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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2020, Vol. 17, No. 3, pp. 223-230

Lidar sounding of aerosol pollution in atmosphere along the route Saint Petersburg – Voronezh Region – Belgorod Region

D.A. Samulenkov 1 , M.V. Sapunov 1 , I.N. Melnikova 2, 3 
1 Saint Petersburg State University, Saint Petersburg, Russia
2 - , Saint Petersburg, Russia
3 Russian State Hydrometeorological University, St. Petersburg, Russia
Accepted: 02.04.2020
DOI: 10.21046/2070-7401-2020-17-3-223-230
The paper presents the results of measurements performed by a mobile and stationary lidar complex from May 17 to 20, 2019. Based on the measurement results, the parameters of aerosol pollution were compared in different regions of Russia: Belgorod Region, Voronezh Region, Saint Petersburg. To monitor the meteorological situation, measurements of the wind speed and direction by Doppler lidar were made before measurements with an aerosol lidar. The coefficients of backscattering and attenuation of the lidar signal were compared to determine the upper boundary of the dust cloud in different regions, the optical data were processed to calculate the aerosol microphysical parameters, the values of the numerical and volume concentrations of aerosol particles were given, and the average radius of aerosol particles was calculated. It was noted that the highest density of the aerosol cap, with a particle concentration of about 4500 1/cm3, was noted over Saint Petersburg, in the surface layer at an altitude of 300 m. The concentration of particles gradually decreased with increasing height. The minimum concentration of aerosol particles was observed in Voronezh Region with a concentration of 2000 1/cm3 at an altitude of 300 m, remained the same to an altitude of 1200 m, and then sharply decreased. In Belgorod Region, differences in the concentration of aerosol particles were characteristic of the surface layer: at a height of 300 m at point Belgorod 1 the concentration was 1800 1/cm3, at point Belgorod 2 it was approximately two times higher — 3500 1/cm3. In both cases, there was an increase in concentration of aerosol particles at an altitude of 1400 m, point Belgorod 1 — 2900 1/cm3, point Belgorod 2 — 4000 1/cm3. That, apparently, was associated with the transfer from the south-west, where agricultural areas are located in large numbers. When calculating the diameter of aerosol particles, particles with an average radius of 0.1 μm prevailed at all measurement points.
Keywords: lidar, atmospheric pollution, aerosol
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