天氣小觀:未來一週,多春雨 - 颱風討論
By Noah
at 2020-03-29T17:30
at 2020-03-29T17:30
Table of Contents
天氣小觀:未來一週,多春雨
今年最激烈的一波冷暖大戰就當屬前兩天的鋒面了,
3月25日蒙古冷高壓開始南下,
3月26日晚冷空氣進入華南地區,冷暖雙方開始交手,
太平洋高壓主守台灣東南方海面,西風槽則壓進華北地區,
華中、華南到日韓等地,成了寬廣的鋒區
地面鋒面從東北亞向西南至四川地區,在地面冷空氣的強勢下往南移動。
3月27日早,地面鋒面已壓到華南地區且通過韓國,鋒線從日本海到華南。
3月27日午,鋒面接近台灣北部海面,地面冷暖空氣交手,
下午起,由於鋒前高溫激發各地山區的熱雷雨,
台北到宜蘭外海則因鋒線上的強水平風切降雨,
東北季風的北北東風與變性高壓的南風輻合於東北外海,為最激烈降雨帶。
值得注意的另外一個強輻合則位於台東沿海,
這當然是一個意外的春天大氣地面秀:
變性高壓的偏南風北上,一部分從台灣東部外海,
一部分繞道台灣海峽沿海峽地形以偏西南風北上,
由於前方東北季風的北北東風南下,同樣進入台灣海峽,
於是,偏西南風北上受阻,
由於春季白天的暖陽與鋒前暖區,台灣西南部出現高溫,成為一個小型暖高壓區,
台灣海峽的西南風轉折為偏西風,
轉折西風剛好從台東海岸山脈南側出海南麓出海遇上東部外海的偏南風,
同時,偏西風也加強海岸山脈的海陸風輻合,從中午起最強海風輻合下,
導致當地沿海出現大暴雨。
這種春天意外大氣地面秀儘管出現,但在快速變動的高空大氣秀下,就只是曇花一現。
只是出現的時候,一樣很驚人。
當然,
如果換成秋季偏暖的環境,東北風和西南風相遇就可能互旋出真正的大氣地面秀了。
3月27日晚,東北季風開始控場,溫度下降,同時南支槽東移,華南雲雨帶逼近。
3月28日,西風南北支槽東移,
北支槽後有地面冷高壓 與 南支槽前有華南雲雨帶 形成鋒面往台灣接近,
白天起鋒面通過台灣北部,晚起大降溫,基隆14度,台北15度。
至此,冬季系統勝利。
不滿24小時,
3月29日午後,地面高壓出海,冷空氣減弱,新一輪的冷暖大戰又要開始。
模式預報,明起西風南支槽再度東移,華南雲雨帶再度往台灣接近,
不過由於太平洋高壓關係,雲雨帶主要從東海通過,
不過台灣北部仍較容易波及降雨。
此後,
預報顯示,太平洋高壓位於南方菲律賓,台灣成了南北冷暖降雨區,
北方一波波的西風槽快速東移,西風噴流、西風帶就在台灣上空,
由於高空的輻散環境良好,
東北季風強一點,就成了冬季的地形雨,
東北季風弱一點,就成了冷暖的鋒面雨,
當然,鋒面雨的情形較多。(春季多鋒面雨)
鋒面雨畢竟不像地形雨,鋒面雨是有空檔的,沒下雨的時候,看起來天氣都很舒適。
( 春季多鋒面雨,下雨可以下到前世今生,時空更替;
夏季多對流雨,下雨可以下到生死一線,末日降臨,
秋季多氣旋雨,下雨可以下到天地鬼神,真實虛幻;
冬季多地形雨,下雨可以下到日月永恆,無止無盡。 )
因此,未來一週春天更多些了。
(簡單說說,以上供參囉)
--
今年最激烈的一波冷暖大戰就當屬前兩天的鋒面了,
3月25日蒙古冷高壓開始南下,
3月26日晚冷空氣進入華南地區,冷暖雙方開始交手,
太平洋高壓主守台灣東南方海面,西風槽則壓進華北地區,
華中、華南到日韓等地,成了寬廣的鋒區
地面鋒面從東北亞向西南至四川地區,在地面冷空氣的強勢下往南移動。
3月27日早,地面鋒面已壓到華南地區且通過韓國,鋒線從日本海到華南。
3月27日午,鋒面接近台灣北部海面,地面冷暖空氣交手,
下午起,由於鋒前高溫激發各地山區的熱雷雨,
台北到宜蘭外海則因鋒線上的強水平風切降雨,
東北季風的北北東風與變性高壓的南風輻合於東北外海,為最激烈降雨帶。
值得注意的另外一個強輻合則位於台東沿海,
這當然是一個意外的春天大氣地面秀:
變性高壓的偏南風北上,一部分從台灣東部外海,
一部分繞道台灣海峽沿海峽地形以偏西南風北上,
由於前方東北季風的北北東風南下,同樣進入台灣海峽,
於是,偏西南風北上受阻,
由於春季白天的暖陽與鋒前暖區,台灣西南部出現高溫,成為一個小型暖高壓區,
台灣海峽的西南風轉折為偏西風,
轉折西風剛好從台東海岸山脈南側出海南麓出海遇上東部外海的偏南風,
同時,偏西風也加強海岸山脈的海陸風輻合,從中午起最強海風輻合下,
導致當地沿海出現大暴雨。
這種春天意外大氣地面秀儘管出現,但在快速變動的高空大氣秀下,就只是曇花一現。
只是出現的時候,一樣很驚人。
當然,
如果換成秋季偏暖的環境,東北風和西南風相遇就可能互旋出真正的大氣地面秀了。
3月27日晚,東北季風開始控場,溫度下降,同時南支槽東移,華南雲雨帶逼近。
3月28日,西風南北支槽東移,
北支槽後有地面冷高壓 與 南支槽前有華南雲雨帶 形成鋒面往台灣接近,
白天起鋒面通過台灣北部,晚起大降溫,基隆14度,台北15度。
至此,冬季系統勝利。
不滿24小時,
3月29日午後,地面高壓出海,冷空氣減弱,新一輪的冷暖大戰又要開始。
模式預報,明起西風南支槽再度東移,華南雲雨帶再度往台灣接近,
不過由於太平洋高壓關係,雲雨帶主要從東海通過,
不過台灣北部仍較容易波及降雨。
此後,
預報顯示,太平洋高壓位於南方菲律賓,台灣成了南北冷暖降雨區,
北方一波波的西風槽快速東移,西風噴流、西風帶就在台灣上空,
由於高空的輻散環境良好,
東北季風強一點,就成了冬季的地形雨,
東北季風弱一點,就成了冷暖的鋒面雨,
當然,鋒面雨的情形較多。(春季多鋒面雨)
鋒面雨畢竟不像地形雨,鋒面雨是有空檔的,沒下雨的時候,看起來天氣都很舒適。
( 春季多鋒面雨,下雨可以下到前世今生,時空更替;
夏季多對流雨,下雨可以下到生死一線,末日降臨,
秋季多氣旋雨,下雨可以下到天地鬼神,真實虛幻;
冬季多地形雨,下雨可以下到日月永恆,無止無盡。 )
因此,未來一週春天更多些了。
(簡單說說,以上供參囉)
--
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