi, et al. Retrieval of atmospheric NO2 vertical profile from multi-axis differential optical absorption spectroscopy[J]. Acta Optica Sinica, 2011, 31(11): 1101007 (in Chinese).

[14] Wang Yang, Li Ang, Xie Pinhua, et al. Measuring tropospheric vertical distribution and vertical column density of NO2 by multi-axis differential optical absorption spectroscopy[J]. Acta Physica Sinica, 2013, 62(20): 200705 (in Chinese).

[15] Wang Ting, Wang Pucai, Yu Huan, et al. 2014. Analysis of the characteristics of tropospheric NO2 in Xianghe based on MAX-DOAS measurement[J]. Climatic and Environmental Research, 2014, 19(1): 51-60 (in Chinese).

[16] Tian Xin, Li Ang, Xu Jin, et al. Measuring tropospheric vertical column density of SO2 by multi-axis differential optical absorption spectroscopy[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(1): 33-42 (in Chinese).

[17] Wang Y, Beirle S, Lampel J. Validation of OMI, GOME-2A and GOME-2B tropospheric NO2,SO2 and HCHO products using MAX-DOAS observations from 2011 to 2014 in Wuxi, China: investigation of the effects of priori profiles and aerosols on the satellite products[J]. Atmospheric Chemistry and Physics, 2017, 17: 5007-5033.

[18] Wang Y, Lampel J, Xie P H. Ground-based MAX-DOAS observations of tropospheric aerosols,NO2, SO2 and HCHO in Wuxi, China, from 2011 to 2014[J]. Atmospheric Chemistry and Physics, 2017, 17: 2189-2215.

[19] Martin R V, Chance K, et al. An improved retrieval of tropospheric nitrogen dioxide from GOME[J]. Journal of Geophysical Research, 2002, 107(D20): 4437-4456.

[20] Mou Fusheng, Li Ang, Xie Pinhua. Study of tropospheric NO2 VCD from August 2013 to July 2014 with ground-based MAX-DOAS in Hefei and comparison with OMI observation[J]. Spectroscopy and Spectral Analysis, 2017, 37(4): 1042-1047 (in Chinese).