Repozitorij Univerze v Novi Gorici

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Naslov:CityFlux perfluorocarbon tracer experiments
Avtorji:Petersson, Fredrik K (Avtor)
Martin, Damien (Avtor)
White, Iain R (Avtor)
Henshaw, Stephen J (Avtor)
Nickless, Graham (Avtor)
Longley, Ian (Avtor)
Percival, Carl J (Avtor)
Gallagher, Martin (Avtor)
Shallcross, Dudley E. (Avtor)
Datoteke:Gradivo nima datotek. 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:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:In June 2006, two perfluorocarbon tracer experiments were conducted in central Manchester UK as part of the CityFlux campaign. The main aim was to investigate vertical dispersion in an urban area during convective conditions, but dispersion mechanisms within the street network were also studied. Paired receptors were used in most cases where one receptor was located at ground level and one at roof level. One receptor was located on the roof of Portland Tower which is an 80m high building in central Manchester. Source receptor distances in the two experiments varied between 120 and 600 m. The results reveal that maximum concentration was sometimes found at roof level rather than at ground level implying the effectiveness of convective forces on dispersion. The degree of vertical dispersion was found to be dependent on source receptor distance as well as on building height in proximity to the release site. Evidence of flow channelling in a street canyon was also found. Both a Gaussian profile and a street network model were applied and the results show that the urban topography may lead to highly effective flow channelling which therefore may be a very important dispersion mechanism should the right meteorological conditions prevail. The experimental results from this campaign have also been compared with a simple urban dispersion model that was developed during the DAPPLE framework and show good agreement with this. The results presented here are some of the first published regarding vertical dispersion. More tracer experiments are needed in order to further characterise vertical concentration profiles and their dependence on, for instance, atmospheric stability. The impact of urban topography on pollutant dispersion is important to focus on in future tracer experiments in order to improve performance of models as well as for our understanding of the relationship between air quality and public health.
Ključne besede:air quality, atmospheric chemistry, concentration (composition), convective system, dispersion, public health, street canyon, tracer, urban area
Leto izida:2010
Št. strani:5991-5997
Številčenje:10, 13
COBISS_ID:5418235 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:FXTHXVOP
DOI:10.5194/acp-10-5991-2010 Povezava se odpre v novem oknu
Licenca:CC BY-SA 4.0
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva-Deljenje pod enakimi pogoji 4.0 Mednarodna
Število ogledov:483
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Gradivo ni uvrščeno v področja.
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.

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Gradivo je del revije

Naslov:Atmospheric Chemistry and Physics
Skrajšan naslov:Atmos. Chem. Phys.
Založnik:Copernicus
ISSN:16807316
Leto izida:2010

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