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タイトル: 100hPa面における南アジア高気圧の盛衰と東西変動
その他のタイトル: Ebb and Flow of Influence Concerned with East-West Movement of South Asian High at 100hPa Pressure Field
著者: 大和田, 道雄
石川, 由紀
畔柳, 洋子
大和田, 春樹
著者(訳): Owada, Michio
Ishikawa, Yuki
Kuroyanagi, Yoko
Owada, Haruki
出典: 愛知教育大学研究報告, 自然科学編. 2006, 55, p.23-28.
出版者: 愛知教育大学
抄録: South Asian High (SAH) appears over Tibetan Plateau and its surrounding area at upper troposphere from spring to autumn. Particularly, East Asian climate and European climate are affected by ebb and flow of SAH during summer. Recently, unusual weathers frequently occur in East Asia and in Europe. The causation of some unusual weathers is gathered that fluctuation of jet stream with east-west movement of SAH. The main purpose of this study is to clarify the concernment between east-west movement of SAH and unusual weathers in East Asia and in Europe. To identify of SAH, we distinguished them by the center, the shape, the area, the trough and the ridge at 100hPa pressure field using the NCEP/NCAR reanalysis pentad data. The results are summarized as follows, 1) SAH during summer (July and August) is categorized into four types, the Iranian mode, the Tibetan mode, the Iran-Tibet mode, and the center mode. 2) The center mode made the most appearance. Secondary, the Iran-Tibet mode and the Iranian mode made more appearance, and the Tibetan mode made the least appearance. 3) In East Asia, the trough of the Tibetan mode impacted on unusual cool summer, by contrast the ridge of the Iranian mode impacted on unusual hot summer. On the other hand, In Europe, the trough impacted on unusual hot summer, and the ridge impacted on unusual cool summer.
URI: http://hdl.handle.net/10424/299
言語: ja
NII資源タイプ: Departmental Bulletin Paper
権利情報: NIIによる電子化
著者版フラグ: publisher
sortkey: 05
出現コレクション:第55輯

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