Column amounts of trace gases measured by ground-based FTIR spectroscopy during the EASOE campaign

Thomas Blumenstock; Herbert Fischer; L. Gerhardt; P. Thomas; Olaf Trieschmann; A. Wegner

doi:10.1117/12.166706

31 January 1994 Column amounts of trace gases measured by ground-based FTIR spectroscopy during the EASOE campaign

Thomas Blumenstock, Herbert Fischer, L. Gerhardt, P. Thomas, Olaf Trieschmann, A. Wegner

Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166706
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada

Abstract

To investigate the ozone changes and their causes in the Arctic our FTIR spectrometers were operated in winter 1991/92 during the European Arctic stratospheric ozone experiment (EASOE): one at Esrange, Sweden, and the other one at Sondre Stromfjord, Greenland. The evaluation of the recorded spectra yields zenith column amounts (ZCA) of several trace gases like H₂O, HDO, CH₄, N₂O, CFC-11, -12, -22, O₃, HNO₃, ClONO₂, HCl and HF. This paper focuses on HCl, HF and ClONO₂. The ratio HCl to HF is rather low inside the vortex indicating a perturbed chemistry. ClONO₂ is increasing towards the end of the winter and is very high in the late polar vortex.

Citation Download Citation

Thomas Blumenstock, Herbert Fischer, L. Gerhardt, P. Thomas, Olaf Trieschmann, and A. Wegner "Column amounts of trace gases measured by ground-based FTIR spectroscopy during the EASOE campaign", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); https://doi.org/10.1117/12.166706

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