TOPAS (beta version)

TNO Operational Pollution Apportionment Service

TOPAS

This prototype source apportionment service is a product based on the chemical transport model LOTOS-EUROS and the emission knowledge developed at TNO. Information on intercontinental transport and forest fire emissions are taken from the Copernicus Atmospheric Monitoring Service. Modelled source specific PM concentrations representing urban background conditions are uploaded daily before noon.