Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1996-09-01 |
タイトル |
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タイトル |
LASER HETERODYNE SPECTROMETER OBSERVATIONS OF STRATOSPHERIC O_3,N_2O, HNO_3 AND CH_4 AT SYOWA STATION, ANTARCTICA |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00003945 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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ABSTRACT |
論文名よみ |
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その他のタイトル |
LASER HETERODYNE SPECTROMETER OBSERVATIONS OF STRATOSPHERIC O_3,N_2O, HNO_3 AND CH_4 AT SYOWA STATION, ANTARCTICA |
著者名よみ |
コイデ, ミチヒロ
タグチ, マコト
フクニシ, ヒロシ
オカノ, ショウイチ
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著者名(英) |
KOIDE, Michihiro
TAGUCHI, Makoto
FUKUNISHI, Hiroshi
OKANO, Shoichi
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著者所属(英) |
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en |
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Department of Astrophysics and Geophysics, Tohoku University |
著者所属(英) |
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en |
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Department of Astrophysics and Geophysics, Tohoku University |
著者所属(英) |
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en |
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Department of Astrophysics and Geophysics, Tohoku University |
著者所属(英) |
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en |
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National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Using a newly developed laser heterodyne spectrometer, we observed infrared absorption spectra of atmospheric ozone, methane, nitrous oxide, and nitric acid at Syowa Station (69.0°S, 39.6°E) in the austral spring and summer season of 1994. This spectrometer has an extremely high spectral resolution of 0.0013(cm)^<-1> and a signal-to-noise ratio of 500 for 10-min scan time. Four tunable diode lasers operating at liquid nitrogen temperature are set in the spectrometer. By choosing a particular laser as a local oscillator, we can select the wavenumber region suitable for each spectral line. The selected wavenumber regions are around 1104(cm)^<-1>, 1181(cm)^<-1>, 904(cm)^<-1> and 1223(cm)^<-1> for O_3,N_2O, HNO_3 and CH_4,respectively. The observations were carried out as part of the 35th Japanese Antarctic Research Expedition program. Since the spectrometer uses the sun as the light source, observations began at the end of August 1994,and continued until January 1995. To investigate the growing phase of the Antarctic ozone hole in detail, we carried out intensive observations of ozone absorption spectra in early spring. From November 1994,we carried out mainly observations of methane absorption spectra. Absorption spectra of nitrous oxide and nitric acid were taken intermittently from September 1994 to January 1995. From the ozone absorption spectra obtained in early spring, the height profiles of ozone were retrieved at intervals of every ten minutes. These profiles showed extremely low ozone concentration in the altitude range of 15-20km, which is a typical feature of the ozone hole. Furthermore, these profiles suggested the existence of rapid variations of ozone concentration in the altitude range of 20-30km. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10756213 |
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
巻 10,
p. 160,
発行日 1996-09
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出版者 |
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出版者 |
National Institute of Polar Research |