天氣小觀:一周後期,阿拉伯海西南季風全面啟動 - 颱風討論
By Olga
at 2019-06-04T08:53
at 2019-06-04T08:53
Table of Contents
天氣小觀:一周後期,阿拉伯海西南季風全面啟動
亞洲西南季風最後一塊,阿拉伯海全面轉西南季風,
模式預報,一周後期,亞洲夏季季風全面北上,
阿拉伯海西南季風降水,甘霖帶到印度西岸,雨季開始。
位於印度西岸的 Goa,是印度最小的邦,海岸線長101公里,擁有漫長的沙質海岸線,
季風雨在6月帶來雨水,持續至9月底
平均5~10月降雨量:
112.7(5月)、868.2(6月)、994.8(7月)、512.7(8月)、251.9(9月)、124.8(10月)
當地雨季:6~9月
印度半島熱低壓:吃得好,長的快。
中南半島熱低壓:不公平,我有太平洋高壓干擾
阿拉伯辦熱低壓:不公平,我有東非副高干擾
因此,
孟加拉灣西南季風降水早早在五月就已開始,中南半島雨季也隨之展開。
位於緬甸的仰光,,屬熱帶季風氣候,分為乾季和雨季。
季風雨在5月帶來雨水,持續至9月10月初
平均5~10月降雨量:
303mm(5月)、547mm(6月)、559mm(7月)、602mm(8月)、368mm(9月)、206mm(10月)
當地雨季:6~10月初(10月中旬以後孟加拉灣西南季風消退,只剩南海西南季風)
最後就是南海西南季風了,
南海西南季風就位是大夏季系統地面勢力最特別的一塊
阿拉伯海的封閉季風低壓,孟加拉灣的季風槽,
最後就是南海西南季風與中緯度系統的交互作用。(西南季風+東亞梅雨)
模式顯示,一周後期,太平洋高壓逐漸東退,
南海西南季風重新進入活躍期。
太平洋高壓的東退,可以從東亞西風帶的改變看出太平洋高壓重新調整。
原本的東亞混亂的西風槽脊,隨著亞洲遠東地區阻塞高壓的出現,
東亞梅雨季的北方環境也正式就位,西風帶長波槽、長波脊出現,
今年的東亞梅雨到底是一阻、二阻還是三阻塞高壓的大氣形勢,
後續可觀察了。(一阻通常是遲到型梅雨-江淮流域的梅雨)
於是,
南方大氣環境全面就位:南亞高壓、太平洋高壓、西南季風。
北方大環環境全面就位:阻塞高壓、西風長槽脊、東亞殘餘冷空氣。
接著就是看東亞梅雨滯留鋒位置了。
由於西風噴流還沒北跳,南亞高壓試圖在一周後期上頂西風噴流,
但最新模式看來成效不彰,因此滯留鋒仍持續位於華南到東海一帶。
離台灣太近,也會影響台灣,
但最重要的還是模式對於鋒面在東海產生氣旋的預報,
東海氣旋會增強西南季風強度,如果移動緩慢或發展,那更是不得了。
若東海氣旋發展不良或沒有明顯氣旋發展,就看鋒面離台灣遠近。
由於滯留鋒冷暖主戰場在華南地區,
後期南海西南季風全面北上分路往華南,
在沒有全面正衝台灣中南部的話,中南部的雨勢不算大,
就看鋒面離北台灣的遠近,北部的降雨。
當然,
如果是東海氣旋的西南季風,甚至西南氣流那就會完全不一樣局面了。
(以上供參囉)
--
亞洲西南季風最後一塊,阿拉伯海全面轉西南季風,
模式預報,一周後期,亞洲夏季季風全面北上,
阿拉伯海西南季風降水,甘霖帶到印度西岸,雨季開始。
位於印度西岸的 Goa,是印度最小的邦,海岸線長101公里,擁有漫長的沙質海岸線,
季風雨在6月帶來雨水,持續至9月底
平均5~10月降雨量:
112.7(5月)、868.2(6月)、994.8(7月)、512.7(8月)、251.9(9月)、124.8(10月)
當地雨季:6~9月
印度半島熱低壓:吃得好,長的快。
中南半島熱低壓:不公平,我有太平洋高壓干擾
阿拉伯辦熱低壓:不公平,我有東非副高干擾
因此,
孟加拉灣西南季風降水早早在五月就已開始,中南半島雨季也隨之展開。
位於緬甸的仰光,,屬熱帶季風氣候,分為乾季和雨季。
季風雨在5月帶來雨水,持續至9月10月初
平均5~10月降雨量:
303mm(5月)、547mm(6月)、559mm(7月)、602mm(8月)、368mm(9月)、206mm(10月)
當地雨季:6~10月初(10月中旬以後孟加拉灣西南季風消退,只剩南海西南季風)
最後就是南海西南季風了,
南海西南季風就位是大夏季系統地面勢力最特別的一塊
阿拉伯海的封閉季風低壓,孟加拉灣的季風槽,
最後就是南海西南季風與中緯度系統的交互作用。(西南季風+東亞梅雨)
模式顯示,一周後期,太平洋高壓逐漸東退,
南海西南季風重新進入活躍期。
太平洋高壓的東退,可以從東亞西風帶的改變看出太平洋高壓重新調整。
原本的東亞混亂的西風槽脊,隨著亞洲遠東地區阻塞高壓的出現,
東亞梅雨季的北方環境也正式就位,西風帶長波槽、長波脊出現,
今年的東亞梅雨到底是一阻、二阻還是三阻塞高壓的大氣形勢,
後續可觀察了。(一阻通常是遲到型梅雨-江淮流域的梅雨)
於是,
南方大氣環境全面就位:南亞高壓、太平洋高壓、西南季風。
北方大環環境全面就位:阻塞高壓、西風長槽脊、東亞殘餘冷空氣。
接著就是看東亞梅雨滯留鋒位置了。
由於西風噴流還沒北跳,南亞高壓試圖在一周後期上頂西風噴流,
但最新模式看來成效不彰,因此滯留鋒仍持續位於華南到東海一帶。
離台灣太近,也會影響台灣,
但最重要的還是模式對於鋒面在東海產生氣旋的預報,
東海氣旋會增強西南季風強度,如果移動緩慢或發展,那更是不得了。
若東海氣旋發展不良或沒有明顯氣旋發展,就看鋒面離台灣遠近。
由於滯留鋒冷暖主戰場在華南地區,
後期南海西南季風全面北上分路往華南,
在沒有全面正衝台灣中南部的話,中南部的雨勢不算大,
就看鋒面離北台灣的遠近,北部的降雨。
當然,
如果是東海氣旋的西南季風,甚至西南氣流那就會完全不一樣局面了。
(以上供參囉)
--
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