Air quality measurements

Air quality measurement programs are essential to advancing the understanding of atmospheric constituents and the impact of human activities on the environment.  Being able to identify different air pollution sources accurately increases the ability to put in place effective policy and regulatory measures to improve the quality of the air Canadians breathe.

Environment Canada’s air quality research scientists, chemists, engineers and technologists collect scientific data through various monitoring and sampling programs, with air and precipitation measurements taken at urban, rural and background locations, as well as using remote sensing techniques such as light detection and ranging (lidar) technology, and through ground-based monitoring of the stratosphere.  All measurements undertaken are of the highest quality, using accurate calibration techniques and maintaining third-party accreditation to international standards.

Systematic measurements are taken to:

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