天氣速觀:東亞第一波寒潮正影響北方,週末冷氣來 - 颱風討論
By Bennie
at 2017-11-15T09:41
at 2017-11-15T09:41
Table of Contents
天氣速觀:東亞第一波寒潮正影響東亞北部,週末強烈東北季風帶來冷空氣
東亞第一波寒潮爆發的冷氣團侵襲東北、華北、朝鮮半島等地,
今早東北瀋陽降到零下4度,華北北京1度,平壤0度,首爾4度,
目前冷凍氣團渡日本海,勢力減弱但依舊是冷氣團
正往日本而去,日本今天開始受冷氣團影響。
對台灣來說冷氣團偏北通過,影響不大,
但很快的第二波寒潮爆發1048百帕以上的冷高壓週末南下,
對北方而言,這波冷氣團更凍了,
低空曾約1500公尺的850帕零下8度~零下20度籠罩朝鮮半島
而這次的冷空氣也會讓台灣有感,週末開始低空層約1500公尺的850帕6度線壓到北部,
不過初試啼聲的威力,6度線影響時間不到一天,
因此地面溫度的反應是否能到冷氣團,難度很高,
所以投票很新奇的投不會。XD
但水氣的話,主要是冷鋒雲帶以及東北季風地形雨,
沒有西風南支槽幫忙(西風帶正在南移,副高還沒退),
一周尾聲,第三波冷空氣南下才有西風南支槽提供水氣。
因此模式預報中南部的降雨機率比原先預報低。
留意的是這一波是中低空北北西氣流已經衝到東海北部,
這表示寒流首次入侵東海,冷氣團也接近台灣北部海域,
因此冷空氣也算衝的很南邊了,
而且帶來的強烈東北季風又要讓西部沿海狂風吹。
這波過後,還有新的冷空氣,情況又與這波稍有不同,威力要再觀察
對低緯度的台灣來說,
進入冬季大環境的變化隨斜壓大氣的西風系統變化迅速,
比起夏季正壓大氣環境有很大不同。
當然對北極來說,冬季顯然單純多了。
重點還是觀察週末冷空氣強度
(快速說明,以上供參囉)
--
東亞第一波寒潮爆發的冷氣團侵襲東北、華北、朝鮮半島等地,
今早東北瀋陽降到零下4度,華北北京1度,平壤0度,首爾4度,
目前冷凍氣團渡日本海,勢力減弱但依舊是冷氣團
正往日本而去,日本今天開始受冷氣團影響。
對台灣來說冷氣團偏北通過,影響不大,
但很快的第二波寒潮爆發1048百帕以上的冷高壓週末南下,
對北方而言,這波冷氣團更凍了,
低空曾約1500公尺的850帕零下8度~零下20度籠罩朝鮮半島
而這次的冷空氣也會讓台灣有感,週末開始低空層約1500公尺的850帕6度線壓到北部,
不過初試啼聲的威力,6度線影響時間不到一天,
因此地面溫度的反應是否能到冷氣團,難度很高,
所以投票很新奇的投不會。XD
但水氣的話,主要是冷鋒雲帶以及東北季風地形雨,
沒有西風南支槽幫忙(西風帶正在南移,副高還沒退),
一周尾聲,第三波冷空氣南下才有西風南支槽提供水氣。
因此模式預報中南部的降雨機率比原先預報低。
留意的是這一波是中低空北北西氣流已經衝到東海北部,
這表示寒流首次入侵東海,冷氣團也接近台灣北部海域,
因此冷空氣也算衝的很南邊了,
而且帶來的強烈東北季風又要讓西部沿海狂風吹。
這波過後,還有新的冷空氣,情況又與這波稍有不同,威力要再觀察
對低緯度的台灣來說,
進入冬季大環境的變化隨斜壓大氣的西風系統變化迅速,
比起夏季正壓大氣環境有很大不同。
當然對北極來說,冬季顯然單純多了。
重點還是觀察週末冷空氣強度
(快速說明,以上供參囉)
--
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