Environment and Climate Change Canada

The National Air Pollution Surveillance (NAPS) program is the main source of ambient air quality data in Canada. The NAPS program, which began in 1969, is now comprised of nearly 260 stations in 150 rural and urban communities reporting to the Canada-Wide Air Quality Database (CWAQD). Managed by...

A series of surface climate parameters have been measured by members of the Climate Processes Section at the Borden Forest Research Station (44°19’N, 79°56’W) beginning in January 2006. The initial data included precipitation. In 2007, carbon dioxide fluxes from the soil (soil respiration) began...

Drought projections on seasonal to annual time scales are presented for Canada over the twenty-first century, based on the Standardized Precipitation Evapotranspiration Index (SPEI). Results make use of bias-corrected temperature and precipitation projections from 29 global climate models...

This dataset contains relative trends of annual and monthly regional maximum ocean wave heights in the Arctic, and data for three predictors derived from surface winds and sea ice concentration. It also contains estimates of historical (1979-2205) and future (2081-2100, RCP8.5 scenario) annual...

Atmospheric concentrations and deposition rates of particulate elements are important indicators for determining the potential impacts of the oil sands industries on the local environment. The datasets consist of measured ambient air concentrations (in PM2.5 and PM2.5-10) and estimated deposition...

This notice applied to owners of textile mills that manufactured textile using wet processing, used nonylphenol and its ethoxylates, and discharged their effluents, with a daily flow greater than 30 m3, to an off-site wastewater treatment facility. This notice was in effect from December 4, 2004...

This notice applied to owners of wastewater systems that, as specified in the notice, released effluent to surface water and where the concentration of total residual chlorine in the effluent was greater than 0.02 mg/L. This notice was in effect from December 4, 2004, to June 15, 2010. It is now...

This notice applies to owners of facilities that manufacture or use greater than 100 kg of siloxane D4 per year (alone or in a mixture), release effluents containing siloxane D4, and are involved in the activities specified in the notice. This notice has been in effect since June 2, 2012, for...

This notice applies to owners of dental facilities that perform activities in relation to dental amalgam or elemental mercury. This notice has been in effect since May 8, 2010, for owners of dental facilities. Although the initial facilities subject have completed their obligations, this notice...

This notice applies to owners of facilities that manufacture or use greater than 100 kg of bisphenol A per year (alone or in a mixture), release effluents containing bisphenol A, and are involved in the activities specified in the notice. This notice has been in effect since April 14, 2012, for...

This notice applied to owners of facilities that manufactured or imported soap and cleaning products, or processing aids used in the textile wet processing, or pulp and paper processing aids. This notice was in effect from December 4, 2004 to December 31, 2010. It is now completed. For more...

This notice applied to 5 facilities that used wood preservatives containing toxic substances as specified in the notice. This notice was in effect from October 22, 2005 to December 31, 2005. It is now completed. For more information please refer to the Notice link provided below.

This notice applied to manufacturers of vehicles that contained mercury switches and owners of steel mills that processed end-of-life vehicles or steel scrap from end-of-life vehicles. This notice has been in effect since December 29, 2007, for automobile and steel manufacturers. Although the...

This notice applies to owners of facilities in the polyurethane and other foam sector that purchase, import or use 100 kg or more of toluene diisocyanates per year, and are involved in the activities specified in the notice. This notice has been in effect since November 26, 2011, for facilities...

This notice applied to owners of facilities involved in certain activities and that used 1000 kg or more of dichloromethane per year. This notice was in effect from November 29, 2003, to December 31, 2005, for persons involved in pharmaceuticals and chemical intermediates manufacturing and tablet...

Pollution Prevention (P2) Planning Notices published in the Canada Gazette under the Canadian Environmental Protection Act, 1999 (CEPA) legally require persons subject to the Notice to prepare and implement a pollution prevention plan in respect of a specified substance(s). Environment and...

High-resolution statistically downscaled climate indices relevant to climate change impacts in Canada are available at a 10 km spatial resolution and an annual temporal resolution for 1951-2100. The climate indices are based on model projections from 24 global climate models (GCMs) that...

This notice applied to owners of facilities that manufactured synthetic rubber using acrylonitrile which resulted in releases of acrylonitrile to the environment. This notice was in effect from May 24, 2003, to May 31, 2007, for facilities involved in the manufacture of synthetic rubber. It is...

Mesoscale boundaries have an important influence on mesoscale weather. They can trigger, enhance or inhibit convections and severe weather. They are also indicators of shifts in wind speed and direction, temperature and relative humidity, and can affect air quality and heat indices. Around the...

Mesoscale boundaries have an important influence on mesoscale weather. They can trigger, enhance or inhibit convections and severe weather. They are also indicators of shifts in wind speed and direction, temperature and relative humidity, and can affect air quality and heat indices. Around the...