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Simulating secondar...
Simulating secondary organic aerosol from missing diesel-related intermediate-volatility organic compound emissions during the Clean Air for London (ClearfLo) campaign
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Ots, R. (author)
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Young, D. E. (author)
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Vieno, M. (author)
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Xu, L. (author)
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Dunmore, R. E. (author)
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Allan, J. D. (author)
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Coe, H. (author)
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Williams, L. R. (author)
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Herndon, S. C. (author)
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Ng, N. L. (author)
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Hamilton, J. F. (author)
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- Bergström, Robert (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg,Sveriges meteorologiska och hydrologiska institut (SMHI),Swedish Meteorological and Hydrological Institute (SMHI)
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Di Marco, C. (author)
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Nemitz, E. (author)
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Mackenzie, I. A. (author)
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Kuenen, J. J. P. (author)
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Green, D. C. (author)
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Reis, S. (author)
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Heal, M. R. (author)
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(creator_code:org_t)
- 2016-05-27
- 2016
- English.
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In: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 16:10, s. 6453-6473
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Abstract
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- We present high-resolution (5aEuro-kmaEuro-aEuro parts per thousand x aEuro-5aEuro-km) atmospheric chemical transport model (ACTM) simulations of the impact of newly estimated traffic-related emissions on secondary organic aerosol (SOA) formation over the UK for 2012. Our simulations include additional diesel-related intermediate-volatility organic compound (IVOC) emissions derived directly from comprehensive field measurements at an urban background site in London during the 2012 Clean Air for London (ClearfLo) campaign. Our IVOC emissions are added proportionally to VOC emissions, as opposed to proportionally to primary organic aerosol (POA) as has been done by previous ACTM studies seeking to simulate the effects of these missing emissions. Modelled concentrations are evaluated against hourly and daily measurements of organic aerosol (OA) components derived from aerosol mass spectrometer (AMS) measurements also made during the ClearfLo campaign at three sites in the London area. According to the model simulations, diesel-related IVOCs can explain on average aEuro parts per thousand aEuro-30aEuro-% of the annual SOA in and around London. Furthermore, the 90th percentile of modelled daily SOA concentrations for the whole year is 3.8aEuro-A mu gaEuro-m(-3), constituting a notable addition to total particulate matter. More measurements of these precursors (currently not included in official emissions inventories) is recommended. During the period of concurrent measurements, SOA concentrations at the Detling rural background location east of London were greater than at the central London location. The model shows that this was caused by an intense pollution plume with a strong gradient of imported SOA passing over the rural location. This demonstrates the value of modelling for supporting the interpretation of measurements taken at different sites or for short durations.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- basis-set approach
- chemical-transport model
- positive matrix
- factorization
- mass-spectrometry
- carbonaceous aerosol
- megapoli summer
- united-states
- europe
- semivolatile
- atmosphere
- Meteorology & Atmospheric Sciences
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ots, R.
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Young, D. E.
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Vieno, M.
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Xu, L.
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Dunmore, R. E.
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Allan, J. D.
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show more...
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Coe, H.
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Williams, L. R.
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Herndon, S. C.
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Ng, N. L.
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Hamilton, J. F.
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Bergström, Rober ...
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Di Marco, C.
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Nemitz, E.
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Mackenzie, I. A.
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Kuenen, J. J. P.
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Green, D. C.
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Reis, S.
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Heal, M. R.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Environmental Sc ...
- Articles in the publication
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Atmospheric Chem ...
- By the university
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University of Gothenburg
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Chalmers University of Technology