| Volumes and Issues Contents of Issue 5 |
www.atmos-meas-tech-discuss.net/2/2539/2009/
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
Intercomparison of measurements of NO2 concentrations in the atmosphere simulation chamber SAPHIR during the NO3Comp campaign
1National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Boulder, CO, USA
2Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO, USA
3Department of Chemistry, University of Leicester, Leicester, UK
4Institut für Chemie und Dynamik der Geosphäre 2, Forschungszentrum Jülich GmbH, Jülich, Germany
5Department of Chemistry, University of California Berkeley, Berkeley, CA, USA
6Department of Physics, University College Cork, Cork, Ireland
7Department of Chemistry, University of Cambridge, Cambridge, UK
8Physikalische Chemie/Fachbereich C, Bergische Universität Wuppertal, Wuppertal, Germany
9Department of Chemistry, University College Cork, Cork, Ireland
10Environmental Research Institute, University College Cork, Cork, Ireland
*now at: Institut für Chemie und Dynamik der Geosphäre 2, Forschungszentrum Jülich GmbH, Jülich, Germany
Abstract. NO2 concentrations were measured by various instruments during the NO3Comp campaign at the atmosphere simulation chamber SAPHIR at Forschungszentrum Jülich, Germany, in June 2007. Analytic methods included photolytic conversion with chemiluminescence (PC-CLD), broadband cavity ring-down spectroscopy (BBCRDS), pulsed cavity ring-down spectroscopy (CRDS), incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS), and laser-induced fluorescence (LIF). All broadband absorption spectrometers were optimized for the detection of the main target species of the campaign, NO2, but were also capable of detecting NO2 simultaneously with reduced sensitivity. NO2 mixing ratios in the chamber were within a range characteristic of polluted, urban conditions, with a maximum mixing ratio of approximately 75 ppbv. The overall agreement between measurements of all instruments was excellent. Linear fits of the combined data sets resulted in slopes that differ from unity only within the stated uncertainty of each instrument. Possible interferences from species such as water vapor and ozone were negligible under the experimental conditions.
Discussion Paper (PDF, 7652 KB) Interactive Discussion (Closed, 4 Comments) Final Revised Paper (AMT)
Citation: Fuchs, H., Ball, S. M., Bohn, B., Brauers, T., Cohen, R. C., Dorn, H.-P., Dubé, W. P., Fry, J. L., Häseler, R., Heitmann, U., Jones, R. L., Kleffmann, J., Mentel, T. F., Müsgen, P., Rohrer, F., Rollins, A. W., Ruth, A. A., Kiendler-Scharr, A., Schlosser, E., Shillings, A. J. L., Tillmann, R., Varma, R. M., Venables, D. S., Villena Tapia, G., Wahner, A., Wegener, R., Wooldridge, P. J., and Brown, S. S.: Intercomparison of measurements of NO2 concentrations in the atmosphere simulation chamber SAPHIR during the NO3Comp campaign, Atmos. Meas. Tech. Discuss., 2, 2539-2586, 2009. Bibtex EndNote Reference Manager
