Re: [問卦] 怎摸突然一陣狂風吹進來@@消失
陣風鋒面 Gust Front
科普文
http://www.lib.ncu.edu.tw/~hong/atmhmpg/sevr/sevr02.htm
簡單來說
就是在有組織、強對流系統的前緣
(有垂直風切的環境比較容易造成有組織的對流系統
因可把對流中的上升區、下沉區沖開 對流系統可持續維持)
常可見到"陣風鋒面 Gust front"
主要的形成原因 強對流中的雨滴(大顆+小顆)
落下同時 會帶動空氣出現下沉氣流
越強、越有組織的對流系統 這種前緣的沉降通常越強
變冷的原因
就是空氣中的雨滴 在下沉過程 有一部份會蒸發
蒸發會吸走環境的熱量 就變冷了
最簡單的講法是這樣
以剛剛的雷達迴波分析
http://imgur.com/18d5vDa
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