Comparison of the results of inversion of the spectral aerosol extinction coefficients and angular dependences of aerosol scattering

V. N. Uzhegov; M. V. Panchenko; Vas. V. Polkin; Vik. V. Polkin; Yu. A. Pkhalagov; M. A. Sviridenkov

doi:10.1117/12.2287379

30 November 2017 Comparison of the results of inversion of the spectral aerosol extinction coefficients and angular dependences of aerosol scattering

V. N. Uzhegov, M. V. Panchenko, Vas. V. Polkin, Vik. V. Polkin, Yu. A. Pkhalagov, M. A. Sviridenkov

Author Affiliations +

Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 104663J (2017) https://doi.org/10.1117/12.2287379
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation

Abstract

An array of spectral aerosol extinction coefficients is calculated from measurements of the spectral transparency of the atmosphere on a 1 km long horizontal path in 10 regions of the wavelength range 0.5 – 4 μm. An array of angular dependences of the aerosol scattering coefficients in the angular range 1.2 – 15° is obtained by means of an aureole photometer with closed scattering volume. Measurements were carried out under conditions of smoky atmosphere. Inverse problem was solved for two empirical data arrays obtained synchronously (200 realizations) and the aerosol particle cross section size distributions were calculated. It is shown that the results of two experiments are in quite good agreement in the particle size range from 0.18 to 1.8 μm. Objective. Determination of the aerosol particle size range, in which the results of aerosol monitoring by two instrumentation complexes are most representative. Method for solving the problem. The inverse problem was solved for two empirical data arrays: a) spectral aerosol extinction coefficients β_ext(λ) in the wavelength range 0.5 – 3.9 μm; b) angular dependences of the aerosol scattering coefficients β_sct(φ) in the angular range Φ = 1.2 – 15° at the wavelength of 650 nm. The arrays β_ext(λ) and β_sct(φ) were obtained in synchronous measurements by means of two independent instrumentation complexes [1,2]. In order to obtain the aerosol particle cross-section size distribution dS/dr, the inverse problem was solved using the algorithms [3-5]. The spectral dependence of the optical constants of aerosol particles was determined from the empirical data [6, 7]. Finally, two arrays of distributions dS/dr corresponding to the initial experiments data β_ext(λ) and β_sct(φ) were calculated.

Citation Download Citation

V. N. Uzhegov, M. V. Panchenko, Vas. V. Polkin, Vik. V. Polkin, Yu. A. Pkhalagov, and M. A. Sviridenkov "Comparison of the results of inversion of the spectral aerosol extinction coefficients and angular dependences of aerosol scattering", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 104663J (30 November 2017); https://doi.org/10.1117/12.2287379

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Aerosols

Atmospheric particles

Scattering

Refractive index

Inverse problems

Photometry

Inverse optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years