Horizontal variations of gravity wave activities in the lower stratosphere over Japan: A case study in the Baiu season 1991
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- Ogino Shin-Ya
- Radio Atmospheric Science Center, Kyoto University
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- Yamanaka Manabu D.
- Graduate School of Science and Technology, Kobe University
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- Shibagaki Yoshiaki
- Radio Atmospheric Science Center, Kyoto University
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- Shimomai Toyoshi
- Radio Atmospheric Science Center, Kyoto University
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- Fukao Shoichiro
- Radio Atmospheric Science Center, Kyoto University
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Vertical wavenumber spectra are analyzed by using temperature, zonal wind and meridional wind data obtained with MU radar and radiosondes at the MU observatory in Shigaraki and with operational rawinsondes at five stations over Japan. The temperature and meridional wind spectral power densities of the dominant gravity wave increase with a decrease of latitude, whereas the zonal wind spectral power seems to have a maximum near the tropopausal jet stream axis. An analysis technique to estimate a characteristic value of intrinsic frequency from the wind and temperature vertical-wavenumber spectra is proposed. The different meridional distributions of spectral power densities for temperature, zonal wind and meridional wind possibly can be explained by a latitudinal distribution of the characteristic intrinsic frequency.
収録刊行物
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- Earth, Planets and Space
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Earth, Planets and Space 51 (2), 107-113, 1999
地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会
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詳細情報 詳細情報について
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- CRID
- 1390001206509035648
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- NII論文ID
- 10003737272
- 130003955983
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- NII書誌ID
- AA11211921
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- ISSN
- 18805981
- 13438832
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- NDL書誌ID
- 4681737
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
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