Abstract

This paper presents a method to retrieve the particle size distribution function from the data of vertical lidar sensing. We have used 462 data models obtained at the Zvenigorod AERONET site obtained in 2011–2012. For each laser shot, we considered both fine (with particle sizes in a range from 0.05 to 0.6 μm) and coarse aerosol fractions (from 0.6 to 10 μm), with emphasize on the coarse fraction. Our suggested method is a modification of the Tikhonov method. The Tikhonov method is not optimal for coarse particles because its stabilizer does not and cannot account for the presence of the coarse mode, i.e., existence of more than one maximum of the size distribution function. The components of the matrix $W_u^{-1}$ located in quadrants II and IV are sensitive to the change of these parameters. Neglecting this fact will lead again to arbitrary estimates of the contribution of the coarse particles even for exact values on the main diagonal and the two diagonals adjacent to it. Our method allows the coarse fraction up to 2.5 μm to be determined unambiguously. For larger particles ($>2.5\mathrm{\mu m}$) we recommend using the available sets of the coefficients, but with the level of values to be determined.

© 2016 Optical Society of America

Inversion of multiwavelength Raman lidar data for retrieval of bimodal aerosol size distribution

Igor Veselovskii, Alexei Kolgotin, Vadim Griaznov, Detlef Müller, Kathleen Franke, and David N. Whiteman
Appl. Opt. 43(5) 1180-1195 (2004)

Reconstruction of the aerosol optical parameters from the data of sensing with a multifrequency Raman lidar

Svetlana V. Samoilova and Yurii S. Balin
Appl. Opt. 47(36) 6816-6831 (2008)

Particle size distribution retrieval from multiwavelength lidar signals for droplet aerosol

Anna K. Jagodnicka, Tadeusz Stacewicz, Grzegorz Karasiński, Michał Posyniak, and Szymon P. Malinowski
Appl. Opt. 48(4) B8-B16 (2009)

Bayesian assessment of uncertainty in aerosol size distributions and index of refraction retrieved from multiwavelength lidar measurements

Benjamin R. Herman, Barry Gross, Fred Moshary, and Samir Ahmed
Appl. Opt. 47(10) 1617-1627 (2008)

Simultaneous retrieval of aerosol refractive index and particle size distribution from ground-based measurements of direct and scattered solar radiation

Peter Romanov, Norman T. O’Neill, Alain Royer, and Bruce L. J. McArthur
Appl. Opt. 38(36) 7305-7320 (1999)