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Proceedings Paper

Ground-based remote sensing of atmospheric O3, N2O, HNO3, and CH4 with a tunable diode laser heterodyne spectrometer at Syowa Station, Antarctica
Author(s): Michihiro Koide; Makoto Taguchi; Hiroshi Fukunishi; Shoichi Okano
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Paper Abstract

Using the third version of tunable diode laser heterodyne spectrometers developed by the Tohoku University optical group, infrared absorption spectra of atmospheric O3, N2O, CH4, and HNO3 were observed at Syowa station from August 1994 to January 1995. This portable spectrometer has an ultra high spectral resolution of 0.0013 cm-1 and a signal-to-noise ratio of 500 for 10-min scan time. From ozone absorption spectra obtained in early spring, the height profiles of ozone concentration up to 30 km were retrieved at intervals of ten minutes. These profiles showed extremely low ozone concentration in the altitude range of 15-20 km, which is a typical feature of the antarctic ozone hole. Furthermore, these profiles demonstrated the existence of rapid variations of ozone concentration in the altitude range of 20-30 km. From the potential vorticity analysis using the objective analysis data provided by the Japanese meteorological agency, it was concluded that these variations wee caused by a passage of westward traveling waves produced at the polar vortex boundary.

Paper Details

Date Published: 31 October 1996
PDF: 11 pages
Proc. SPIE 2830, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II, (31 October 1996); doi: 10.1117/12.256138
Show Author Affiliations
Michihiro Koide, Tohoku Univ. (Japan)
Makoto Taguchi, Tohoku Univ. (Japan)
Hiroshi Fukunishi, Tohoku Univ. (Japan)
Shoichi Okano, National Institute of Polar Research (Japan)

Published in SPIE Proceedings Vol. 2830:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II
Paul B. Hays; Jinxue Wang, Editor(s)

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