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Naslov:On the regional aspects of new particle formation in the Eastern Mediterranean : a comparative study between a background and an urban site based on long term observations
Avtorji:ID Kalkavouras, Panayiotis (Avtor)
ID Bougiatioti, Aikaterini (Avtor)
ID Grivas, Georgios (Avtor)
ID Stavroulas, Iasonas (Avtor)
ID Kalivitis, Nikos (Avtor)
ID Liakakou, Eleni (Avtor)
ID Gerasopoulos, Evangelos (Avtor)
ID Pilinis, Christodoulos (Avtor)
ID Mihalopoulos, Nikolaos (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Atmospheric new particle formation (NPF) is an important source of submicron particles. In remote background environments where local sources are scarce such processes may impact significantly on climate-relevant parameters. On the other hand, in urban environments, newly-formed particles are adding up to submicron particles emitted from primary sources. As the exact mechanism which triggers NPF still remains elusive, so are the circumstances for simultaneous occurrence of such events in two different environments (urban vs. regional background). In this study, concurrent number size distribution measurements were conducted in the urban environment of Athens and at the regional background site of Finokalia, Crete, located 340 km away and spanning a 2-year period. It occurred that the relative frequency of NPF was similar at both sites (around 20%), with a higher frequency during spring and autumn at the urban site, while at the background site most events took place in August and December, during the studied period. There were 35 event days when NPF took place at both sites simultaneously, all associated with air masses originating from the Northern sector, indicating the presence of regional events in the extended geographical area and characterized by low condensation sink (CS). By comparing the common with the non-common class I NPF episodes, we conclude that the conditions applying when regional NPF events with growth are observed in the same day at the surface level of both areas, are: (i) lower CS, (ii) higher SO2 concentrations, (iii) lower RH, and finally (iv) lower formation and growth rates than those observed during the site-specific and more rapidly evolving NPF events.
Ključne besede:NPF, Athens, Eastern Mediterranean, particle number concentrations, size distributions, concurrent regional events
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2020
Leto izida:2020
Št. strani:str. 1-14
Številčenje:Vol. 239, [article no.] ǂ104911
PID:20.500.12556/RUNG-9055 Novo okno
ISSN:0169-8095
COBISS.SI-ID:195086339 Novo okno
UDK:502.3/.7
ISSN pri članku:0169-8095
DOI:10.1016/j.atmosres.2020.104911 Novo okno
NUK URN:URN:SI:UNG:REP:6QNB8TNU
Datum objave v RUNG:10.05.2024
Število ogledov:433
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Atmospheric research
Skrajšan naslov:Atmos. res.
Založnik:Elsevier
ISSN:0169-8095
COBISS.SI-ID:26715136 Novo okno

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