Abstract
Tropospheric hydroxyl radical (OH) concentrations were measured by laser-induced fluorescence (LIF) during the POPCORN field campaign in August 1994 at a rural site in the North East of Germany. Ambient air spectra were recorded by tuning the laser wavelength over a spectral region covering the Q11(3), Q21 (3), and P11(1) rotational transitions of the (0–0) band in the A-X system of OH around 308 nm. The observed spectra clearly identify the OH radical in the atmosphere. Besides the OH absorption lines there was no sign of any other narrow-band spectral structure nearby demonstrating the high specificity of the method. For OH measurements with a typical time resolution of 60–100 seconds per data point the laser wavelength was tuned repetitively over small spectral intervals covering the peak position of the P11(1) OH-line and background positions. A total of 2300 measurements were recorded including diurnal cycles of OH with more than 300 data points. The OH as well as the LIF background signal data will be presented. In a first analysis the background signal will be characterized and the correlation between OH and the ozone photolysis frequency will be derived.
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References
Aschmutat, U., Hessling, M., Holland, F., and Hofzumahaus, A., 1994: A tunable source of Hydroxyl (OH) and Hydroperoxy (H02) radicals: In the range between 106 and 109 cm-3, in G. Angeletti and G. Restelli (eds), Physico-Chemical Behaviour of Atmospheric Pollutants 2, 811–816, Proc. EUR 15609.
Birge, R. T., 1932: The calculation of errors by the method of least squares, Phys. Review 40, 207227.
Brandenburger, U., Brauers, T., Dorn, H.-P., Hausmann, M., and Ehhalt, D. H., 1998: In-situ measurement of tropospheric hydroxyl radicals by folded long-path laser absorption during the field campaign POPCORN in 1994, J. Atmos. Chem. 31, 181–204.
Brauers, T., Dorn, H.-P., Koch, H., Kraus, A. B., and Plass-Duelmer, C., 1998: Meteorological aspects, ozone, and solar radiation measurements during POPCORN 1994, J. Atmos. Chem. 31, 33–52.
Brune, W. H., Stevens, P. S., and Mather, J. H., 1995: Measuring OH and HO2 in the Troposphere by Laser Induced Fluorescence at Low Pressure, J. Atmos. Sciences 52, 3328–3336.
Cantrell, C. A., Zimmer, A., and Tyndall, G. S., 1997: Absorption Cross Sections for Water Vapor from 183 to 193 nm, Geophys. Res. Lett. 24, 2195–2198.
DeMore, W. B., Sander, S. P., Golden, D. M., Hampson, R. F., Kurylo, M. J., Howard, C. J., Ravishankara, A. R., Kolb, C. E., and Molina, M. J., 1994: Chemical kinetics and photochemical data for use in stratospheric modeling, Evaluation Number 11 (JPL 94–26 ), JPL, Pasadena.
Gränicher, W. H. H., 1996: Messung beendet — was nun? vdf Hochsch.-Verl. an der ETH Zürich, Zürich, Teubner, Stuttgart.
Hard, T. M., George, L. A., and O’Brien, R. J., 1995: FAGE Determination of Tropospheric HO and HO2, J. Atmos. Sciences 52, 3354–3372.
Hofzumahaus, A., Aschmutat, U., Hessling, M., Holland, F., and Ehhalt, D. H., 1996: The measurement of tropospheric OH radicals by laser-induced fluorescence spectroscopy during the POPCORN field campaign, Geophys. Res. Lett. 23, 2541–2544.
Hofzumahaus, A., Aschmutat, U., Brandenburger, U., Brauers, T., Dorn, H.-P., Hausmann, M., Hessling, M., Holland, F., Plass-Dülmer, C., and Ehhalt, D. H., 1998: Intercomparison of tropospheric OH measurements by different laser techniques during the POPCORN campaign 1994, J. Atmos. Chem. 31, 227–246.
Hofzumahaus, A., Brauers, T., Aschmutat, U., Brandenburger, U., Dorn, H.-P., Hausmann, M., Hessling, M., Holland, F., Plass-Dülmer, C., and Ehhalt, D. H., 1997: Reply on comment by Lanzendorf et al., Geophys. Res. Lett. 24, 3039–3040.
Holland, F., Hessling, M., and Hofzumahaus, A., 1995: In-situ measurement of tropospheric OH radicals by laser-induced fluorescence — a description of the KFA instrument, J. Atmos. Sciences 52, 3393–3401.
Kraus, A. and Hofzumahaus, A., 1998: Field measurements of atmospheric photolysis frequencies for 03, NO2, HCHO, CH3CHO, H2O2 and HONO by uv spectroradiometry, J. Atmos. Chem. 31, 161–180.
Lanzendorf, E. J., Hanisco, T. E, Donahue, N. M., and Wennberg, R. O., 1997: Comment on: `The measurement of tropospheric OH radicals by laser-induced fluorescence spectroscopy during the POPCORN field campaign’ by Hofzumahaus et al. and Intercomparison of tropospheric OH radical measurements by multiple folded lomg-path laser absorption and laser induced fluorescence’ by Brauers., Geophys. Res. Lett. 24, 3037–3038.
Stevens, R. S., Mather, J. H., and Brune, W. H., 1994: Measurement of tropospheric OH and HO2 by laser-induced fluorescence at low pressure, J. Geophys. Res. 99, 3543–3557.
Washida, N., Mori, Y., and Tanaka, I., 1971: Quantum yield of ozone formation from photolysis of the oxygen molecule at 1849 and 1931 A, J. Chem. Phys. 54, 1119–1122.
Yoshino, K., Esmond, J. R., Parkinson, W. H., Ito, K., and Matsui, T., 1996: Absorption cross section measurements of water vapor in the wavelength region 120 to 188 nm, Chem. Phys. 211, 387–391.
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Holland, F., Aschmutat, U., Heßling, M., Hofzumahaus, A., Ehhalt, D.H. (1998). Highly Time Resolved Measurements of OH during POPCORN Using Laser-Induced Fluorescence Spectroscopy. In: Rudolph, J., Koppmann, R. (eds) Atmospheric Measurements during POPCORN — Characterisation of the Photochemistry over a Rural Area. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0813-5_10
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DOI: https://doi.org/10.1007/978-94-017-0813-5_10
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