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Ambient air is sampled daily, with a nominal 24-hour sampling period, on a Canadian Air and Precipitation Monitoring Network (CAPMoN) sequential sample head located 10 meters above ground. Air is drawn through a three-stage filter pack consisting of 47-millimeter Teflon, nylon and cellulose...

With new, more transmissible variants of the COVID-19 virus in countries around the world, the Government of Canada continues to take a data-driven and precautionary approach to its border measures for travellers entering Canada. The Government of Canada's phased approach to easing border...

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides,...

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides,...

The Continuous Non-Methane Hydrocarbon (NMHC) Measurements Study was a measurement program carried out at the Centre for Atmospheric Research Experiments (CARE) at Egbert, ON. Approximately 30 C2 to C8 hydrocarbons were collected and analyzed every three hours by an automated, in-situ gas...

In October and November 2015, ground-based air measurements of pollutants were made from two mobile laboratories in southeast Saskatchewan in an area within a 50 km radius of Stoughton, Saskatchewan by scientists of the Air Quality Research Division, Environment and Climate Change Canada....

Ground level ozone and meteorological parameters were measured at the Mount Sutton research site from October 1986-June 2008. The main objectives of these measurements were: to characterize high elevation (845 m.a.s.l.) ozone levels in this rural region; and 2. to determine long term ozone...

The Great Lakes Basin (GLB) Monitoring and Surveillance program under the Chemicals Management Plan (CMP) of Environment and Climate Change Canada (ECCC) has been operating since 1990 as a result of provisions called for in the Great Lakes Water Quality Agreement (GLWQA) between Canada and the...

These data are associated with the following two publications: Zhiyong Wu, Staebler R., Vet R., and Zhang L. (2016), Dry deposition of O3 and SO2 estimated from gradient measurements above a temperate mixed forest. Environmental Pollution, 210, 202-210, DOI: 10.1016/j.envpol.2015.11.052 and...

Ground level ozone (GLO3) was measured at the Alert, Nunavut research station (82º28’N, 62º30’W) from 31 December 1991 to 31 December 2003. These measurements were conducted to: 1. determine a long term trend in background ozone, and 2. to understand the annual appearance of surface level ozone...