天氣速觀:倒數,第一波秋雨將至,北部準備迎秋 - 颱風討論
By Lauren
at 2019-09-14T10:45
at 2019-09-14T10:45
Table of Contents
第一波秋雨即將到來,倒數24小時內,北部要迎秋了! 因為接下來東北風要吹不停了。
(這裡不用入秋,入秋是東北季風到來)
3月的西伯利亞冷高壓中心可以堆積到1040百帕以上
4月上旬西伯利亞冷高壓迅速減弱,堆到1030百帕以上變得很勉強
4月下旬地面冷高壓中心減弱至102X百帕,並且各自為政,東北季風消失。
5月上旬西南季風爆發,開始清除東亞殘餘冷空氣,梅雨季也正式展開。
6月上旬 暖氣團大軍"洗滌"長江流域以南
6月下旬 暖氣團大軍"洗滌"長江流域以北
7月上旬 暖氣團大軍"洗滌"日、韓
7月下旬 梅雨季結束,迎接盛夏
8月上旬 太平洋高壓北抬,北半球盛夏
8月下旬 冬季系統甦醒,冷空氣第一波襲擊開始
8月的西伯利亞冷高壓中心102X百帕,且很不穩定。
9月的西伯利亞冷高壓中心可達1030百帕以上,穩定建立後東北季風登場。
10月西伯利亞冷高壓中心可達1040百帕以上
11月西伯利亞冷高壓中心可達1050百帕以上,東亞寒潮季節開始。
12月西伯利亞冷高壓中心可達1060百帕以上的超級冷高壓
模式預報,歐亞大陸上未來一週地面高壓態勢明顯,並伴隨北方冷空氣南下堆積,
模式顯示,一週後期西伯利亞/蒙古已經建立起1028~1030百帕的冷高壓中心,
從形勢與溫度來看,
1. 一週後期,西伯利亞/蒙古地面冷高壓吹出的東北風,產地直送,吹至台灣。
(當然有部分因素是南方颱風的加成)
2. 一周過後,850帕16度線通過台灣北部,850帕12度線抵達東海;
換句話說,地面溫度20度以下的冷空氣已經進入東海。
因此,整個大氣環境來看,真。東北季風一周尾聲差不多要登場了。
從 類-東北季風 接到 真。東北季風 可說是無縫接軌了,
模式顯示,
下午~晚上起,很微弱幾乎沒感覺,但帶有溫差的東北風南下,
因此,北部和東北部雲量增多,降雨機率提高。
事實上,
北部海面已經出現小區域雲團發展,順著昨晚偷渡的東北風飄進北海岸降雨。
明天起,
95W大環流的水汽也進來了,北部東北部轉為有雨天氣。
而今明南部也因為東北風大環境,
天氣正熱加上背風低壓容易發展雷雨胞。
後天開始就看95W的路徑,由於北方維持地面高壓形勢,
弱小的95W往西南西移動接近台灣,強度發展還要再觀察,
但環流和東北風的輻合降雨是免不了的,
當95W發展後,環流緊縮後,外圍的雲雨帶會消散,
但接近台灣後,季風輻合降雨會更大。
不過由於後期太平洋高壓再度連成一體,因此共伴效應到還不至於擔心。
(快速說說,以上供參囉)
--
(這裡不用入秋,入秋是東北季風到來)
3月的西伯利亞冷高壓中心可以堆積到1040百帕以上
4月上旬西伯利亞冷高壓迅速減弱,堆到1030百帕以上變得很勉強
4月下旬地面冷高壓中心減弱至102X百帕,並且各自為政,東北季風消失。
5月上旬西南季風爆發,開始清除東亞殘餘冷空氣,梅雨季也正式展開。
6月上旬 暖氣團大軍"洗滌"長江流域以南
6月下旬 暖氣團大軍"洗滌"長江流域以北
7月上旬 暖氣團大軍"洗滌"日、韓
7月下旬 梅雨季結束,迎接盛夏
8月上旬 太平洋高壓北抬,北半球盛夏
8月下旬 冬季系統甦醒,冷空氣第一波襲擊開始
8月的西伯利亞冷高壓中心102X百帕,且很不穩定。
9月的西伯利亞冷高壓中心可達1030百帕以上,穩定建立後東北季風登場。
10月西伯利亞冷高壓中心可達1040百帕以上
11月西伯利亞冷高壓中心可達1050百帕以上,東亞寒潮季節開始。
12月西伯利亞冷高壓中心可達1060百帕以上的超級冷高壓
模式預報,歐亞大陸上未來一週地面高壓態勢明顯,並伴隨北方冷空氣南下堆積,
模式顯示,一週後期西伯利亞/蒙古已經建立起1028~1030百帕的冷高壓中心,
從形勢與溫度來看,
1. 一週後期,西伯利亞/蒙古地面冷高壓吹出的東北風,產地直送,吹至台灣。
(當然有部分因素是南方颱風的加成)
2. 一周過後,850帕16度線通過台灣北部,850帕12度線抵達東海;
換句話說,地面溫度20度以下的冷空氣已經進入東海。
因此,整個大氣環境來看,真。東北季風一周尾聲差不多要登場了。
從 類-東北季風 接到 真。東北季風 可說是無縫接軌了,
模式顯示,
下午~晚上起,很微弱幾乎沒感覺,但帶有溫差的東北風南下,
因此,北部和東北部雲量增多,降雨機率提高。
事實上,
北部海面已經出現小區域雲團發展,順著昨晚偷渡的東北風飄進北海岸降雨。
明天起,
95W大環流的水汽也進來了,北部東北部轉為有雨天氣。
而今明南部也因為東北風大環境,
天氣正熱加上背風低壓容易發展雷雨胞。
後天開始就看95W的路徑,由於北方維持地面高壓形勢,
弱小的95W往西南西移動接近台灣,強度發展還要再觀察,
但環流和東北風的輻合降雨是免不了的,
當95W發展後,環流緊縮後,外圍的雲雨帶會消散,
但接近台灣後,季風輻合降雨會更大。
不過由於後期太平洋高壓再度連成一體,因此共伴效應到還不至於擔心。
(快速說說,以上供參囉)
--
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