Publikation:
Source apportionment and impact of long-range transport on carbonaceous aerosol particles in central Germany during HCCT-2010

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dc.contributor.authorPoulain, Laurent
dc.contributor.authorBirmili, Wolfram
dc.contributor.authorFahlbusch, Benjamin
dc.contributor.authorSpindler, Gerald
dc.date.accessioned2024-06-16T13:47:32Z
dc.date.available2024-06-16T13:47:32Z
dc.date.issued2021
dc.description.abstractThe identification of different sources of the carbonaceous aerosol (organics and black carbon) was investigated at a mountain forest site located in central Germany from September to October 2010 to characterize incoming air masses during the Hill Cap Cloud Thuringia 2010 (HCCT-2010) experiment. The near-PM1 chemical composition, as measured by a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS), was dominated by organic aerosol (OA; 41%) followed by sulfate (19%) and nitrate (18%). Source apportionment of the OA fraction was performed using the multilinear engine (ME-2) approach, resulting in the identification of the following five factors: hydrocarbon-like OA (HOA; 3% of OA mass), biomass burning OA (BBOA; 13%), semi-volatile-like OA (SV-OOA; 19%), and two oxygenated OA (OOA) factors. The more oxidized OOA (MO-OOA, 28%) was interpreted as being influenced by aged, polluted continental air masses, whereas the less oxidized OOA (LO-OOA, 37%) was found to be more linked to aged biogenic sources. Equivalent black carbon (eBC), measured by a multi-angle absorption photometer (MAAP) represented 10% of the total particulate matter (PM). The eBC was clearly associated with HOA, BBOA, and MO-OOA factors (all together R2=0.83). Therefore, eBC's contribution to each factor was achieved using a multi-linear regression model. More than half of the eBC (52%) was associated with long-range transport (i.e., MO-OOA), whereas liquid fuel eBC (35%) and biomass burning eBC (13%) were associated with local emissions, leading to a complete apportionment of the carbonaceous aerosol. The separation between local and transported eBC was well supported by the mass size distribution of elemental carbon (EC) from Berner impactor samples. Air masses with the strongest marine influence, based on back trajectory analysis, corresponded with a low particle mass concentration (6.4-7.5 (my)g m-3) and organic fraction (~30%). However, they also had the largest contribution of primary OA (HOA ~ 4% and BBOA 15%-20%), which was associated with local emissions. Continental air masses had the highest mass concentration (11.4-12.6 (my)g m-3), and a larger fraction of oxygenated OA (~45%) indicated highly processed OA. The present results emphasize the key role played by long-range transport processes not only in the OA fraction but also in the eBC mass concentration and the importance of improving our knowledge on the identification of eBC sources. © Author(s) 202en
dc.format.extent1 Onlineresource (pages 3667-3684)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-1114
dc.identifier.urihttps://openumwelt.de/handle/123456789/3618
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleSource apportionment and impact of long-range transport on carbonaceous aerosol particles in central Germany during HCCT-2010
dc.title.alternativeSource apportionment and impact of long-range transport on carbonaceous aerosol particles in central Germany during HCCT-2010
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleAtmospheric Chemistry & Physics
local.bibliographicCitation.originalDOI10.5194/acp-21-3667-2021
local.bibliographicCitation.volume21 (2021), Heft 5
local.collectionAufsätze
local.contributor.authorId02186968
local.contributor.authorId02186969
local.contributor.authorId02185415
local.identifier.catalogId02482089
local.ingest.leader06060naa a2200000uu 4500
local.jointTitleSOURCE APPORTIONMENT AND IMPACT OF LONGRANGE TRANSPORT ON CARBONACEOUS AEROSOL PARTICLES IN CENTRAL GERMANY DURING HCCT2010
local.reviewtrue
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local.staffPublicationtrue
relation.isAuthorOfPublication530a7f84-0626-465c-8eb4-c1bb5e4b1ca6
relation.isAuthorOfPublication.latestForDiscovery530a7f84-0626-465c-8eb4-c1bb5e4b1ca6
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