Keywordsmercury; wet deposition; trend; GEOS-Chem; nested-grid model; mercury; total gaseous mercury; air quality; principal component analysis; HYSPLIT; Fort McMurray; oil sands; mercury deposition; atmospheric mercury; mercury emissions; policy scenarios; renewable energies; atmospheric dispersion; co-benefits; atmospheric mercury; gaseous elemental mercury; gaseous oxidized mercury; particulate-bound mercury; Gulf of Mexico; principal component analysis; HYSPLIT; mercury; total gaseous mercury; back-trajectory; PSCF; Chinese source; Korean source; mercury; emission; air; pollution; mercury; total gaseous mercury; urban air quality; emission inventories; atmospheric mercury; total gaseous mercury; temporal variability; principal component analysis; directional concentrations; pollutant rose; long-range transport; atmospheric mercury; gaseous elemental mercury; gaseous oxidized mercury; particulate-bound mercury; airborne measurements; vertical profile; HYSPLIT; programmable thermal dissociation; mercury; gaseous elemental mercury; reactive gaseous mercury; elemental mercury; total gaseous mercury; reactive mercury; gaseous oxidized mercury; particulate mercury; cycling of atmospheric mercury; mercury in precipitation; mercury trends