Monitoring of Atmospheric Precipitation Chemistry

Regionally representative data from Canada and the U.S. collected using wet-only precipitation collectors including Canadian federal and provincial networks (past and present) and U.S. historical networks (for data not available elsewhere). Data product types include major ions (also known as acid rain), mercury (Hg), and toxic substances such as metals, organic compounds, Polycyclic Aromatic Hydrocarbons (PAH) and Polychlorinated Biphenyls (PCBs).