Chemical composition and sources of fine and coarse aerosol particles in the Eastern Mediterranean

Koulouri, E.; Saarikoski, Sanna; Theodosi, C.; Markaki, Z.; Gerasopoulos, E.; Kouvarakis, Giorgos; Mäkelä, Timo; Hillamo, Risto; Mihalopoulos, N.

doi:10.1016/j.atmosenv.2008.04.010

Cited by 218 publications

(216 citation statements)

References 29 publications

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“…However, THR is the only station in the area with measurements throughout the studied period which can be used as regional background (Grivas et al, 2004 More specifically, the average contribution of African dust to traffic urban stations was 49.5 ± 5.8% whereas at background suburban stations it was 72.2 ± 7.3% during the Sahara dust events of the period 2001-2010. The results are in good agreement with those of previously published works which report dust contributions to PM 10 in the range of 60-72% at rural and urban background sites during dust events (Gerasopoulos et al, 2006;Kocak et al, 2007;Koulouri et al, 2008;Remoundaki et al, 2011). In particular, Remoundaki et al (2011) …”

Section: African Dust Loadsupporting

confidence: 82%

Identification of the Influence of African Dust on PM10 Concentrations at the Athens Air Quality Monitoring Network during the Period 2001-2010

Aleksandropoulou

Lazaridis

2013

Aerosol Air Qual. Res.

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The objective of this work was to identify Sahara dust intrusions and quantify their contribution to annual and daily PM 10 concentrations over the Athens Metropolitan Area (AMA) during the period 2001-2010. Additionally, extreme PM 10 values attributed to large forest fires and volcanic emissions or the synergy of the above with African dust intrusions have been identified. It was found that the concentrations of PM 10 during the period studied exceeded the European Union's Air Quality Standard (EU AQS) value at most of the traffic urban (TU) stations. Most of the extreme values were attributed to dust events or large forest fires. The contribution from African dust to PM 10 concentrations on days with events and exceedances of the EU AQS was approximately 50% at TU stations and 72% at the background suburban stations (BS). Most of the African dust events contributed about 5 μg/m 3 to 34 μg/m 3 to the daily PM 10 concentrations, whereas the average contribution to annual PM 10 concentrations was approximately 8.6 ± 1.8 μg/m 3 i.e., 22.2 ± 7.5%. During the decade, no clear interannual relationship was observed between the African dust contribution and the frequency and intensity of events. The more frequent and severe episodes occurred during spring, while less frequent and less severe episodes occurred during summer. After the extraction of the African dust load the annual and daily AQS was exceeded in 2010 at only one TU station. The average annual contribution of African dust to the exceedances was approximately 36% at TU stations and 58% at BS stations.

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Section: African Dust Loadsupporting

confidence: 82%

Identification of the Influence of African Dust on PM10 Concentrations at the Athens Air Quality Monitoring Network during the Period 2001-2010

Aleksandropoulou

Lazaridis

2013

Aerosol Air Qual. Res.

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“…Sulfates, ammonium and nitrates represent 79% of the total mass of inorganic ions determined. Sulfates percentage is at the same level to that reported for the fine fraction and the Eastern Mediterranean region, and taking also into consideration the sulfates levels reported for urban and background sites in the region, it is apparent that sulfates levels above Greece are also largely controlled by longrange transport and processes evolving at a large spatial scale (Bardouki et al, 2003;Koulouri et al, 2008;Theodosi et al, 2011). The mean percentage of ammonium determined in our samples is relatively low, indicating an ammoniumpoor aerosol system (Karageorgos and Rapsomanikis, 2007).…”

Section: Temporal Variability Of the Atmospheric Concentrations Of Thmentioning

confidence: 50%

Composition and Mass Closure of PM2.5 in Urban Environment (Athens, Greece)

Remoundaki

Kassomenos

Mantas

et al. 2013

Aerosol Air Qual. Res.

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“…Finokalia is on the island of Crete, and it is an ideal location to study the aging of OA. The station is isolated and often downwind of European sources [Koulouri et al, 2008] and therefore allows the study of OA from Europe, as well as marine and Saharan aerosol. Also, the photochemical conditions are conducive to high levels of oxidation, especially in the summer [Berresheim et al, 2003].…”

Section: Introductionmentioning

confidence: 99%

Formation of highly oxygenated organic aerosol in the atmosphere: Insights from the Finokalia Aerosol Measurement Experiments

Hildebrandt

Kostenidou

Mihalopoulos

et al. 2010

Geophysical Research Letters

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[1] Aged organic aerosol (OA) was measured at a remote coastal site on the island of Crete, Greece during the Finokalia Aerosol Measurement Experiments (FAME-08 and FAME-09), which were part of the EUCAARI intensive campaigns. Quadrupole aerosol mass spectrometers (Q-AMSs) were employed to measure the size-resolved chemical composition of non-refractory submicron aerosol (NR-PM 1 ), and to estimate the extent of oxidation of the OA. The experiments provide unique insights into ambient oxidation of aerosol by measuring at the same site but under different photochemical conditions. NR-PM 1 concentrations were about a factor of three lower during FAME-09 (winter) than during FAME-08 (summer). The OA sampled was significantly less oxidized and more variable in composition during the winter than during the early summer. Lower OH concentrations in the winter were the main difference between the two campaigns, suggesting that atmospheric formation of highly oxygenated OA is associated with homogeneous photochemical aging.

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Chemical composition and sources of fine and coarse aerosol particles in the Eastern Mediterranean

Cited by 218 publications

References 29 publications

Identification of the Influence of African Dust on PM10 Concentrations at the Athens Air Quality Monitoring Network during the Period 2001-2010

Identification of the Influence of African Dust on PM10 Concentrations at the Athens Air Quality Monitoring Network during the Period 2001-2010

Composition and Mass Closure of PM2.5 in Urban Environment (Athens, Greece)

Formation of highly oxygenated organic aerosol in the atmosphere: Insights from the Finokalia Aerosol Measurement Experiments

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