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| Titel |
Measurements of volatile organic compounds in the middle of Central East China during Mount Tai Experiment 2006 (MTX2006): observation of regional background and impact of biomass burning |
| VerfasserIn |
J. Suthawaree, S. Kato, K. Okuzawa, Y. Kanaya, P. Pochanart, H. Akimoto, Z. Wang, Y. Kajii |
| 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. 3 ; Nr. 10, no. 3 (2010-02-05), S.1269-1285 |
| Datensatznummer |
250008043
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| Publikation (Nr.) |
 copernicus.org/acp-10-1269-2010.pdf |
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| Zusammenfassung |
| The measurement of volatile organic compounds (VOCs) was carried out at the
summit of Mount Tai, located in the center of the Central East China (CEC)
region, in June 2006 as part of the Mount Tai Experiment 2006 (MTX2006),
which focused on the ozone and aerosol chemistry in the region. Temporal
variations of simple VOCs between 2 June and 28 June revealed the
characteristics of an aged air mass with minimum local influence. A
comparison of VOCs observed at Mount Tai with other Chinese sites revealed
relatively similar VOC levels to remote sites and, as expected, a lower
level compared to more polluted sites. However, relatively high acetylene
and benzene levels at Mount Tai were evidently indicated from comparison
with normalized VOC profile by ethane suggested for Beijing. Owing to a
shift in boundary layer height, we observed considerable differences between
daytime and nighttime VOC mixing ratios. This suggests that the site
potentially has a very useful characteristic of being able to measure
regional polluted air and the free troposphere regional background air
quality. Influence of emissions from biomass burning in the region was
evidently found to be extensive during the first half of the campaign
(2–15 June), using fire spot data coupling with backward trajectory analysis.
Agricultural residue burning was suggested as the primary source of
emissions elucidated by the slope of the correlation plot between CH3Cl
and CO obtained during the first half of the campaign. |
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