Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.414 IF 5.414
  • IF 5-year value: 5.958 IF 5-year
    5.958
  • CiteScore value: 9.7 CiteScore
    9.7
  • SNIP value: 1.517 SNIP 1.517
  • IPP value: 5.61 IPP 5.61
  • SJR value: 2.601 SJR 2.601
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 191 Scimago H
    index 191
  • h5-index value: 89 h5-index 89
Preprints
https://doi.org/10.5194/acp-2020-626
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2020-626
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  16 Jul 2020

16 Jul 2020

Review status
This preprint is currently under review for the journal ACP.

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

Laurent Poulain1, Benjamin Fahlbusch1,a, Gerald Spindler1, Konrad Müller1, Dominik van Pinxteren1, Zhijun Wu1,b, Yoshiteru Iinuma1,c, Wolfram Birmili1,d, Alfred Wiedensohler1, and Hartmut Herrmann1 Laurent Poulain et al.
  • 1Leibniz Institut für Troposphärenforschung, (TROPOS), Leipzig, 04318, Germany
  • anow at: Eurofins, Friedrichsdorf, 61381, Germany
  • bnow at: College of Environment Sciences and Engineering, Peking University, Beijing, 100871, China
  • cnow at: Okinawa Institute of Science and Technology Graduate University (OIST), Okinawa, 904-0495, Japan
  • dnow at: Umweltbundesamt (UBA), Berlin, 14195, Germany

Abstract. The 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 an Aerosol Mass Spectrometer (HR-ToF-AMS), was dominated by organics (OA, 41 %), followed by sulfate (19 %) and nitrate (18 %). Source apportionment of the OA fraction was performed using the Multilinear Engine approach (ME-2), resulting in the identification of five factors: Hydrocarbon-like OA (HOA, 3 % of OA mass), biomass burning OA (BBOA, 13 %), semi-volatile-like OA (SVOOA, 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 PM. The eBC was clearly associated with the three factors HOA, BBOA, and MO-OOA (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 µg 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 µg 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 on the OA fraction but also on the eBC mass concentration and the importance of improving our knowledge on the identification of eBC sources.

Laurent Poulain et al.

Interactive discussion

Status: open (until 12 Sep 2020)
Status: open (until 12 Sep 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Laurent Poulain et al.

Laurent Poulain et al.

Viewed

Total article views: 167 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
111 49 7 167 14 4 7
  • HTML: 111
  • PDF: 49
  • XML: 7
  • Total: 167
  • Supplement: 14
  • BibTeX: 4
  • EndNote: 7
Views and downloads (calculated since 16 Jul 2020)
Cumulative views and downloads (calculated since 16 Jul 2020)

Viewed (geographical distribution)

Total article views: 124 (including HTML, PDF, and XML) Thereof 124 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 11 Aug 2020
Publications Copernicus
Download
Short summary
We present results from source apportionment analysis on the carbonaceous aerosol particles including organic aerosol (OA) and equivalent black carbon (eBC) allowing us to distinguish local emissions from long-range transport for OA and eBC sources. By merging online chemical measurements and considering particle number size distribution, the different air masses reaching the sampling place were described and discussed based on their respective chemical composition and size distribution.
We present results from source apportionment analysis on the carbonaceous aerosol particles...
Citation