西風槽

Multi tool use高空西風帶的高空冷心低氣壓出現槽線時,就是西風槽。西風槽是冷性和斜壓,槽中有強正渦,槽前地面常有隨溫帶氣旋的發展,槽後地面則形成反氣旋。西風槽在經過青藏高原會分開北支槽和南支槽,南支槽如果東移至離開高原,便會在雲南附近形成低壓區,這就是西南渦,西南渦通常會伸出低壓槽為華南帶來有雨的天氣。西風槽東移時也令副熱帶高氣壓東退,令熱帶氣旋轉向東北移動。
天氣系統
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| 行星尺度 | 副热带高压 – 极地东风 – 信風帶 – 西風帶 – 其他行星風系系統
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| 綜觀尺度 | 熱帶輻合帶 – 西風槽 – 极地涡旋 – 羅斯貝波 – 赤道反氣旋 – 季風槽 – 溫帶氣旋(炸彈低壓、科納風暴、溫帶低压)
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| 中尺度 | 切變線 – 熱那亞低氣壓 – 熱帶氣旋(潛在熱帶氣旋、熱帶低压、颱風、颶風) – 後熱帶氣旋 – 副熱帶氣旋 – 寒帶氣旋(極地低压)、副極地低压 – 季風 – 东风波
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| 小尺度 | 雷暴 – 龍捲風 – 尘卷风 – 海陆风 – 飑线 – 對流- 火龍捲 – 熱暴流
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| 其他 | 鋒 – 逆溫層
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