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Proceedings Paper

Moon as infrared light source for the monitoring of stratospheric trace gas concentration during the polar night
Author(s): Justus Notholt; Otto Schrems
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Paper Abstract

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.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166746
Show Author Affiliations
Justus Notholt, Alfred Wegener Institute fuer Polar und Meeresforschung (Germany)
Otto Schrems, Alfred Wegener Institute fuer Polar und Meeresforschung (Germany)


Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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