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| Titel |
Spatial distribution of summertime particulate matter and its composition in Greece |
| VerfasserIn |
Maria Tsiflikiotou, Dimitris Papanastasiou, Paulos Zarmpas, Despoina Paraskevopoulou, Evangelia Diapouli, Evangelia Kostenidou, Christos Kaltsonoudis, Aikaterini Bougiatioti, Christina Theodosi, George Kouvarakis, Eleni Liakakou, Vassiliki Vassilatou, Dimitris Siakavaras, George Biskos, Konstantinos Eleftheriadis, Evangelos Gerasopoulos, Nikos Mihalopoulos, Spyros Pandis |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098063
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| Publikation (Nr.) |
 EGU/EGU2014-13704.pdf |
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| Zusammenfassung |
| A field campaign was conducted in Greece during the summer of 2012 (8 June - 26 July) to
investigate ambient particulate matter (PM) levels, chemical composition and contribution of
regional and local sources. Simultaneous collection of PM1, PM2.5 and PM10 samples from
seven different sampling sites in Greece were collected, two sites in Athens - Ag.
Paraskevi Demokritos campus (suburban background), - Penteli (National Observatory
of Athens NOA premises, suburban background), one in Thessaloniki (suburban
background), two stations in Patras - Centre (urban background), - suburbs/ICE
FORTH campus (suburban background), one at Finokalia in the northeast part of Crete
(remote background) and the last one at the Navarino Environmental Observatory
(NEO) in southwest Peloponnese (rural background). These different background
sites were chosen in order to estimate both the local emissions sources and the
long range transport. A suite of continuous/online instruments were deployed in
selected sites including an Aerodyne High-Resolution Time-of-Flight Aerosol Mass
Spectrometer (HR-ToF AMS), an Aerosol Chemical Speciation Monitor (ACSM), a Proton
Transfer Reaction-Mass Spectrometer (PTR-MS), a Tapered Element Oscillating
Microbalance (TEOM), Nephelometers and Aethalometers, gas-phase monitors, etc. The
collected filter samples from all sites were analyzed for major ions, OC/EC, metals,
etc.
The fine PM mass concentration and chemical measurements were quite similar in all
sites suggesting significant contributions of transported regional pollution and smaller
contributions of local sources. The campaign average PM2.5 ranged from 17.5 to 20 μg m-3
for the different sites. The Athens suburban site in Demokritos had the highest concentration
PM2.5 levels. Sulphates and organics were the major PM2.5 components while nitrates,
mineral dust and sea-salt for the coastal areas were also important for the PM10 fraction. The
sulphate levels were similar in all sites, while the concentration of the organics and
mineral dust were more variable. Most of the organic aerosol was highly oxygenated. |
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