天氣小觀:北極渦旋咚咚隆咚強,冷氣團拜新年 - 颱風討論
By Caitlin
at 2020-01-26T09:04
at 2020-01-26T09:04
Table of Contents
天氣小觀:北極渦旋咚咚隆咚強,冷氣團拜新年,甚至不排除度元宵。
新春新年過後,台灣的天空有了變化,
當然就是北極渦旋咚咚隆咚強,冷氣團也來過新年了。
強極渦事件發酵到了後期對南方影響很大,冬季季風活躍很久一段時間,
模式預報10天內都是冷高壓不斷影響,東北季風、強烈東北季風、冷氣團等,
當然可能也不排除寒流,副高退到北緯10~15度,甚至南海副高脊被擠到北緯10度。
這波冬季系統威力,應該就是入冬以來影響南方 最大勢力+最久時間,
當然,也可能是最強巔峰,再觀察囉~
從過去來看,一月中旬以後北極渦旋進程增強,讓南北方的高空等位溫線非常傾斜,
於是,北方高空冷空氣向南方地面傾倒,斜壓系統的不穩定效應打凹了平直的西風帶,
由於是陸地是冷空氣移動的偏好路徑,因此地面冷氣團不斷從亞洲內陸南下,
1月22日 亞洲內陸溫帶地區高空出現許多西風短波槽,
1月23日 地面冷空氣來到副熱帶亞洲內陸,地形槽+斜壓溫差開始加大西風南支槽發展,
1月24日 西風南支槽活躍了,槽前印度洋水汽加入東亞鋒面,結構完整的鋒面出現。
1月25日 冷氣團推著斜壓鋒面往南移動,強大的斜壓冷鋒伴隨鋒前劇烈降雨接近台灣。
今天,鋒面抵達台灣,槽前低空噴流通過台灣上空,各地轉陰兩,
不過,地面鋒前有封閉氣旋發展通過台灣,
因此,各地一陣雨勢過後,由南向北趨緩,
1036百帕的地面冷高壓移向東北地區,勢力向南方擴展,
模式預報,
1月27日:1030百帕地面分裂高壓在華中地區,南支槽開始被抑制,冷氣團南下。
1月28日:華南地區1028百帕地面冷高壓,冷氣團影響台灣。
1月29日:華南地區1028百帕地面冷高壓,冷氣團影響台灣。
1月30日:北方冷高壓來取代華南冷高壓,冷氣團影響台灣。
1月31日:華中地區1028百帕地面冷高壓,冷氣團影響台灣。
2月 1日:華中地區冷高壓移向沿海減弱,夜晚低溫冷氣團。
2月 2日:華中地區地面冷高壓逐漸減弱,夜晚低溫冷氣團。
2月 3日:北方冷高壓勢如破竹再接再厲,白天明顯回溫,但夜晚仍有機會達標冷氣團。
2月 4日:冷高壓從新疆甘肅等地區補充,冷氣團影響台灣,西伯利亞有冷高壓發展。
2月4日以後西伯利亞冷高壓發展成有1050百帕以上的強烈冷高壓,就看後續如何影響。
看來冷氣團不只拜新年,甚至不排除度元宵!
至於降雨因為冷高壓關係,明天南支槽被抑制以後,
除了地形雨東北部、東部少數期間,
大部分時間台灣仍在冷高壓影響下,
冬季系統掛保證冷很久,冷個哆嗦哆嗦想,甚至想念夏天了,
怕冷的夏季迷要趕緊來找厚衣羽絨衣~~
(新春佳節,快速說說以上供參囉)
--
新春新年過後,台灣的天空有了變化,
當然就是北極渦旋咚咚隆咚強,冷氣團也來過新年了。
強極渦事件發酵到了後期對南方影響很大,冬季季風活躍很久一段時間,
模式預報10天內都是冷高壓不斷影響,東北季風、強烈東北季風、冷氣團等,
當然可能也不排除寒流,副高退到北緯10~15度,甚至南海副高脊被擠到北緯10度。
這波冬季系統威力,應該就是入冬以來影響南方 最大勢力+最久時間,
當然,也可能是最強巔峰,再觀察囉~
從過去來看,一月中旬以後北極渦旋進程增強,讓南北方的高空等位溫線非常傾斜,
於是,北方高空冷空氣向南方地面傾倒,斜壓系統的不穩定效應打凹了平直的西風帶,
由於是陸地是冷空氣移動的偏好路徑,因此地面冷氣團不斷從亞洲內陸南下,
1月22日 亞洲內陸溫帶地區高空出現許多西風短波槽,
1月23日 地面冷空氣來到副熱帶亞洲內陸,地形槽+斜壓溫差開始加大西風南支槽發展,
1月24日 西風南支槽活躍了,槽前印度洋水汽加入東亞鋒面,結構完整的鋒面出現。
1月25日 冷氣團推著斜壓鋒面往南移動,強大的斜壓冷鋒伴隨鋒前劇烈降雨接近台灣。
今天,鋒面抵達台灣,槽前低空噴流通過台灣上空,各地轉陰兩,
不過,地面鋒前有封閉氣旋發展通過台灣,
因此,各地一陣雨勢過後,由南向北趨緩,
1036百帕的地面冷高壓移向東北地區,勢力向南方擴展,
模式預報,
1月27日:1030百帕地面分裂高壓在華中地區,南支槽開始被抑制,冷氣團南下。
1月28日:華南地區1028百帕地面冷高壓,冷氣團影響台灣。
1月29日:華南地區1028百帕地面冷高壓,冷氣團影響台灣。
1月30日:北方冷高壓來取代華南冷高壓,冷氣團影響台灣。
1月31日:華中地區1028百帕地面冷高壓,冷氣團影響台灣。
2月 1日:華中地區冷高壓移向沿海減弱,夜晚低溫冷氣團。
2月 2日:華中地區地面冷高壓逐漸減弱,夜晚低溫冷氣團。
2月 3日:北方冷高壓勢如破竹再接再厲,白天明顯回溫,但夜晚仍有機會達標冷氣團。
2月 4日:冷高壓從新疆甘肅等地區補充,冷氣團影響台灣,西伯利亞有冷高壓發展。
2月4日以後西伯利亞冷高壓發展成有1050百帕以上的強烈冷高壓,就看後續如何影響。
看來冷氣團不只拜新年,甚至不排除度元宵!
至於降雨因為冷高壓關係,明天南支槽被抑制以後,
除了地形雨東北部、東部少數期間,
大部分時間台灣仍在冷高壓影響下,
冬季系統掛保證冷很久,冷個哆嗦哆嗦想,甚至想念夏天了,
怕冷的夏季迷要趕緊來找厚衣羽絨衣~~
(新春佳節,快速說說以上供參囉)
--
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