Abstract
The influence of increased concentrations of submicron aerosol produced by forest fires on thermal characteristics of the atmospheric boundary layer (ABL) in Moscow and its remote vicinity (the town of Zvenigorod) are analyzed on the basis of regular remote measurements of the ABL temperature profile with the use of MTP-5 profilers. In the air basin of a large city, additional aerosol and accompanying pollutants in early morning hours (at small heights of the Sun) most frequently did not cause substantial changes in the ABL thermal structure. In the locality remote from the megalopolis (Zvenigorod), the atmospheric pollution by aerosol led to noticeable changes in the ABL thermal characteristics. Especially strong changes were observed in the daytime, during the maximum supply of solar radiation. In morning hours, the heating rate of the lower 100-m layer of the polluted air exceeded the heating rate of a relatively pure air by more than one degree. In higher layers, the differences between the rates of temperature changes in a relatively clean atmosphere and in an atmosphere polluted by aerosol (in the suburb) were insignificant.
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Original Russian Text © M.N. Khaikin, I.N. Kuznetsova, E.N. Kadygrov, 2006, published in Izvestiya AN. Fizika Atmosfery i Okeana, 2006, Vol. 42, No. 6, pp. 778–784.
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Khaikin, M.N., Kuznetsova, I.N. & Kadygrov, E.N. Influence of a high aerosol concentration on the thermal structure of the atmospheric boundary layer. Izv. Atmos. Ocean. Phys. 42, 715–721 (2006). https://doi.org/10.1134/S0001433806060065
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DOI: https://doi.org/10.1134/S0001433806060065