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HomeAttribution of anthropogenic PM₂.₅ to emission sources
Meiteashonraí an fhoilseacháin
Outdoor air pollution – in particular fine particulate matter, PM2.5 - is a major issue of concern in the public health domain. Efficient control strategies depend on the understanding of the major sources contributing to the atmospheric PM2.5 burden. This report performs for the first time a comparison between PM2.5 source apportionment results from in-situ point measurements, obtained from a screened literature review, and from global air quality modelling using the in-house developed global source-receptor air quality model TM5-FASST. Both experimental and numerical modelling techniques have been proven to provide valuable information about the emitting sectors contributing to ambient PM2.5. JRC has specific expertise in the source attribution of in-situ measured PM2.5 composition at selected spots using well-established and validated source-apportionment techniques, as well as in the global and regional scale bottom-up modelling of PM2.5 levels and compounds, using sector-specific emission inventories as input. Both approaches address the issue of source apportionment, but at a completely different spatial scale and resolution. The global TM5-FASST model takes as input the EDGAR-HTAP V2 global air pollution emission inventory, separated by major economic sector, and computes corresponding pollutant concentrations by sector. The experimental source apportionment data are obtained with receptor modelling techniques applied on the observed in-situ chemical composition of PM2.5. The outcome of the global model shows that in regions with the highest PM2.5 levels (China, India, Western Africa), residential burning is the major contributing sector whereas in western Europe it is the agricultural sector, followed by road transport. A comparison between the global model and regionally aggregated in-situ source apportionment results shows a reasonable agreement in the PM2.5 concentrations attributed to the industry sector. On the other hand, for the transport sector large discrepancies are found between the two methodologies. These discrepancies can be tentatively attributed to the different resolution at which the concentration levels are evaluated, and the limited spatial representativeness of some pollution hotspots for the in-situ measurements, but there may also be underlying uncertainties in the emission inventories used as input for the global model.
- Dáta foilsithe:
- Téamaí: Beartas comhshaoil agus cosaint an chomhshaoil , Taighde comhshaoil
- Ábhar: bearta rialaithe truaillithe , laghdú astaíochtaí gás , mianach an chomhshaoil , modh taighde , taighde comhshaoil , tionchar ar an gcomhshaol , truailliú an atmaisféir , tuarascáil taighde
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| ISSN 1831-9424 | ISBN 978-92-79-66599-8 | DOI 10.2760/344371 | Uimhir chatalóige KJ-NA-28510-EN-N |
- Released on EU publications website:
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