天氣小觀:週三起,北東,一庭秋雨;中南,秋風萬里 - 颱風討論
By Skylar Davis
at 2022-10-03T21:20
at 2022-10-03T21:20
Table of Contents
天氣小觀:週三起,北東部,一庭秋雨,情思萬縷;中南部,秋風萬里,邂逅夜裡
1045百帕的蒙古冷高壓今起已開始南下,蒙古烏蘭高原不用說全部冰凍,
明起就是東亞北部的第一波寒潮爆發,
儘管受南方東亞暖空氣勢力影響,
明天蒙古冷高壓南下華北並減弱至1030~1035百帕左右,
然而,內蒙呼和浩特降至零度以下,北京降至5度以下的寒潮侵襲,
再來就是華中、華南地區,
由於平原地形關係,冷氣團繼續從華北平原冷氣團往長江中下游平原堆積,
另一股冷氣團走海路,沿著東亞沿海而下,
走海路的攻勢較快,
周三凌晨已經推進冷鋒往台灣北部海面而來。
但這時節台灣的東南方依舊是熱海,由太平洋高壓南側帶起的熱帶東風
熱帶東風與正統東北季風的"北北東風"將又要開始輻合的秋季地面秀,
事實上,
周三冷鋒還未及壓到台灣北部前,東北部就開始降雨,
原先的東北季風偷渡的"北北東風"受海洋影響變"東北風",
於是"東北風"和"熱帶東風"輻合就發生在冷鋒抵達前,
這就是為何秋天總是看地面大氣變化(地面秀精彩),
因為西風帶還未南移前,高空有暖高壓,鋒面南下後結構轉差(高空秀並不精彩)。
事實上,東北季風南下後一連好幾天,頗有回報先前一週以上的秋老虎,
搞到菲律賓東方地面秀都秀出氣旋掃動了,
長期模式預報似乎有低壓擾動形成,繼續發展下去,那當然就是要留意共伴效應了。
只是苦主"北宜"並不在意,因為東北季風的降雨早在本週三已經歸剛誒.....了
(以上供參囉)
--
1045百帕的蒙古冷高壓今起已開始南下,蒙古烏蘭高原不用說全部冰凍,
明起就是東亞北部的第一波寒潮爆發,
儘管受南方東亞暖空氣勢力影響,
明天蒙古冷高壓南下華北並減弱至1030~1035百帕左右,
然而,內蒙呼和浩特降至零度以下,北京降至5度以下的寒潮侵襲,
再來就是華中、華南地區,
由於平原地形關係,冷氣團繼續從華北平原冷氣團往長江中下游平原堆積,
另一股冷氣團走海路,沿著東亞沿海而下,
走海路的攻勢較快,
周三凌晨已經推進冷鋒往台灣北部海面而來。
但這時節台灣的東南方依舊是熱海,由太平洋高壓南側帶起的熱帶東風
熱帶東風與正統東北季風的"北北東風"將又要開始輻合的秋季地面秀,
事實上,
周三冷鋒還未及壓到台灣北部前,東北部就開始降雨,
原先的東北季風偷渡的"北北東風"受海洋影響變"東北風",
於是"東北風"和"熱帶東風"輻合就發生在冷鋒抵達前,
這就是為何秋天總是看地面大氣變化(地面秀精彩),
因為西風帶還未南移前,高空有暖高壓,鋒面南下後結構轉差(高空秀並不精彩)。
事實上,東北季風南下後一連好幾天,頗有回報先前一週以上的秋老虎,
搞到菲律賓東方地面秀都秀出氣旋掃動了,
長期模式預報似乎有低壓擾動形成,繼續發展下去,那當然就是要留意共伴效應了。
只是苦主"北宜"並不在意,因為東北季風的降雨早在本週三已經歸剛誒.....了
(以上供參囉)
--
Tags:
颱風
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