Retrieval of particle size distribution of polar stratospheric clouds based on Wide-Angle Color and Polarization Analysis

Cross-Wave Profiles of Altitude and Particle Size of Noctilucent Clouds in the Case of One-Dimensional Small-Scale Gravity Wave Pattern

“…One of the most complicated problems in NLC photometry is the separation of the cloud field against the twilight sky background. The procedure was described in detail in (Ugolnikov et al, 2021), where it was applied to the analysis of polar stratospheric clouds, and used for NLC (Ugolnikov, 2021) in the same form. In those papers, the scans of the sky along the lines θ=const are separated into background and cloud ranges by statistical iterations, and then the background is approximated by a 6-degree polynomial and subtracted.…”

Characterizing atmospheric aerosols using polarimetry and shadow hiding

“…Twilight phenomena in the atmosphere have been studied by means of different techniques (see Rozenberg, 1966 for review). In particular, it has been investigated by means of polarimetry (e.g., Fesenkov, 1966;Pavlov et al, 2018;Ugolnikov et al, 2021). It is worth noting that the polarimetric response from the atmosphere during daylight is somewhat different from what emerges in twilight; nevertheless, there also is a great deal of qualitative similarity between them (Rozenberg, 1966).…”

“…Fesenkov (1966) proposed a polarimetric method to estimate the contribution of multiple scattering in the twilight atmosphere. Today, polarimetry is considered to be a powerful tool for studying the microphysics of atmospheric aerosols (e.g., Pavlov et al, 2018;Ugolnikov et al, 2021).…”

Analysis of prospects for the use of certain wavelengths and broadband sources in a lidar balloon experiment to study stratospheric aerosol for climatic observations

“…Some experiments in the field of stratospheric aerosol research include understanding the impact of stratospheric aerosols on climate and atmospheric dynamics, studying the composition and properties of polar stratospheric clouds, and tracking the dispersion of volcanic ash and other airborne particles. Many of these studies are focused on combining ground and airborne lidar measurements to achieve a better understanding of stratospheric aerosols and their behavior, as well as developing advanced data processing and analysis techniques to extract useful information from lidar data [7][8][9][10][11][12][13][14][15][16][17].…”