Separate retrieval of microphysical parameters in aerosol fraction from the lidar data

Svetlana Samoilova; Yury Balin; Grigory Kokhanenko; Sergei Nasonov; Ioganes Penner

doi:10.1117/12.2690727

17 October 2023 Separate retrieval of microphysical parameters in aerosol fraction from the lidar data

Svetlana Samoilova, Yury Balin, Grigory Kokhanenko, Sergei Nasonov, Ioganes Penner

Proceedings Volume 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1278039 (2023) https://doi.org/10.1117/12.2690727
Event: XXIX International Symposium "Atmospheric and Ocean Optics, Atmospheric Physics", 2023, Moscow, Russian Federation

Abstract

A procedure is proposed for determining the aerosol microphysical characteristics, the complex refractive index m = m_real + i*m_image and the bimodal size distribution function U(r) of spherical particles, based on laser sensing data at the wavelengths within 355-1064 nm. In parallel with this, the possibilities of an additional Raman scattering channel in the IR wavelength range are considered. The main attention is paid to a separate fraction-wise retrieval of m + U(r) for weakly absorbing particles, m_image < 0.015, when m^fine ≠ m^coarse holds. The algorithms are tested for a fixed value m^fine = 1.50+i*0.01 and varied values of m^coarse = 1.40+i*0.0001 or 1.60+i*0.0001. In order to include the influence of the contribution from the particles of different fractions into the total concentration, 462 empirical models of U(r) are used.

Citation Download Citation

Svetlana Samoilova, Yury Balin, Grigory Kokhanenko, Sergei Nasonov, and Ioganes Penner "Separate retrieval of microphysical parameters in aerosol fraction from the lidar data", Proc. SPIE 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1278039 (17 October 2023); https://doi.org/10.1117/12.2690727

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