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| Titel |
The AIRPARIF-AEROSOL project: A comprehensive source apportionment study of fine aerosols (PM2.5) in the region of Paris (France) |
| VerfasserIn |
Jean Sciare, Véronique Ghersi, Michael Bressi, Philippe Lameloise, Nicolas Bonnaire, Amandine Rosso, José Nicolas, Sophie Moukhtar, Anais Ferron, Dominique Baumier |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250036887
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| Zusammenfassung |
| With a population of about 12 millions inhabitants (20% of the French population), Greater
Paris (France) is one of the most populated megacity in Europe and among the few located in
developed countries. Due to its favorable geographical situation (far from other big European
cities and influenced very often by clean oceanic air masses), it may be considered as a good
candidate for investigating the build-up of urban air pollution from temperate industrialized
countries.
Particulate mass of fine aerosols with aerodynamic diameter below 2.5μm (PM2.5) is
continuously monitored at several stations from great Paris for almost 8 years by the local air
quality network (AIRPARIF), using a conventional on-line automatic system (R&P TEOM;
see Patashnik and Rupprecht, 1991). During the period 2000-2006, levels of PM2.5 in the
region of Paris have shown rather stable yearly mean values ranging 13 to 16μg/m3 whereas
most of the other pollutants monitored by AIRPARIF have shown a net decrease during this
period (http:\\www.airparif.asso.fr). Since the year 2007, this situation has becoming worse
for particulate pollution with a net increase of the yearly mean concentration of
PM2.5 (up to 21μg/m3), which increase is partly due to the use of a new PM2.5
measurement technique (R&P TEOM-FDMS instrument) enabling a proper determination
of the semi-volatile fraction of fine aerosols. Although this new method greatly
improves the determination of PM2.5, it has also brought PM2.5 levels in the region of
Paris closer to the 25μg/m3 yearly mean targeted value recommended by Europe
for 2010 (limit value for 2015). Efficient abatement policies aiming at reducing
levels of PM2.5 in the region of Paris will have to be fed by preliminary PM2.5
source apportionment studies and exhaustive aerosol chemistry studies (chemical
mass balance) allowing a better separation between regional to continental aerosol
sources.
The objective of the AIRPARIF-AEROSOL project aims to perform a spatially- and
temporally- resolved source apportionment study of fine aerosols (PM2.5) in the region of
Paris (France). This study will be using a large aerosol sampling network composed by 3
rural, 1 suburban, 1 urban, and 1 traffic stations covering the region of Paris (100x100km).
Daily (24-H) sampling are conducted at each station for a period of 1 year (11/09/2009 –
11/09/2010) and comprise two samplers running at 2.3m3/h in PM2.5. Aerosol composition
is performed at each site and includes gravimetry, ion composition, metal analyses, carbon
measurements (EC, BC, OC, WSOC), and few organic tracers (incl. levoglucosan, MSA,
-¦).
This large dataset will offer us the opportunity to test different source apportionment
technique that will help to better characterize the major PM2.5 sources in the region of Paris
as well to better discriminate between regional against continental (EU) contributions. This
dataset will also allow a better understanding of the primary/secondary sources of
carbonaceous aerosols at a regional scale.
This poster is a general presentation of the AIRPARIF-AEROSOL project and will
include the first results coming out from aerosol chemical analyses (incl. chemical mass
balance) for the first 3 months for the 1-year measurement program. |
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