The influence of the wind regime on the formation of the atmospheric aerosol concentration field in the surface air of the western and eastern Moscow suburbs
A.A. Vinogradova, D.P. Gubanova
A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
Keywords: near-surface air, aerosol mass concentration, PM10, Moscow, Moscow Region, wind regime
Abstract
The impact of a metropolis on the composition of near-surface air in the suburbs is one of the most pressing environmental problems. The work studies the influence of horizontal wind characteristics (direction, speed) on aerosol concentration in the near-surface air of Moscow megapolis and 50-60 km away from it. The data on PM10 aerosol concentration obtained by the authors in the area of Zvenigorod (western suburb) and in the center of Moscow, as well as measured in Moscow at all atmospheric pollution control stations of the State Budgetary Institution “Mosecomonitoring” (megapolis) and in Pavlovsky Posad (eastern suburb). The “roses" of wind direction frequency, wind velocity, and PM10 concentration at the points of observations in different seasons average over 2021-2024 are analyzed. Despite the predominant air mass transport from the west throughout the year in all three locations, the season average PM10 fluxes have different directions and values both in the city and in the suburban points. In general, the annual PM10 fluxes in near-surface air at the considered points have northerly direction, and they are higher in magnitude in suburban areas than in the city. The results can be useful in assessing environmental risks and public health in the Moscow Region, as well as for climate calculations and verification of their results.
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