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| Titel |
Ozone production and trace gas correlations during the June 2000 MINATROC intensive measurement campaign at Mt. Cimone |
| VerfasserIn |
H. Fischer, R. Kormann, T. Klüpfel, Ch. Gurk, R. Königstedt, U. Parchatka, J. Mühle, T. S. Rhee, C. A. M. Brenninkmeijer, P. Bonasoni, A. Stohl |
| 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 ; 3, no. 3 ; Nr. 3, no. 3 (2003-06-16), S.725-738 |
| Datensatznummer |
250001043
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| Publikation (Nr.) |
 copernicus.org/acp-3-725-2003.pdf |
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| Zusammenfassung |
| An intensive measurement campaign was performed in June 2000 at the Mt. Cimone station
(44°11' N-10°42' E, 2165 m asl, the highest mountain in the northern Italian Apennines) to study
photochemical ozone production in the lower free troposphere. In general, average mixing
ratios of important trace gases were not very high (121 ± 20 ppbv CO, 0.284
± 0.220 ppbv NOx, 1.15 ± 0.8 ppbv NOy, 58 ± 9 ppbv O3), which indicates a small contribution by local
pollution. Those trace gas levels are representative of continental background air, which is
further supported by the analysis of VOCs (e.g.: C2H6 = (905
± 200) pptv, C3H8 = (268 ±110) pptv, C2H2 = (201
± 102) pptv, C5H8 = (111 ± 124) pptv, benzene = (65
± 33) pptv). Furthermore, significant diurnal variations for a number of trace gases
(O3, CO, NOx, NOy, HCHO) indicate the presence of free tropospheric airmasses at nighttime as a consequence of
local catabatic winds. Average mid-day peroxy radical concentrations at Mt. Cimone are of
the order of 30 pptv. At mean NO concentrations of the order of 40 pptv this gives rise to
significant in situ net O3 production of 0.1-0.3 ppbv/hr. The importance of
O3 production is supported by correlations between O3, CO, NOz, and HCHO, and between HCHO, CO and
NOy. |
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