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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 24, Iss. 17 — Sep. 1, 1985
  • pp: 2827–2836

Ultraviolet DIAL measurements of O3 profiles in regions of spatially inhomogeneous aerosols

Edward V. Browell, Syed Ismail, and Scott T. Shipley  »View Author Affiliations


Applied Optics, Vol. 24, Issue 17, pp. 2827-2836 (1985)
http://dx.doi.org/10.1364/AO.24.002827


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Abstract

The differential absorption lidar (DIAL) technique generally assumes that atmospheric optical scattering is the same at the two laser wavelengths used in the DIAL measurement of a gas concentration profile. Errors can arise in this approach when the wavelengths are significantly separated, and there is a range dependence in the aerosol scattering distribution. This paper discusses the errors introduced by large DIAL wavelength separations and spatial inhomogeneity of aerosols in the atmosphere. A Bernoulli solution for determining the relative distribution of aerosol backscattering in the UV region is presented, and scattering ratio boundary values for these solutions are discussed. The results of this approach are used to derive a backscatter correction to the standard DIAL analysis method. It is shown that for the worst cases of severe range dependence in aerosol backscattering, the residual errors in the corrected DIAL O3 measurements were <10 ppbv for DIAL wavelengths at 286 and 300 nm.

© 1985 Optical Society of America

History
Original Manuscript: January 12, 1985
Published: September 1, 1985

Citation
Edward V. Browell, Syed Ismail, and Scott T. Shipley, "Ultraviolet DIAL measurements of O3 profiles in regions of spatially inhomogeneous aerosols," Appl. Opt. 24, 2827-2836 (1985)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-24-17-2827


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