Synchronous Variations of the Mass Concentration of Near-Ground Aerosol, Nitrogen Oxides, and Ozone in the Moscow Region

摘要

During 2007-2008 in the Moscow region, a cycle of complex observations of a number of gaseous and aerosol constituents of the atmosphere was performed. Incorporating the data of back trajectory analysis, we circumscribed a range of atmospheric situations when abrupt changes in the content of these variables were associated with long-range transport in the atmosphere. Primarily, this was due to an across-Moscow passage of warm atmospheric fronts of occlusion in Atlantic and Mediterranean maritime cyclones. In such situations, the abundances of NO_2 and NO and aerosol mass concentrations simultaneously increase, while the ozone concentration decreases. This is accompanied by a marked decrease of the refractive index of the particle substance. The response of the parameter of aerosol condensation activity is not unique.