Repozitorij Univerze v Novi Gorici

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Naslov:Modeling the multiday evolution and aging of secondary organic aerosol during MILAGRO 2006
Avtorji:Džepina, Katja (Avtor)
Cappa, Christopher D. (Avtor)
Volkamer, Rainer (Avtor)
Madronich, Sasha (Avtor)
DeCarlo, Peter F. (Avtor)
Zaveri, Rahul A. (Avtor)
Jimenez, Jose L. (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:Neznano ()
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:In this study, we apply several recently proposed models to the evolution of secondary organic aerosols (SOA) and organic gases advected from downtown Mexico City at: an altitude of similar to 3.5 km during three days of aging, in a way that is directly comparable to simulations in regional and global models. We constrain the model with and compare its results to available observations. The model SOA formed from oxidation of volatile organic compounds (V-SOA) when using a non-aging SOA parameterization cannot explain the observed SOA concentrations in aged pollution, despite the increasing importance of the low-NO, channel. However, when using an aging SOA parameterization, V-SOA alone is similar to the regional aircraft observations, highlighting the wide diversity in current V-SOA formulations. When the SOA formed from oxidation of semivolatile and intermediate volatility organic vapors (SI-SOA) is computed following Robinson et al. (2007) the model matches the observed SOA mass, but its 0/C is similar to 2 x too low. With the parameterization of Grieshop et al. (2009), the total SOA mass is similar to 2 x too high, but 0/C and volatility are closer to the observations. Heating or dilution cause the evaporation of a substantial fraction of the model SOA; this fraction is reduced by aging although differently for heating vs dilution. Lifting of the airmass to the free-troposphere during dry convection substantially increases SOA by condensation of semivolatile vapors; this effect is reduced by aging.
Ključne besede:Mexico-city, volatility, semivolatile, transport, campaign
Leto izida:2011
Št. strani:str. 3496-3503
Številčenje:iss. 8, Vol. 45
COBISS_ID:59047171 Povezava se odpre v novem oknu
UDK:54
ISSN pri članku:0013-936X
URN:URN:SI:UNG:REP:0G6MLOJ7
Število ogledov:116
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:Environmental science & technology
Skrajšan naslov:Environ. sci. technol.
Založnik:American Chemical Society
ISSN:0013-936X
COBISS.SI-ID:5141765 Novo okno

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