Standard Article

The Canadian Environmental Sustainability Indicators: On Population-Weighted Ground-Level Ozone

Environmental Policy and Regulation

  1. Soheil Rastan1,
  2. Joe St. Lawrence1,
  3. Dennis Herod2

Published Online: 15 JAN 2013

DOI: 10.1002/9780470057339.vnn009

Encyclopedia of Environmetrics

Encyclopedia of Environmetrics

How to Cite

Rastan, S., St. Lawrence, J. and Herod, D. 2013. The Canadian Environmental Sustainability Indicators: On Population-Weighted Ground-Level Ozone. Encyclopedia of Environmetrics. 1.

Author Information

  1. 1

    Statistics Canada, Ontario, Canada

  2. 2

    Environment Canada, Canada

Publication History

  1. Published Online: 15 JAN 2013


This article extends the trend analysis and builds upon the Canadian Environmental Sustainability Indicators (ground-level ozone indicator). It presents two additional population-weighted ground-level ozone concentration trends from 1990 to 2005. During this period, the estimated increase in population-weighted concentration levels, based on the lower end of the annual concentration data, was statistically more significant than the estimated increase based on the middle range of the annual concentration data. However, no increase or decrease in population-weighted concentration levels was detected in the upper end of the data. The results of this hypothesis-generating study indicate that as far as the national estimate of population-weighted eight-hour maximum ground-level ozone concentration is concerned, the good days are getting worse and the bad days remain the same.


  • environmental sustainability indicators;
  • ground-level ozone;
  • population-weighted;
  • air quality trend;
  • ozone scavenging