天氣速觀:呂宋島東方擾動來個地面秀,北宜嘩啦 - 颱風討論

By Rachel
at 2023-02-22T08:32
at 2023-02-22T08:32
Table of Contents
目前菲東呂宋島東方的氣旋擾動正在和大陸冷高壓互動,
地面層和氣旋環流和東北季風輻合,
中低層氣旋的東南風暖濕水氣不斷往台灣而來,遇上了西風帶的偏冷氣流,
兩者交會後在大氣中高層輻散,
雖然,
這種分層複雜了些,兩層輻合,一層輻散,
不像是秋季標準地面秀(地面層輻合,中層輻散)的激烈降雨,
但是北宜還是容易嘩啦啦,尤其山區。
模式顯示,擾動在西風帶氣流的影響下逐漸往北轉東北,
明天擾動往北強度減弱,但是北宜的降雨更明顯,
因為原本中低層的輻合變成輻散,
台灣東北方出現高空反氣旋輻散,西側接上西風氣流變成較急的急流
地面場台灣海峽北部依舊是強勁東北季風噴流,
於是:
高空氣流的右後方位置落在=>北宜
地面噴流的左前方位置落在=>北宜
北宜就是重雨區的苦主。
但冬末初春到底不是氣旋地面秀的魔法細節,應該要準備高空秀的史詩章節,
後天起,氣旋秀遠離,影響台灣的地面秀結束,
但大氣環境回到隆冬環境,
蒙古冷高壓南下冷氣團來襲,迎風面北部東北部繼續下,
好在冷高壓中心直接南下,東北部日夜永恆的地形雨周六下半天就緩和,但更冷了。
有機會挑戰強烈冷氣團,因此未來一週只有寒或冷,不會有暖和熱,冬季迷會開心。
(以上供參,冬迷會開心)
<補>
今天台中沿海低溫來自於背風低壓
菲東擾動氣旋在的偏東風在台灣海峽低層產生背風低壓,
低層的背風低壓把中層西風帶的冷氣流引導下來
導致台中沿海濕冷。
--
地面層和氣旋環流和東北季風輻合,
中低層氣旋的東南風暖濕水氣不斷往台灣而來,遇上了西風帶的偏冷氣流,
兩者交會後在大氣中高層輻散,
雖然,
這種分層複雜了些,兩層輻合,一層輻散,
不像是秋季標準地面秀(地面層輻合,中層輻散)的激烈降雨,
但是北宜還是容易嘩啦啦,尤其山區。
模式顯示,擾動在西風帶氣流的影響下逐漸往北轉東北,
明天擾動往北強度減弱,但是北宜的降雨更明顯,
因為原本中低層的輻合變成輻散,
台灣東北方出現高空反氣旋輻散,西側接上西風氣流變成較急的急流
地面場台灣海峽北部依舊是強勁東北季風噴流,
於是:
高空氣流的右後方位置落在=>北宜
地面噴流的左前方位置落在=>北宜
北宜就是重雨區的苦主。
但冬末初春到底不是氣旋地面秀的魔法細節,應該要準備高空秀的史詩章節,
後天起,氣旋秀遠離,影響台灣的地面秀結束,
但大氣環境回到隆冬環境,
蒙古冷高壓南下冷氣團來襲,迎風面北部東北部繼續下,
好在冷高壓中心直接南下,東北部日夜永恆的地形雨周六下半天就緩和,但更冷了。
有機會挑戰強烈冷氣團,因此未來一週只有寒或冷,不會有暖和熱,冬季迷會開心。
(以上供參,冬迷會開心)
<補>
今天台中沿海低溫來自於背風低壓
菲東擾動氣旋在的偏東風在台灣海峽低層產生背風低壓,
低層的背風低壓把中層西風帶的冷氣流引導下來
導致台中沿海濕冷。
--
Tags:
颱風
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