Emissions values, as well as emission ratios for greenhouse and reactive gases were evaluated for anthropogenic sources and wildfires. Our study is based on ground-based Fourier transform infrared measurements of CO, HCN, C2H6, H2CO, OCS and CH4 total columns, zenith-sky DOAS measurements of tropospheric column of NO2 and results of the local monitoring of CH4, CO2 and CO concentrations performed at the St. Petersburg site during 2013-2016. In addition, we involve into analysis the following data and information: satellite observations of the tropospheric column of NO2 (OMI), aerosol optical thickness (MODIS) and ultraviolet aerosol index (OMI, OMPS); information on location and intensity of wildfires; AERONET data on aerosol optical thickness; results of trajectory and dispersion simulations using HYSPLIT model.