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Light-absorbing car...
Light-absorbing carbon in Europe - measurement and modelling, with a focus on residential wood combustion emissions
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- Genberg, Johan (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Areskoug, Hans (author)
- Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM)
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- Simpson, David, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Swietlicki, Erik (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Areskoug, H. (author)
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Beddows, D. (author)
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Ceburnis, D. (author)
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Fiebig, M. (author)
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- Hansson, Hans-Christen (author)
- Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM)
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Harrison, R. M. (author)
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Jennings, S. G. (author)
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Saarikoski, S. (author)
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Spindler, G. (author)
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Visschedijk, A. J. H. (author)
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Wiedensohler, A. (author)
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Yttri, K. E. (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
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(creator_code:org_t)
- 2013-09-03
- 2013
- English.
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In: Atmospheric Chemistry And Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 13:17, s. 8719-8738
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Abstract
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- The atmospheric concentration of elemental carbon (EC) in Europe during the six-year period 2005-2010 has been simulated with the EMEP MSC-W model. The model bias compared to EC measurements was less than 20% for most of the examined sites. The model results suggest that fossil fuel combustion is the dominant source of EC in most of Europe but that there are important contributions also from residential wood burning during the cold seasons and, during certain episodes, also from open biomass burning (wildfires and agricultural fires). The modelled contributions from open biomass fires to ground level concentrations of EC were small at the sites included in the present study, <3% of the long-term average of EC in PM10. The modelling of this EC source is subject to many uncertainties, and it was likely underestimated for some episodes. EC measurements and modelled EC were also compared to optical measurements of black carbon (BC). The relationships between EC and BC (as given by mass absorption cross section, MAC, values) differed widely between the sites, and the correlation between observed EC and BC is sometimes poor, making it difficult to compare results using the two techniques and limiting the comparability of BC measurements to model EC results. A new bottom-up emission inventory for carbonaceous aerosol from residential wood combustion has been applied. For some countries the new inventory has substantially different EC emissions compared to earlier estimates. For northern Europe the most significant changes are much lower emissions in Norway and higher emissions in neighbouring Sweden and Finland. For Norway and Sweden, comparisons to source-apportionment data from winter campaigns indicate that the new inventory may improve model-calculated EC from wood burning. Finally, three different model setups were tested with variable atmospheric lifetimes of EC in order to evaluate the model sensitivity to the assumptions regarding hygroscopicity and atmospheric ageing of EC. The standard ageing scheme leads to a rapid transformation of the emitted hydrophobic EC to hygroscopic particles, and generates similar results when assuming that all EC is aged at the point of emission. Assuming hydrophobic emissions and no ageing leads to higher EC concentrations. For the more remote sites, the observed EC concentration was in between the modelled EC using standard ageing and the scenario treating EC as hydrophobic. This could indicate too-rapid EC ageing in the model in relatively clean parts of the atmosphere.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- SIZE-SEGREGATED CHARACTERIZATION
- BLACK-CARBON
- ELEMENTAL CARBON
- ORGANIC-CARBON
- AIR-POLLUTION
- ABSORPTION-COEFFICIENT
- SOURCE APPORTIONMENT
- PARTICULATE MATTER
- REACTIVE NITROGEN
- SOOT PARTICLES
- SIZE-SEGREGATED CHARACTERIZATION
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Genberg, Johan
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Areskoug, Hans
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Simpson, David, ...
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Swietlicki, Erik
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Areskoug, H.
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Beddows, D.
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show more...
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Ceburnis, D.
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Fiebig, M.
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Hansson, Hans-Ch ...
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Harrison, R. M.
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Jennings, S. G.
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Saarikoski, S.
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Spindler, G.
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Visschedijk, A. ...
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Wiedensohler, A.
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Yttri, K. E.
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Bergström, Rober ...
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- About the subject
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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 Physical Science ...
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and Subatomic Physic ...
- 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
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Lund University
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Stockholm University