NOTES AND CORRESPONDENCE : Thermospheric Nocturnal Wind Climatology Observed by Fabry-Perot Interferometers over the Asia-Oceania Region

• YATAGAI Akiyo

  Hirosaki University, Hirosaki, Japan

• OYAMA Shin-ichiro

  Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan

書誌事項

タイトル別名

• Thermospheric Nocturnal Wind Climatology Observed by Fabry-Perot Interferometers over the Asia-Oceania Region

抄録

 This study shows the horizontal structure of climatology of thermospheric nocturnal winds at a height of approximately 250 km in the Asia-Oceania region for the first time using observations made with Fabry-Perot interferometers (FPIs; optical wavelength of 630.0 nm). The FPIs used in this study were located at Shigaraki (Japan, 34.8°N, 136.1°E), Chiang Mai (Thailand, 18.8°N, 98.9°E), Kototabang (Indonesia, 0.2°S, 100.3°E), and Darwin (Australia, 12.4°S, 131.0°E). The observation data underwent quality control that involved consideration of cloud information, wind speed value, and standard deviation of results obtained from synchronous fringe images; approximately 30 % of the observation data from all the four stations were deemed suitable for use. The nocturnal diurnal changes at Shigaraki according to the local solar time were generally consistent with changes in China at similar latitudes, although the amplitudes were slightly different. All four stations showed the continuous flow pattern of the nocturnal diurnal wind in each season. The Chiang Mai and Darwin stations observed seasonal/diurnal changes similar to those observed by stations at similar latitudes on the North and the South American continents. Although there were fewer samples for Chiang Mai, Kototabang, and Darwin in the rainy season compared to that for Shigaraki, the seasonal climatology reported here can be used to provide a background long-term average status for describing anomalous events and extremes having different causes.

収録刊行物

• 気象集誌. 第2輯

  気象集誌. 第2輯 94 (6), 525-536, 2016

  公益社団法人 日本気象学会

キーワード

• thermospheric wind
• Fabry-Perot Interferometer
• solar activity
• ground-based observation

詳細情報

• CRID: 1390282681481024512
• NII論文ID: 130005286355
• NII書誌ID: AA00702524
• DOI: 10.2151/jmsj.2016-026
• ISSN: 21869057
• ISSN: 00261165
• NDL書誌ID: 027816259
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027816259
• Web Site: https://www.jstage.jst.go.jp/article/jmsj/94/6/94_2016-026/_pdf
• 本文言語コード: en
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