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  2. Monitoring
A meter that goes into a square hole in the ground

Monitoring provides the ground truth

Different International Cooperative Programmes monitor natural ecosystems conditions with the aim of assessing, on a regional basis, the degree and geographical extent of the impacts of atmospheric pollution.

Data on forests, water, vegetation and more

The long term and extensive monitoring networks and data under the WGE are unique and are vital to detect the rate, the trend, the extent, and intensity of changes of air pollution effects on ecosystems and materials. It enables forecasting of potentially adverse effects and provides early warnings and helps the effectiveness of air pollution policies.

The monitoring is organised by six International Cooperative Programmes (ICPs) that use common methodology and co-ordinate networks of sites across the countries represented in the Convention.