天氣速觀:24小時模式再改,共伴偏向蘇花 - 颱風討論
By Skylar DavisLinda
at 2020-10-20T09:36
at 2020-10-20T09:36
Table of Contents
天氣速觀:24小時模式再改,共伴偏向蘇花
春季的豪大雨鋒面雨,未來昔日,震古鑠今。
夏季的豪大雨對流雨,聞風喪膽,生死一線。
秋季的豪大雨氣旋雨,天地鬼神,乾坤莫測。
冬季的豪大雨地形雨,日月永恆,雨不停國。
秋颱共伴的劇烈降雨是強降雨模式中最複雜的,差之毫釐 失之千里,
模式預報也不斷調整。
目前模式再改,把太平洋高壓調弱:https://imgur.com/a/PbGbrHj
對比昨日預報,模式認為太平洋高壓偏東,因此颱風沙德爾(19W)的環流偏東北上,
加上沙德爾颱風環流場太弱,與東北季風的共伴強雨帶也就偏向東北部外海,
不過,
宜蘭蘇花仍要留意,模式預報仍看好這裡出現共伴強雨。
會有這種變化當然就雨日本南方出現的97W有關,太平洋高壓延遲了西伸,
並且模式認為,
沙德爾颱風進入南海後,太平洋高壓脊西伸時,
調整的位置是:"台灣東南方",不是標準條件的:台灣東方,
因此,
整個共伴的強雨帶也就偏向蘇花到沖繩海域了。
當然,東北季風的南下是肯定的,
因此沙德爾颱風帶上的赤道氣團依舊會爬上來在台灣東北部相遇,
這裡要看ㄧ層常用來看溫度的的大氣層:1500米的850百帕大氣層
沙德爾颱風外圍環流與東北季風在此層的共伴,台灣東北部外海有小氣旋,
因此,這也是模式預報了蘇花的強降雨。
(快速說說供參囉)
--
春季的豪大雨鋒面雨,未來昔日,震古鑠今。
夏季的豪大雨對流雨,聞風喪膽,生死一線。
秋季的豪大雨氣旋雨,天地鬼神,乾坤莫測。
冬季的豪大雨地形雨,日月永恆,雨不停國。
秋颱共伴的劇烈降雨是強降雨模式中最複雜的,差之毫釐 失之千里,
模式預報也不斷調整。
目前模式再改,把太平洋高壓調弱:https://imgur.com/a/PbGbrHj
對比昨日預報,模式認為太平洋高壓偏東,因此颱風沙德爾(19W)的環流偏東北上,
加上沙德爾颱風環流場太弱,與東北季風的共伴強雨帶也就偏向東北部外海,
不過,
宜蘭蘇花仍要留意,模式預報仍看好這裡出現共伴強雨。
會有這種變化當然就雨日本南方出現的97W有關,太平洋高壓延遲了西伸,
並且模式認為,
沙德爾颱風進入南海後,太平洋高壓脊西伸時,
調整的位置是:"台灣東南方",不是標準條件的:台灣東方,
因此,
整個共伴的強雨帶也就偏向蘇花到沖繩海域了。
當然,東北季風的南下是肯定的,
因此沙德爾颱風帶上的赤道氣團依舊會爬上來在台灣東北部相遇,
這裡要看ㄧ層常用來看溫度的的大氣層:1500米的850百帕大氣層
沙德爾颱風外圍環流與東北季風在此層的共伴,台灣東北部外海有小氣旋,
因此,這也是模式預報了蘇花的強降雨。
(快速說說供參囉)
--
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