Ground-based remote sensing of atmospheric O3, N2O, HNO3, and CH4 with a tunable diode laser heterodyne spectrometer at Syowa Station, Antarctica

Michihiro Koide; Makoto Taguchi; Hiroshi Fukunishi; Shoichi Okano

doi:10.1117/12.256138

31 October 1996 Ground-based remote sensing of atmospheric O₃, N₂O, HNO₃, and CH₄ with a tunable diode laser heterodyne spectrometer at Syowa Station, Antarctica

Michihiro Koide, Makoto Taguchi, Hiroshi Fukunishi, Shoichi Okano

Author Affiliations +

Proceedings Volume 2830, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II; (1996) https://doi.org/10.1117/12.256138
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

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Michihiro Koide, Makoto Taguchi, Hiroshi Fukunishi, and Shoichi Okano "Ground-based remote sensing of atmospheric O₃, N₂O, HNO₃, and CH₄ with a tunable diode laser heterodyne spectrometer at Syowa Station, Antarctica", Proc. SPIE 2830, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II, (31 October 1996); https://doi.org/10.1117/12.256138

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