天氣小觀:未來一周,太平洋高壓主導,盛夏 - 颱風討論
By Susan
at 2017-06-23T16:12
at 2017-06-23T16:12
Table of Contents
天氣小觀:未來一周,太平洋高壓主導,盛夏
太平洋高壓西伸後,台灣天氣穩定許多,
但畢竟不是七、八月,
因此可以觀察到太平洋高壓沒有想像中強勢,
台灣處於太平洋高壓西側勢力範圍內,
高壓中心短時間內未往台灣接近,
午後山區雲量多有一些熱對流降雨,
大環境場偏南風下,背風低壓的北部午後雲量增多,
尤其梅與鋒面接近下(但不會壓到台灣),
天氣更不穩定些。
但大體上依舊太平洋高壓主導,台灣盛夏已經開始。
值得注意的是,
夏至過後,從六月底到七月底這段時間,
北極渦旋開始面臨死亡的威脅,
由於太陽日照強烈,加上北極海冰大幅度縮減,
北極的溫度上升明顯,可能讓北極渦旋消散。
如果撐過七月,太陽熱力大衰,
八月以後,北極渦旋會慢慢回穩,
九月以後北極海冰開始增加。
然而,
今年的夏天對北極的冬季系統是異常殘酷的,
因為去年到今年初,北極海冰已經創下慘不忍睹的新低紀錄。
因此,
夏至過後的一個月,需留意北極渦旋的崩潰,
夏至過後的兩個月,需留意北極海冰是否再破新低紀錄。
再回到夏季系統,前途大好,
模式看來,未來一周,梅雨鋒面短暫南壓,但不會到達台灣上空,
且在南亞高壓的強勢推擠下,
一週後期西風噴流開始減弱,北跳到長江流域以北。
梅雨鋒面當然更加與台灣無緣。
一周過後,模式再預報太平洋高壓更增強,
原本的偏南風逐漸轉偏東風,台灣熱熱熱。
總結就是盛夏再盛夏,夏夏叫囉。
(以上供參囉)
--
太平洋高壓西伸後,台灣天氣穩定許多,
但畢竟不是七、八月,
因此可以觀察到太平洋高壓沒有想像中強勢,
台灣處於太平洋高壓西側勢力範圍內,
高壓中心短時間內未往台灣接近,
午後山區雲量多有一些熱對流降雨,
大環境場偏南風下,背風低壓的北部午後雲量增多,
尤其梅與鋒面接近下(但不會壓到台灣),
天氣更不穩定些。
但大體上依舊太平洋高壓主導,台灣盛夏已經開始。
值得注意的是,
夏至過後,從六月底到七月底這段時間,
北極渦旋開始面臨死亡的威脅,
由於太陽日照強烈,加上北極海冰大幅度縮減,
北極的溫度上升明顯,可能讓北極渦旋消散。
如果撐過七月,太陽熱力大衰,
八月以後,北極渦旋會慢慢回穩,
九月以後北極海冰開始增加。
然而,
今年的夏天對北極的冬季系統是異常殘酷的,
因為去年到今年初,北極海冰已經創下慘不忍睹的新低紀錄。
因此,
夏至過後的一個月,需留意北極渦旋的崩潰,
夏至過後的兩個月,需留意北極海冰是否再破新低紀錄。
再回到夏季系統,前途大好,
模式看來,未來一周,梅雨鋒面短暫南壓,但不會到達台灣上空,
且在南亞高壓的強勢推擠下,
一週後期西風噴流開始減弱,北跳到長江流域以北。
梅雨鋒面當然更加與台灣無緣。
一周過後,模式再預報太平洋高壓更增強,
原本的偏南風逐漸轉偏東風,台灣熱熱熱。
總結就是盛夏再盛夏,夏夏叫囉。
(以上供參囉)
--
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