Description
Albertans had limited activities that could promote transmission of the COVID-19 virus during the spring 2020 public health emergency. As a result, vehicle traffic had decreased. In urban areas, emissions from vehicles contribute to nitrogen dioxide concentrations in the air. Nitrogen dioxide is an indicator of air quality that affects respiratory health and can react in the atmosphere to form secondary pollutants such as ozone and fine particulate matter. Between March 16 and April 24, 2020, following the public health emergency, concentrations of nitrogen dioxide in the air in Alberta’s largest cities, Calgary and Edmonton, were at least 14 per cent lower than in previous years.
Updated
January 25, 2022
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Title and publication information
Type
Extent
4 pages
Frequency
Once
Publisher / Creator Information
Subject Information
Topic
Start Date
2020-03-16
End Date
2020-04-24
Resource Dates
Date Created
2022-01-25
Date Added
2022-01-25T18:13:13.185586
Date Modified
2022-01-25
Date Issued
2022-01-25
Audience information
Language
Identifiers
Usage / Licence
Contact
Contact Name
Alberta Environment and Parks. Resource Stewardship Division. Airshed and Watershed Stewardship Branch.