Major Ions and Acidifying Gases: Daily Canadian Air Quality Measurements
Daily ambient air samples collected by the Canadian Air and Precipitation Monitoring Network (CAPMoN) at a height of 10 meters. Filter pack analysis measures concentrations of particulate ions (Cl-, NO3-, SO4=, NH4+, Na+, K+, Ca++, Mg++) and gaseous pollutants (HNO3, SO2) in micrograms per cubic meter. The dataset is produced by Environment and Climate Change Canada using a methodology described in Sirois and Fricke, 1992.