2. Pollutant metrology

2.1 Monitoring networks

The French government has entrusted the monitoring of outdoor air quality to approved associations (Loi 1901). . There are 27 of them, one in each of the former regions. They are financed by the French government, local authorities and corporate issuers. Their mode of governance and financing gives them independence in terms of the measurements carried out, the data generated and their communication. Technical coordination, and in particular the intercomparison...