SPATIO-TEMPORAL ANALYSIS OF FOG RECURRENCE IN THE PERM REGION AND ITS IMPACT ON ATMOSPHERIC POLLUTION

The article presents a spatio-temporal analysis of fog recurrence according to data from 11 weather stations in the Perm region. effect on air pollution cities region is also considered. study period 1999-2016. Fogs Krai are observed throughout year. Their distribution by month and territory uneven. maximum number days with fogs warm seasons. most often Cherdyn, Vaya Oktyabrsky stations, mainly August-October. synoptic situations which include low-gradient field, cyclone sector anticyclone centre. These account for more than 70 % all were observed. level at these was high low. High created south-western periphery centre anticyclone, Gubakha - northern, eastern anticyclone. In towns Berezniki Solikamsk, no dangerous levels fogs. Analysis conducted identify cases exceeding Maximum Permissible Concentrations (MPC) pollutants showed that MPC quite frequent. Perm, Solikamsk exceedances formaldehyde 40 77 impurities. Berezniki, nitrogen dioxide hydrochloric acid 65 exceedances.