天氣小觀:熱浪來了,副高無極限準備大連線 - 颱風討論
By Mia
at 2018-07-29T17:02
at 2018-07-29T17:02
Table of Contents
天氣小觀:未來一周,熱浪來了,北半球副高無極限準備大連線
受到雲雀颱風往東亞沿海接近,偏北風將熱浪往南帶向台灣,
模式預報未來一周台灣受到熱浪侵襲,熱呼呼。
要避免戶外活動了。
不過這這波熱浪是雲雀颱風的外圍帶來,和副高壟罩下沉稍有不同,
因此熱浪是一陣一陣的,而非全面性熱浪滯留台灣。
而北方,
強大的太平洋高壓深入東亞、蒙古、東北亞,變成了大陸副熱帶高壓,
模式顯示未來一周從西太平洋、華東、東亞內陸再到青藏高原均受太平洋高壓影響,
華南到台灣則屬高壓邊緣,
如此強大的副熱帶高壓場已經遠遠超越自己在5月從南亞到西太平洋的勢力版圖,
甚至,白天高壓更強盛時,西太平洋到美國,再到北大西洋,再連結到北非副高,
北非副高又向東連結阿拉伯、南亞到青藏高原
北半球的副熱帶高壓都要連成一線了,
模式顯示未來一周,北半球副高已經接近連成一線,
首先北太平洋到北大西洋沒有強大的熱帶氣旋影響副高分布,
北非副高又適時從中東地區向東伸入南亞,北太平洋副高又適時從東亞深入中亞,
兩方副高準備在青藏高原連結。
因此只剩下阿拉斯加發展的冷渦旋,以及中亞西風槽是否影響北半球副高大連結了。
副高是暖高壓系統,夏季副高大連結,帶來的就是熱浪襲全球,
原因當然和全球暖化脫離不了關係,
全球暖化造成北極冰融,而北極海冰正式調節北半球的熱平衡,
冬季的北半球海冰到了夏季會漸漸融化,
如果冬季儲存的海冰量夠多,可以維持北極夏季的冷氣團向南調節溫度,
相反的,
去年冬季北極海冰儲存量非常低,整個冬季北極海冰面積不斷創新低,
自然沒有足夠的冰融化,去吸收大氣中的熱量,
北半球的夏季火熱無法有效調節,只有靠降雨來降溫。
偏偏南北氣流交換受到副高阻斷。
因此,中緯度地區熱浪不斷。
不過大氣自然調節的過程中,有很多複雜的運作,
副高阻斷南北氣流交換,卻同時讓極地冷氣團得以回流北極,
模式也預報了,進入八月後,後期的北極渦旋停止減弱,開始緩緩增強了,
看來冬季系統的眼睛也即將張開了,就等甦醒。
儘到盛夏還有一段時間,但眼見8月就要換冬季系統甦醒,
一個月後的準備邁向渡季節-秋季,
南北大戰又要展開,
春天是情感季節,春陽高曬一掃寒冬陰霾,一切從高空大氣幻變的美好期許。
秋天是文學季節,秋風遍地催促大地換裝,一切從地面大氣幻變的詠嘆思緒。
當然了,現在夏天是生活季節,各種活動目不暇給,
未來一周的降雨看起來是南部地區為主,尤其山區幾乎每天下雨,
原因當然是偏北風南下,
儘管地面層還是西南風,但大氣低層已轉偏北風,
因此剛好搭配台灣3000公尺地形的背風低壓在南部地區發展,
不過隨著雲雀颱風從東海進入華東地區,外圍環流水汽順著偏北風下來,
接著雲雀颱風登陸減弱大氣環境轉為偏南風,
因此模式看來,中部以北後期的降雨機率較高。
(以上供參囉)
--
受到雲雀颱風往東亞沿海接近,偏北風將熱浪往南帶向台灣,
模式預報未來一周台灣受到熱浪侵襲,熱呼呼。
要避免戶外活動了。
不過這這波熱浪是雲雀颱風的外圍帶來,和副高壟罩下沉稍有不同,
因此熱浪是一陣一陣的,而非全面性熱浪滯留台灣。
而北方,
強大的太平洋高壓深入東亞、蒙古、東北亞,變成了大陸副熱帶高壓,
模式顯示未來一周從西太平洋、華東、東亞內陸再到青藏高原均受太平洋高壓影響,
華南到台灣則屬高壓邊緣,
如此強大的副熱帶高壓場已經遠遠超越自己在5月從南亞到西太平洋的勢力版圖,
甚至,白天高壓更強盛時,西太平洋到美國,再到北大西洋,再連結到北非副高,
北非副高又向東連結阿拉伯、南亞到青藏高原
北半球的副熱帶高壓都要連成一線了,
模式顯示未來一周,北半球副高已經接近連成一線,
首先北太平洋到北大西洋沒有強大的熱帶氣旋影響副高分布,
北非副高又適時從中東地區向東伸入南亞,北太平洋副高又適時從東亞深入中亞,
兩方副高準備在青藏高原連結。
因此只剩下阿拉斯加發展的冷渦旋,以及中亞西風槽是否影響北半球副高大連結了。
副高是暖高壓系統,夏季副高大連結,帶來的就是熱浪襲全球,
原因當然和全球暖化脫離不了關係,
全球暖化造成北極冰融,而北極海冰正式調節北半球的熱平衡,
冬季的北半球海冰到了夏季會漸漸融化,
如果冬季儲存的海冰量夠多,可以維持北極夏季的冷氣團向南調節溫度,
相反的,
去年冬季北極海冰儲存量非常低,整個冬季北極海冰面積不斷創新低,
自然沒有足夠的冰融化,去吸收大氣中的熱量,
北半球的夏季火熱無法有效調節,只有靠降雨來降溫。
偏偏南北氣流交換受到副高阻斷。
因此,中緯度地區熱浪不斷。
不過大氣自然調節的過程中,有很多複雜的運作,
副高阻斷南北氣流交換,卻同時讓極地冷氣團得以回流北極,
模式也預報了,進入八月後,後期的北極渦旋停止減弱,開始緩緩增強了,
看來冬季系統的眼睛也即將張開了,就等甦醒。
儘到盛夏還有一段時間,但眼見8月就要換冬季系統甦醒,
一個月後的準備邁向渡季節-秋季,
南北大戰又要展開,
春天是情感季節,春陽高曬一掃寒冬陰霾,一切從高空大氣幻變的美好期許。
秋天是文學季節,秋風遍地催促大地換裝,一切從地面大氣幻變的詠嘆思緒。
當然了,現在夏天是生活季節,各種活動目不暇給,
未來一周的降雨看起來是南部地區為主,尤其山區幾乎每天下雨,
原因當然是偏北風南下,
儘管地面層還是西南風,但大氣低層已轉偏北風,
因此剛好搭配台灣3000公尺地形的背風低壓在南部地區發展,
不過隨著雲雀颱風從東海進入華東地區,外圍環流水汽順著偏北風下來,
接著雲雀颱風登陸減弱大氣環境轉為偏南風,
因此模式看來,中部以北後期的降雨機率較高。
(以上供參囉)
--
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