Improving retrieval precision of NO₂ density in DOAS by accurately ascertaining low-frequency structure

Abstract

The NO₂ density error retrieved by the traditional method of differential optical absorption spectroscopy (DOAS) was analyzed. The technique for reducing the error is proposed and used to obtain the NO₂ density of Chengdu through DOAS.

Keywords

absorption structure / low-frequency structure / absorption cross-section / NO₂ density

References

[1] Noxon J F. Nitrogen dioxide in the stratosphere and troposphere measured by ground-based absorption spectroscopy. Science, 1975, 189: 547-549

[2] Hans E, Par R, Stefan S. Differential absorption optical spectroscopy system for urban atmospheric pollution monitoring. Appl Opt, 1993,32(3): 327-333

[3] Niu J G, Sakurada Y, Kuze H, Takeuchi N. Measurement of atmospheric NO₂ column density with Kitt peak solar flux atlas as a reference. Opt Rev, 1997, 4: 240-245

[4] Hofman D, Paolo B, Martine D M. Intercomparasion of UV/visible spectrometers for measurements of stratospheric NO₂ for the network for the detection of stratospheric change. Geophys Res, 1995, 100: 16765-16792

[5] Yoshii Y, Kuze H, Takeuchi N. Long-path measurement of atmospheric NO₂ with an obstruction flashlight and a charge-coupled-device spectrometer. Appl Optics, 2003, 42:4362-4368

[6] Andrew Y S C, Chan M H. Acousto-optic differential optical absorption spectroscopy for atmospheric measurement of nitrogen dioxide in Hong Kong.Appl. Spectrosc, 2004, 58(12): 29-35

[7] Falko L, Gerd H, Ulrich P. Ground-based imaging differential optical absorption spectroscopy of atmospheric gases. Appl Opt , 2004,42(24): 4711-4717

[8] Chan M H, Andrew Y S C. Measurement of atmospheric nitrogen dioxide column density by solar spectroscopy method, 2005, 5832: 283-291

[9] Zuo H Y, Gao J, Cheng J, Yang J G. Measurement of NO2 concentration in atmosphere in Chengdu by solar spectra. Spectroscopy and Spectral Analysis, 2006, 26 (7): 1356-1359

[10] Pslioglou B E, Santamouris M, Asimakopoulos D N. Predicting the broadband transmittance of the uniformly mixed gases in the atmosphere, for solar radiation models. Renew Energ, 1995, 6(1): 63-69

[11] Thomason L W, Herman B M, Schotland R M, Reagan J A. Extraterrestrial solar flux measurement limitations due to a Beer’s law assumption and uncertainty in local time. Appl Optics, 1982, 21(7): 1191-1195

[12] Solomon S. On the role of nitrogen dioxide in the absorption of solar radiation. Geophys Res, 1999, 104(D10): 12047-12052

Acknowledgements

This project was supported by the National Natural Science Foundation of China (Grant Nos. 60078020, 60478044).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg