Inversion of the lidar data in investigations of the optical characteristics of weakly turbid atmosphere

Arkadii D. Ershov; Yuri S. Balin; Svetlana V. Samoilova

doi:10.1117/12.497313

28 March 2003 Inversion of the lidar data in investigations of the optical characteristics of weakly turbid atmosphere

Arkadii D. Ershov, Yuri S. Balin, Svetlana V. Samoilova

Proceedings Volume 5027, Ninth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics; (2003) https://doi.org/10.1117/12.497313
Event: Ninth Joint International symposium on Atmospheric and Ocean Optics, 2002, Tomsk, Russian Federation

Abstract

The problems, to which the single-frequency lidars are applied, can be conditionally divided in two types. The first type of problems is related to investigations of aerosol pollution: estimation of the mass concentration of industrial emissions and mapping of the spatial distribution of aerosol inhomogeneities. The principal peculiarity of this type of problems is the presence of optically dense anthropogenic aerosol cloud, that makes it possible to consider the laser sounding equation (LSE) for a single-component medium. The most outstanding and the most often used method for fogs, lies in setting a boundary value. There are a number of papers devoted to the methods for estimating the boundary value σ(z₀) under conditions of a priori uncertainty. Variability of the lidar ratio and neglecting the molecular scattering makes significantly less error in determining σ(z) in the problem of this type becuse of the greater optical density of aerosol formations. Application of the lidar to investigatioh of spatial and temporal dynamcis of natural aerosol is related to the second type of problems. The problems of interpretation of the data, as at sounding of crystal clouds, lies in inverting LSE for a two-component medium relatively to β_aer using the Fernald method. Apart from the errors related to the a priori uncertainty in setting the boundary value, setting the profile S_a is necessary here. The purpose of this paper is determination of the method for stable reconstruction of the parameters of natural aerosol under conditions of a priori uncertainty.

Citation Download Citation

Arkadii D. Ershov, Yuri S. Balin, and Svetlana V. Samoilova "Inversion of the lidar data in investigations of the optical characteristics of weakly turbid atmosphere", Proc. SPIE 5027, Ninth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics, (28 March 2003); https://doi.org/10.1117/12.497313

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KEYWORDS

LIDAR

Aerosols

Atmospheric optics

Atmospheric modeling

Atmospheric particles

Mass attenuation coefficient

Raman spectroscopy

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