Return Signal Intensity Ratio Modulates the Impact of Background Signal on Ozone DIAL Night Time Measurement in the Troposphere

DOI: 10.4236/jemaa.2010.27059   PDF   HTML     3,793 Downloads   6,418 Views   Citations


This paper discusses the uncertainty of ozone differential absorption lidar (DIAL) measurements due to the impact of background signal. The impact of background signal on ozone concentration profiles is proportional to the background intensity and the ratio of return signal intensities at “on” and “off” wavelength ( ) (hereinafter we call it the return signal intensity ratio). Analysis suggests that an appropriate return signal intensity ratio can make the impact of background signal very small, negligible. The simulations based on the analysis coincide with the experimental results. The experimental results show that the impact of background signal is negligible at an appropriate return signal intensity ratio of 0.96 at wavelength pair (280,285 nm). In case of unknown background intensity, we can adjust the laser pulse energy levels at the two wavelengths to obtain an appropriate return signal intensity ratio on the oscilloscope to suppress the impact of background signal and ensure the accuracy of night time ozone measurements.

Share and Cite:

N. Cao, T. Fuckuchi, T. Fujii, Z. Chen and J. Huang, "Return Signal Intensity Ratio Modulates the Impact of Background Signal on Ozone DIAL Night Time Measurement in the Troposphere," Journal of Electromagnetic Analysis and Applications, Vol. 2 No. 7, 2010, pp. 450-456. doi: 10.4236/jemaa.2010.27059.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] E. V. Browell, S. Ismail and S. T. Shipley, “Ultraviolet DIAL Measurements of O3 Profiles in Regions of Spa-tially Inhomogeneous Aerosols,” Applied Optics, Vol. 24, No. 17, 1985, pp. 2827-2836.
[2] Z. Wang, H. Nakane, H. Hu and J. Zhou, “Three-Wavelength Dual Differential Absorption Lidar Method for Stratospheric Ozone Measurements in the Presence of Volcanic Aerosols,” Applied Optics, Vol. 36, No. 6, 1997, pp. 1245-1252.
[3] Y. Sasano, “Simultaneous Determination of Aerosol and Gas Distribution by DIAL Measurements,” Applied Optics, Vol. 27, No. 13, 1988, pp. 2640-2641.
[4] Y. Zhao, “Simplified Correction Techniques for Back-scatter Errors in Differential Absorption Lidar Measure-ments of Ozone,” Optical Remote Sensing of Atmosphere, Vol. 18, 1991, pp. 275-277.
[5] A. D. Attorio, F. Masci, V. Rizi, G. Visconti and E. Bo- schi, “Continuous Lidar Measurements of Stratospheric Aerosols and Ozone after the Pinatubo Eruption. Part I: DIAL Ozone Retrieval in Presence of Stratospheric Aerosol Layers,” Geophysical Research Letters, Vol. 20, No. 24, 1993, pp. 2865-2868.
[6] W. Steinbrecht and A. I. Carswell, “Correcting for Inter-ference of Mt. Pinatubo Aerosols on DIAL Measurements of Stratospheric Ozone,” In: M. P. McCormick, Ed., Proceedings of the 16th International Laser Radar Conference, Cambridge, 20-24 July 1992, pp. 27-30.
[7] V. A. Kovalev and J. L. McElroy, “Differential Absorp-tion Lidar Measurement of Vertical Ozone Profiles in the Troposphere that Contains Aerosol Layers with Strong Backscattering Gradients: A Simplified Version,” Applied Optics, Vol. 33, No. 36, 1994, pp. 8393-8395.
[8] T. Fujii, T. Fukuchi, N. W. Cao, K. Nemoto and N. Ta-keuchi, “Trace Atmospheric SO2 Measurement by Mul-tiwavelength Curve-Fitting and Wavelength-Optimized Dual Differential Absorption Lidar,” Applied Optics, Vol. 41, No. 3, 2002, pp. 524-531.
[9] A. Parayannis, G. Ancellet, J. Pelon and G. Megie, “Mul-tiwavelength Lidar for Ozone Measurements in the Tro-posphere and the Lower Stratosphere,” Applied Optics, Vol. 29, No. 4, 1990, pp. 467-476.
[10] Z. Wang, J. Zhou, H. Hu and Z. Gong, “Evaluation of Dual Differential Absorption Lidar Based on Raman- Shifted Nd: YAG or KrF Laser for Tropospheric Ozone Measurements,” Applied Physics B: Lasers and Optics, Vol. 62, No. 2, 1996, pp. 143-147.
[11] T. Fukuchi, T. Nayuki, N. W. Cao, T. Fujii and K. Nemoto, “Differential Absorption Lidar System for Simultaneous Measurement of O3 and NO2: System Development and Measurement Error Estimation,” Optical Engineering, Vol. 42, No. 1, 2003, pp. 98-104.
[12] N. W. Cao, S. Li, T. Fukuchi, T. Fujii, R. L. Collins, Z. Wang and Z. Chen, “Measurement of Tropospheric O3, SO2 and Aerosol from a Volcanic Emission Event Using New Multi-Wavelength Differential-Absorption Lidar Techniques,” Applied Physics B, Vol. 85, No. 1, 2006, pp. 163-167.
[13] N. W. Cao, T. Fujii, T. Fukuchi, N. Goto, K. Nemoto and N. Takeuchi, “Estimation of Differential Absorption Lidar Measurement Error for NO2 Profiling in the Lower Troposphere,” Optical Engineering, Vol. 41, No. 1, 2002, pp. 218-224.
[14] L. T. Molina and M. J. Molina, “Absolute Absorption cross Sections of Ozone in the 185- to 350-nm Wavelength Range,” Journal of Geophysical Research, Vol. 91, 1986, pp. 14501-14508.

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.