This report draws on data and information generated from 20 years of particulate matter monitoring. It presents an analysis of the natural sources (background concentrations) of airborne particulate matter to assess the achievability of air quality standards and guidelines for each gazetted New Zealand airshed.
The Ministry for the Environment commissioned GNS Science to undertake this analysis to evaluate the impact that natural sources will have on the achievability of lower particulate matter thresholds, such as those recommended in the World Health Organisation global air quality guidelines.
This report draws on data and information generated from 20 years of particulate matter monitoring. It presents an analysis of the natural sources (background concentrations) of airborne particulate matter to assess the achievability of air quality standards and guidelines for each gazetted New Zealand airshed.
The Ministry for the Environment commissioned GNS Science to undertake this analysis to evaluate the impact that natural sources will have on the achievability of lower particulate matter thresholds, such as those recommended in the World Health Organisation global air quality guidelines.