Overview Source apportionment (SA) identifies sources of pollution in the air and quantifies each source's contribution to pollution levels. Among our work on this topic, the JRC provides tools and databases for the SA research community. SpeciEurope SpeciEurope is a database of atmospheric particulate matter (PM) emission source profiles in Europe. It is designed to help the community of experts working on source apportionment to achieve better definition of sources and therefore more reliable source attribution.The database contains the chemical composition of PM emission sources reported in scientific literature and reports drafted by competent authorities. It is searchable by source category, species, PM size fraction, country, site and test year. Contributions of source profile data from European experts is very much welcome to ensure the continuous development of SpeciEurope. All contributions are acknowledged, see how to contribute for more information. SpeciEurope database of PM source profiles Delta tool for Source Apportionment (DeltaSA) DeltaSA is an online tool to assess source apportionment model outputs in line with the European Committee for Standardization (CEN) Technical Specification 17458:2020. The tool works in two different modes.The first is the source chemical profiles similarity test (CPS) accomplished by comparing those obtained by the user with more than one thousand PM10/PM2.5 source measured chemical profiles from the United States Environmental Protection Agency's SPECIATE repository and the SpeciEurope repository. This configuration is intended to support practitioners in the identification of factors during the execution of factor analytical tools.The second mode consists in a complete test of the model performance using a testing dataset and reference values generated in the framework of inter-comparison exercises organised by the Joint Research Centre.DeltaSA Related links More about JRC's work on source apportionment.
