Physics
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2089..156n&link_type=abstract
Proc. SPIE Vol. 2089, p. 156-157, 9th International Conference on Fourier Transform Spectroscopy, John E. Bertie; Hal Wieser; Ed
Physics
Scientific paper
In winter 1992/93 we performed ground-based FTIR measurements in the Arctic (79 degree(s)N, 12 degree(s)E) to derive the column densities of several trace gases in the stratosphere. For the first time the moon was used as an infrared light source during the polar night. Due to the absorption of sunlight by the moon, the moon acts as an infrared emitter itself in the wavenumber region up to 1000 cm-1. This allows us to use the MCT detector for the wavenumber region 700 - 1000 cm-1 in addition to the InSb detector covering 2000 - 4000 cm-1. Spectra could be recorded at 0.01 cm-1 or 0.02 cm-1 resolution. In a first step column densities of N2O, CH4, HF, HCl, O3, NO2, HNO3 and ClONO2 have been obtained.
Notholt Justus
Schrems Otto
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