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Naslov:Online chemical characterization and sources of submicron aerosol in the major mediterranean port city of Piraeus, Greece
Avtorji:ID Stavroulas, Iasonas (Avtor)
ID Grivas, Georgios (Avtor)
ID Liakakou, Eleni (Avtor)
ID Kalkavouras, Panayiotis (Avtor)
ID Bougiatioti, Aikaterini (Avtor)
ID Kaskaoutis, Dimitris G. (Avtor)
ID Lianou, Maria (Avtor)
ID Papoutsidaki, Kyriaki (Avtor)
ID Tsagkaraki, M. (Avtor)
ID Gerasopoulos, Evangelos (Avtor)
ID Zarmpas, Pavlos (Avtor)
ID Mihalopoulos, Nikolaos (Avtor)
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Port cities are affected by a wide array of emissions, including those from the shipping, road transport, and residential sectors; therefore, the characterization and apportionment of such sources in a high temporal resolution is crucial. This study presents measurements of fine aerosol chemical composition in Piraeus, one of the largest European ports, during two monthly periods (winter vs. summer) in 2018–2019, using online instrumentation (Aerosol Chemical Speciation Monitor—ACSM, 7-λ aethalometer). PMF source apportionment was performed on the ACSM mass spectra to quantify organic aerosol (OA) components, while equivalent black carbon (BC) was decomposed to its fossil fuel combustion and biomass burning (BB) fractions. The combined traffic, shipping and, especially, residential emissions led to considerably elevated submicron aerosol levels (22.8 μg m−3) in winter, which frequently became episodic late at night under stagnant conditions. Carbonaceous compounds comprised the major portion of this submicron aerosol in winter, with mean OA and BC contributions of 61% (13.9 μg m−3) and 16% (3.7 μg m−3), respectively. The contribution of BB to BC concentrations was considerable and spatially uniform. OA related to BB emissions (fresh and processed) and hydrocarbon-like OA (from vehicular traffic and port-related fossil fuel emissions including shipping) accounted for 37% and 30% of OA, respectively. In summer, the average PM1 concentration was significantly lower (14.8 μg m−3) and less variable, especially for the components associated with secondary aerosols (such as OA and sulfate). The effect of the port sector was evident in summer and maintained BC concentrations at high levels (2.8 μg m−3), despite the absence of BB and improved atmospheric dispersion. Oxygenated components yielded over 70% of OA in summer, with the more oxidized secondary component of regional origin being dominant (41%) despite the intensity of local sources, in the Piraeus environment. In general, with respect to local sources that can be the target of mitigation policies, this work highlights the importance of port-related activities but also reveals the extensive wintertime impact of residential wood burning. While a separation of the BB source is feasible, more research is needed on how to disentangle the short-term effects of different fossil-fuel combustion sources.
Ključne besede:Athens, harbor, shipping emissions, PM1, chemical speciation, organic aerosol, black carbon, ACSM, aethalometer, PMF
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2021
Leto izida:2021
Št. strani:str. 1-28
Številčenje:Vol. 12, issue 12, [article no.] 1686
PID:20.500.12556/RUNG-9046 Novo okno
COBISS.SI-ID:195062019 Novo okno
ISSN pri članku:2073-4433
DOI:10.3390/atmos12121686 Novo okno
Datum objave v RUNG:10.05.2024
Število ogledov:233
Število prenosov:2
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Skrajšan naslov:Atmosphere
Založnik:MDPI AG
COBISS.SI-ID:522992153 Novo okno


Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:16.12.2021