Share Email Print
cover

Proceedings Paper

Retrieval of the vertical distribution of aerosol microphysical characteristics from lidar measurements in Tomsk
Author(s): S. V. Samoilova; I. E. Penner; G. P. Kokhanenko; Yu. S. Balin
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Regular lidar measurements of the vertical distribution of aerosol optical parameters are carried out in Tomsk (56°N, 85°E) since April, 2006. A method is proposed for joint determination of two aerosol microphysical characteristics: the complex refractive index m=mreal + i*mimage and the spherical-particle size distribution function U(r) from the data of the nighttime vertical lidar sensing at the wavelengths 355-1064 nm. Section 2 is devoted to the theoretical aspects of retrieving the size distribution function U(r) assuming a known complex refractive index m. It is shown that the coarse fraction cannot be retrieved unambiguously. The statistical regularization method offers an unambiguous estimation of U(r) for the mean radius up to 3 μm, and gives an admissible estimate for larger radii. When estimating U(r) and m together (section 3), the retrieved refractive index is non-linearly related to the optical coefficients and the distribution function, which leads to appearance of different, including false values of m. A simultaneous use of several functionals gives a better estimate of m due to different sets of the respective optical characteristics.

Paper Details

Date Published: 13 December 2018
PDF: 6 pages
Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1083358 (13 December 2018); doi: 10.1117/12.2504469
Show Author Affiliations
S. V. Samoilova, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
I. E. Penner, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
G. P. Kokhanenko, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Yu. S. Balin, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)


Published in SPIE Proceedings Vol. 10833:
24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Gennadii G. Matvienko; Oleg A. Romanovskii, Editor(s)

© SPIE. Terms of Use
Back to Top