Measurements of total hydroxyl radical reactivity during CABINEX 2009 &ndash; Part 1: Field measurements

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题名:	Measurements of total hydroxyl radical reactivity during CABINEX 2009 –Part 1: Field measurements
作者:	谷邁世;Hansen, R. F.;Griffith, S. M.;Dusanter, S.;Rickly, P. S.;Stevens, P. S.;Bertman, S. B.;Carroll, M. A.;Erickson, M. H.;Flynn, J. H.;Grossberg, N.;Jobson, B. T.;Lefer, B. L.;Wallace, H. W.
贡献者:	地球科學學院大氣科學學系
关键词:	Hydroxides;Measurement;Ocean, Atmosphere;Sciences of the Universe;Volatile organic compounds
日期:	2014-03-21
上传时间:	2026-04-21 13:56:00 (UTC+8)
出版者:	European Geosciences Union;Copernicus GmbH
摘要:	摘要： Abstract. Total hydroxyl radical (OH) reactivity was measured at the PROPHET (Program for Research on Oxidants: PHotochemistry, Emissions, and Transport) forested field site in northern Michigan during the 2009 Community Atmosphere–Biosphere INteraction EXperiment (CABINEX). OH reactivity measurements were made with a turbulent-flow reactor instrument at three heights from the forest floor above (21 and 31 m) and below (6 m) the canopy at three different time periods during the CABINEX campaign. In addition to total OH reactivity measurements, collocated measurements of volatile organic compounds (VOCs), inorganic species, and ambient temperature were made at the different heights. These ancillary measurements were used to calculate the total OH reactivity, which was then compared to the measured values. Discrepancies between the measured and calculated OH reactivity, on the order of 1–24 s−1, were observed during the daytime above the canopy at the 21 and 31 m heights, as previously reported for this site. The measured OH reactivity below the canopy during the daytime was generally lower than that observed above the canopy. Closer analysis of the measurements of OH reactivity and trace gases suggests that the missing OH reactivity could come from oxidation products of VOCs. These results suggest that additional unmeasured trace gases, likely oxidation products, are needed to fully account for the OH reactivity measured during CABINEX. 出版者： Copernicus GmbH 出版日期： 2014-03-21 出處： Atmospheric Chemistry and Physics, 2014-03, Vol.14 (6), p.2923-2937 資源來源： Agricultural & Environmental Science Collection 版權： COPYRIGHT 2014 Copernicus GmbH 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISSN: 1680-7324 識別號： ISSN: 1680-7316 識別號： EISSN: 1680-7324 識別號： DOI: 10.5194/acp-14-2923-2014
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