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| Titel |
Pollution events observed during CARIBIC flights in the upper troposphere between South China and the Philippines |
| VerfasserIn |
S. C. Lai, A. K. Baker, T. J. Schuck, P. Velthoven, D. E. Oram, A. Zahn, M. Hermann, A. Weigelt, F. Slemr, C. A. M. Brenninkmeijer, H. Ziereis |
| 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 ; 10, no. 4 ; Nr. 10, no. 4 (2010-02-15), S.1649-1660 |
| Datensatznummer |
250008108
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| Publikation (Nr.) |
 copernicus.org/acp-10-1649-2010.pdf |
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| Zusammenfassung |
| A strong pollution episode in the upper troposphere between South China and
the Philippines was observed during CARIBIC flights in April 2007. Five
pollution events were observed, where enhancements in aerosol and trace gas
concentrations including CO, CO2, CH4, non-methane hydrocarbons
(NMHCs) and halocarbons were observed along the flight tracks during four
sequential flights. The importance of the contribution of biomass/biofuel
burning was investigated using chemical tracers, emission factor analysis,
back-trajectory analysis and satellite images. The Indochinese peninsula was
identified as the probable source region of biomass/biofuel burning.
However, enhancements in the urban/industrial tracer C2Cl4 during
the events also indicate a substantial contribution from urban anthropogenic
emissions. An estimation of the contribution of fossil fuel versus
biomass/biofuel to the CO enhancement was made, indicating a biomass/biofuel
burning contribution of ~54 to ~92% of the observed CO
enhancements. Biomass/biofuel burning was found to be the most important
source category during the sampling period. |
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