Preprints
https://doi.org/10.5194/amtd-2-343-2009
https://doi.org/10.5194/amtd-2-343-2009

  16 Feb 2009

16 Feb 2009

Review status: this preprint was under review for the journal AMT but the revision was not accepted.

Springtime Arctic ground-based spectroscopy of O3 and related trace gases at Eureka, Canada – Part 1: Evaluation of the analysis method and comparison with infrared measurements

E. Farahani1,*, K. Strong1, R. L. Mittermeier2, H. Fast2, M. Van Roozendael3, and C. Fayt3 E. Farahani et al.
  • 1Department of Physics, University of Toronto, Toronto, Ontario, Canada
  • 2Environment Canada, Toronto, Ontario, Canada
  • 3Belgian Institute for Space Aeronomy (IASB-BIRA), Belgium
  • *now at: SPARC International Project Office, University of Toronto, Toronto, Ontario, Canada

Abstract. For the first time in spring 1999 the ground-based UV-visible zenith-sky measurements of stratospheric gases were performed at Environment Canada's Arctic Stratospheric Ozone Observatory (ASTRO) located at Eureka, Nunavut, Canada (80.05° N, 86.42° W, 610 m a.s.l.). The University of Toronto UV-visible ground-based spectrometer (UT-GBS) has been deployed for nine years afterwards at Eureka to measure ozone and NO2 total columns by using sunlight scattered from the zenith sky during spring, when the conditions leading to polar ozone depletion develop. During spring 2000, elevated OClO slant column densities were also measured for the first time. First dedicated analysis of UT-GBS measurements applying two independent differential optical absorption spectroscopy algorithms was performed on spectra recorded during spring 2000. The resulting ozone and NO2 total columns agreed to 4% and 5% or better, respectively. Also, first four years of UT-GBS results (1999–2003) were compared with those made by ozonesondes and by the Meteorogical Service of Canada Fourier transform infrared spectrometer (MSC FTS) at ASTRO, which has been operated by Canada's Department of Environment for measuring the total columns of several stratospheric gases. The comparison of UT-GBS and MSC FTS ozone total columns proved to be better than 5% for the periods when both instruments were viewing similar air masses.

E. Farahani et al.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

E. Farahani et al.

E. Farahani et al.

Viewed

Total article views: 923 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
499 366 58 923 56 59
  • HTML: 499
  • PDF: 366
  • XML: 58
  • Total: 923
  • BibTeX: 56
  • EndNote: 59
Views and downloads (calculated since 01 Feb 2013)
Cumulative views and downloads (calculated since 01 Feb 2013)

Cited

Saved

Latest update: 17 Oct 2021