Air Mercury Monitoring at the Baikal Area

The GMOS (Global Mercury Observation System) project has the overall goal to develop a coordinated observing system monitor mercury on global scale. Here we present long-term (2011–2020) air monitoring data obtained at Listvyanka station located shore of Lake Baikal, Siberia. shows obvious seasonal variation background concentration in air, which increases cold and decreases warm season. short-term anomalies are associated with wind carrying from industrial areas where several big coal-fired power plants located. A positive correlation between mercury, SO2 NO2 concentrations is observed both variations monthly average concentrations. analysis forward backward trajectories HYSPLIT model demonstrates revealing emissions sources. During cruise 2018, continuous survey over Baikal covered 1800 km. notably less comparison value onshore during same days cruise. That can lead conclusion that significant sink atmospheric mercury.