天氣速觀:地面東北季風偷渡先共伴,宜蘭山區! - 颱風討論
By Genevieve
at 2022-10-16T11:00
at 2022-10-16T11:00
Table of Contents
天氣速觀:地面東北季風偷渡先(類)共伴,宜蘭大同山區!
早上起發現蒙古冷高壓的地面東北季風已經開始偷渡從東海進入台灣海峽,
東海到台灣海峽的的噴流,低層噴流的左前側有利輻合,
高層輻散又受惠於尼莎颱風增強打開的高空輻散,
於是,
尼莎颱風東南東風帶來的熱帶氣團在進入台灣東北部,
受地形加上東北季風在台灣海峽北部打底,暖濕水氣接近時開始爬升降雨,
東南東風暖濕水氣往台灣北部、東北部,讓北部東北部雨下的不得了。
其中以地形因素,東南東風近來爬山到北台灣最地形區的東側
宜蘭大同山區降雨非常可觀,今日11時不到已經突破600毫米,
說到底,
還是東北季風來共伴,因此廣義來看就是共伴效應開始。
模式顯示,
東北季風一路共伴到明天,配合西風槽南壓,要留意更強的共伴效應了。
原先樂觀的模式,一連三天,
1. 輻合 -> 2. 外圍環流 -> 3. 秋颱共伴效應
現在看來,
竟然是 1. 輻合 -> 類共伴/廣義共伴 -> 秋颱共伴效應
果然,
在秋季神鬼莫測的東北季風大氣環境,外圍環流不只是外圍環流
要留意是驚人的共伴環流。
(快速說說囉)
--
早上起發現蒙古冷高壓的地面東北季風已經開始偷渡從東海進入台灣海峽,
東海到台灣海峽的的噴流,低層噴流的左前側有利輻合,
高層輻散又受惠於尼莎颱風增強打開的高空輻散,
於是,
尼莎颱風東南東風帶來的熱帶氣團在進入台灣東北部,
受地形加上東北季風在台灣海峽北部打底,暖濕水氣接近時開始爬升降雨,
東南東風暖濕水氣往台灣北部、東北部,讓北部東北部雨下的不得了。
其中以地形因素,東南東風近來爬山到北台灣最地形區的東側
宜蘭大同山區降雨非常可觀,今日11時不到已經突破600毫米,
說到底,
還是東北季風來共伴,因此廣義來看就是共伴效應開始。
模式顯示,
東北季風一路共伴到明天,配合西風槽南壓,要留意更強的共伴效應了。
原先樂觀的模式,一連三天,
1. 輻合 -> 2. 外圍環流 -> 3. 秋颱共伴效應
現在看來,
竟然是 1. 輻合 -> 類共伴/廣義共伴 -> 秋颱共伴效應
果然,
在秋季神鬼莫測的東北季風大氣環境,外圍環流不只是外圍環流
要留意是驚人的共伴環流。
(快速說說囉)
--
Tags:
颱風
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