| 光谱学与光谱分析 |
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| Measurement of Atmosphere NO2 Amounts and Angle Spacial Distribution Using Zenith-Light Spectra and Sky-Light Spectra |
| ZHAO Xiao-yan, YANG Jing-guo, GONG Min*, HE Jie, CAO Ting-ting, LIANG Hui-min, SUN Peng |
| Department of Physics, Sichuan University, Chengdu 610064, China |
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Abstract A novel approach to retrieving atmosphere NO2 slant column density is described, in which the sunlight scattered in the zenith direction and the skylight are used as the light sources. The slant column density of the same azimuth but different obliquities，which are between 0.5×1016 and 11×1016 molecule·cm-2,with the angle from 85° to 10°，as well as that of the same obliquity but different azimuths，which are between 1016 and 1017 molecule·cm-2,were calculated. The study indicates that the results have good correlation with real atmosphere status. The angle spatial distribution could be embodied by the difference of NO2 slant column density in different azimuths and obliquities. The reference spectrum and sample spectrum were collected with the same instrument at the same time，so the measurement accuracy has been improved. This method favored not only real-time monitoring NO2 content of space arbitrary direction，especially near the ground NO2 pollution emergencies，but also overcast and rainy areas where it is very difficult to collect good direct solar spectrum.
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Received: 2008-05-26
Accepted: 2008-08-28
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Corresponding Authors:
GONG Min
E-mail: mgong@scu.edu.cn
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[1] ZUO Hao-yi, GAO Jie, CHENG Juan, et al(左浩毅，高洁，程娟，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(7): 1356.
[2] Jian Guoniu, Sakurada Y, Kuze H. Optical Review, 1997, 4(1B): 240.
[3] Niu J, Kuze H, Takeuchi N. Advances in Atmospheric Sciences，2000，17(3)：363.
[4] Chan M H, Cheng A Y S. Proceedings of SPIE, 2005, 5832: 283.
[5] Mcmahon B B. J. Quant. Spectrosc. Radiat. Transfer，1984，32(1)：9.
[6] Bassford Matthew R, McLinden Chris A, Strong Kimberly. J. Quant. Spectrosc. Radiat. Transfer, 2001，68：657.
[7] Bassford Matthew R，Strong Kimberly. Atmosphere-Ocean，2005，43(4)：325.
[8] Dobber Marcel, Dirksen Ruud, Voors Robert. Appl. Opt.，2005, 44(14)：2846.
[9] Melo Stella M L, Farahani E, Strong K. Advances in Space Research，2004，34：786.
[10] Lonov D V, Sinyakov V P, Semenov V K. Advances in Space Research，2006，37：2254.
[11] CAO Ting-ting, LUO Shi-rong, ZHAO Xiao-yan(曹婷婷，罗时容，赵晓艳). Acta Phys. Sin.(物理学报), 2007，56(9)：5554.
[12] ZHAO Xiao-yan, GONG Min(赵晓艳，龚敏). Chinese Journal of Light Scattering(光散射学报)，2007, 19(2)：202.
[13] Meena G S, Bhosale C S, Jaolhav D B. Atmospheric Environment, 2004, 38: 3459.
[14] ZHOU Bin(周斌). Acta Phys. Sin.(物理学报), 2000, 49(12): 2057.
[15] HUANG Rong-hui(黄荣辉). Introduction to the Atmosphere(大气科学概论). Beijing：Meteorological Press(北京：气象出版社)，2005. 19.
[16] XU Xiang-de, BIAN Lin-gen, DING Guo-an, et al(徐祥德，卞林根，丁国安，等). Urban Air Environmental Monitoring Technology and Engineering Principles(城市大气环境监测工程技术与原理). Beijing：Meteorological Press(北京：气象出版社)，2003. 83.
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