Atmospheric Blockings in the Northern Hemisphere and Associated Wildfires and Emissions of Impurities into the Atmosphere in Russian Regions

Atmospheric blockings in the regions of the Northern Hemisphere (NH) under general warming during recent decades are analyzed. The total increase in the duration of summer atmospheric blockings in the NH with an increase in the hemispheric surface air temperature over 1969-2022 is estimated based on observations and reanalysis data. Significant coherence of long-term changes of the integral index of summer atmospheric blocking activity is noted for Russian regions and the NH as a whole. A statistically significant correlation between the duration of atmospheric blockings, wildfires in Russian regions, and related gas and aerosol emissions into the atmosphere is estimated based on satellite and reanalysis data, as well as the correlation between Siberian wildfires and anomalies in the content of atmospheric impurities, including black carbon, in Arctic regions.