中国物理B ›› 2014, Vol. 23 ›› Issue (9): 94210-094210.doi: 10.1088/1674-1056/23/9/094210

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Observation of tropospheric NO2 by airborne multi-axis differential optical absorption spectroscopy in the Pearl River Delta region, south China

徐晋a, 谢品华a, 司福祺a, 李昂a, 吴丰成a, 王杨a, 刘建国a, 刘文清a, Andreas Hartlb, Chan Ka Lokb   

  1. a Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b School of Energy and Environment, City University of Hong Kong, Hong Kong, China
  • 收稿日期:2013-12-20 修回日期:2014-03-25 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 41275037, 41275038, and 41275027).

Observation of tropospheric NO2 by airborne multi-axis differential optical absorption spectroscopy in the Pearl River Delta region, south China

Xu Jin (徐晋)a, Xie Pin-Hua (谢品华)a, Si Fu-Qi (司福祺)a, Li Ang (李昂)a, Wu Feng-Cheng (吴丰成)a, Wang Yang (王杨)a, Liu Jian-Guo (刘建国)a, Liu Wen-Qing (刘文清)a, Andreas Hartlb, Chan Ka Lokb   

  1. a Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b School of Energy and Environment, City University of Hong Kong, Hong Kong, China
  • Received:2013-12-20 Revised:2014-03-25 Online:2014-09-15 Published:2014-09-15
  • Contact: Xie Pin-Hua E-mail:phxie@aiofm.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 41275037, 41275038, and 41275027).

摘要: An airborne multi-axis differential optical absorption spectroscopic (AMAX-DOAS) instrument was developed and applied to measure tropospheric NO2 in the Pearl River Delta region in the south of China. By combining the measurements in nadir and zenith directions and analyzing the UV and visible spectral region using the DOAS method, information about tropospheric NO2 vertical columns was obtained. Strong tropospheric NO2 signals were detected when flying over heavilly polluted regions and point sources like plants. The AMAX-DOAS results were compared with ground-based MAX-DOAS observations in the southwest of Zhuhai city using the same parameters for radiative transport calculations. The difference in vertical column data between the two instruments is about 8%. Our data were also compared with those from OMI and fair agreement was obtained with a correlation coefficient R of 0.61. The difference between the two instruments can be attributed to the different spatial resolution and the temporal mismatch during the measurements.

关键词: air pollution, tropospheric NO2, airborne multi-axis differential optical absorption spectroscopy, vertical column

Abstract: An airborne multi-axis differential optical absorption spectroscopic (AMAX-DOAS) instrument was developed and applied to measure tropospheric NO2 in the Pearl River Delta region in the south of China. By combining the measurements in nadir and zenith directions and analyzing the UV and visible spectral region using the DOAS method, information about tropospheric NO2 vertical columns was obtained. Strong tropospheric NO2 signals were detected when flying over heavilly polluted regions and point sources like plants. The AMAX-DOAS results were compared with ground-based MAX-DOAS observations in the southwest of Zhuhai city using the same parameters for radiative transport calculations. The difference in vertical column data between the two instruments is about 8%. Our data were also compared with those from OMI and fair agreement was obtained with a correlation coefficient R of 0.61. The difference between the two instruments can be attributed to the different spatial resolution and the temporal mismatch during the measurements.

Key words: air pollution, tropospheric NO2, airborne multi-axis differential optical absorption spectroscopy, vertical column

中图分类号:  (Spectral absorption by atmospheric gases)

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