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| Titel |
Statistical analysis of anthropogenic non-methane VOC variability at a European background location (Jungfraujoch, Switzerland) |
| VerfasserIn |
V. A. Lanz, S. Henne, J. Staehelin, C. Hueglin, M. K. Vollmer, M. Steinbacher, B. Buchmann, S. Reimann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 10 ; Nr. 9, no. 10 (2009-05-28), S.3445-3459 |
| Datensatznummer |
250007313
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| Publikation (Nr.) |
 copernicus.org/acp-9-3445-2009.pdf |
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| Zusammenfassung |
| In-situ measurements of 7 volatile hydrocarbons, CxHy, and 3 chlorinated organic compounds, CxHyClz, were performed at Jungfraujoch (Switzerland) during
eight years (2000–2007). The analysis of 4-h resolved
non-methane volatile organic compounds (NMVOCs) was achieved by
using gas-chromatography coupled with mass spectrometry (GC-MS).
Variabilities in the NMVOC time series dataset were modeled by
factor analysis (positive matrix factorization, PMF). Four factors
defined the solution space and could be related to NMVOC sources and
atmospheric processes. In order to facilitate factor interpretations
the retrieved contributions were compared with independent
measurements, such as trace gases (NOx, CO, and CH4)
and back trajectories. The most dominant factor (accounting on
average for ~42% of the total mixing ratio of the considered
NMVOCs) was found to be most active in winter, co-varying with CO
and CH4 and could be related to aged combustive emissions as
well as natural gas distribution. The other three factors represent
both industrial and evaporative sources. Trajectory statistics
suggest that the most influential anthropogenic NMVOC sources for
Jungfraujoch are located in Eastern Europe, but the Po Valley has
been identified as a potential source region for specific industrial
sources as well. Aging of the arriving NMVOCs, the derived factors
as well as limitations of the methods are discussed. This is the
first report of a PMF application on NMVOC data from a background
mountain site. |
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