Articles | Volume 7, issue 21
Atmos. Chem. Phys., 7, 5489–5499, 2007

Special issue: MANTRA - Results from the Middle Atmosphere Nitrogen TRend...

Atmos. Chem. Phys., 7, 5489–5499, 2007

  01 Nov 2007

01 Nov 2007

Intercomparison of ground-based ozone and NO2 measurements during the MANTRA 2004 campaign

A. Fraser1, P. F. Bernath2,3, R. D. Blatherwick4, J. R. Drummond1,5, P. F. Fogal1,4, D. Fu2, F. Goutail6, T. E. Kerzenmacher1, C. T. McElroy7, C. Midwinter1, J. R. Olson4, K. Strong1, K. A. Walker1,2, D. Wunch1,8, and I. J. Young2 A. Fraser et al.
  • 1Department of Physics, University of Toronto, Toronto, Canada
  • 2Department of Chemistry, University of Waterloo, Waterloo, Canada
  • 3Department of Chemistry, University of York, Heslington, UK
  • 4Department of Physics and Astronomy, University of Denver, Denver, USA
  • 5Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada
  • 6Service d'Aéronomie du Centre Nationale de la Recherche Scientifique, Verrières le Buisson, France
  • 7Environment Canada, Downsview, Canada
  • 8California Institute of Technology, Pasadena, USA

Abstract. The MANTRA (Middle Atmosphere Nitrogen TRend Assessment) 2004 campaign took place in Vanscoy, Saskatchewan, Canada (52° N, 107° W) from 3 August to 15 September, 2004. In support of the main balloon launch, a suite of five zenith-sky and direct-Sun-viewing UV-visible ground-based spectrometers was deployed, primarily measuring ozone and NO2 total columns. Three Fourier transform spectrometers (FTSs) that were part of the balloon payload also performed ground-based measurements of several species, including ozone. Ground-based measurements of ozone and NO2 differential slant column densities from the zenith-viewing UV-visible instruments are presented herein. They are found to partially agree within NDACC (Network for the Detection of Atmospheric Composition Change) standards for instruments certified for process studies and satellite validation. Vertical column densities of ozone from the zenith-sky UV-visible instruments, the FTSs, a Brewer spectrophotometer, and ozonesondes are compared, and found to agree within the combined error estimates of the instruments (15%). NO2 vertical column densities from two of the UV-visible instruments are compared, and are also found to agree within combined error (15%).

Final-revised paper