Information about the top 10 report
CELINE-IRCEL publishes daily through internet a bulletin in which the 10 highest concentrations of the main pollutants (as well as the meteorological parameters) are presented. This information is obtained from the air quality telemetric networks of the 3 Regions (Flanders, Brussels et Wallonia).
Following the kind of pollutant (or meteorological parameter), the top 10 report presents half-hourly or daily concentrations.
The measuring networks are ruled by the Vlaamse Milieumaatschappij (VMM), the Brussels Institute for Management of the Environment (IBGE), the Institut scientifique de Service public (ISSEP) and the Direction générale des Ressources naturelles et de lEnvironnement (DGRNE).
In addition to the pollutants listed below, the Regions measure also heavy metals, poly-aromatic hydrocarbons (PAK), dioxines, etc.
Those pollutants are not measured automatically and as a consequence, they are not available to CELINE-IRCEL on a daily basis.
The following pollution and meteo parameters are presented in the top10 :
Pollutants:
name | symbol in top 10 | unit | expressed as |
Sulphur dioxide | SO2 | µg/m3 | Daily average |
Total Particles | DUST | µg/m3 | Daily average |
Small particles | PM10 | µg/m3 | Daily average |
Carbon monoxide | CO | ppm | Half-hourly maximum |
Nitrogen dioxide | NO2 | µg/m3 | Half-hourly maximum |
Nitrogen monoxide | NO | µg/m3 | Half-hourly maximum |
Ozone | O3 | µg/m3 | Half-hourly maximum |
Hydrocarbons (minus methane) | CnHm | ppm | Half-hourly maximum |
Aromatic hydrocarbons | CxHy | ppm | Half-hourly maximum |
Meteo:
name | symbol in top 10 | unit | expressed as |
Wind speed | WSP | m/s | Daily average |
Wind direction (1) | WDIR | degree | (coupled with wind speed) |
Atmospheric pressure | Pressure | hPa | Daily average |
Temperature | TEMP | degree C | Daily average |
Rain | Rain | millimeters | Total journalier |
Relative humidity | Rel Hum | % | Daily average |
(1) 90°=Est, 180°=Sud, 270°=Ouest, 360°=Nord