天氣小觀:低溫特報發布囉 - 颱風討論

By Harry
at 2018-01-08T16:29
at 2018-01-08T16:29
Table of Contents
天氣小觀:低溫特報發布囉,寒流即將來襲
強烈冷高壓1056百帕在蒙古,已分裂高壓1044百帕在甘肅往東南移動,
這波冷空氣明起影響,皮皮挫的是,
模式預報接著未來四天將一天比一天強:
明天:冷氣團吹襲,
後天:強烈冷氣團吹襲,
大後天:寒流來襲,
大大後天:寒流再加強吹襲。(850帕-3度線抵達北部)
尤其明天過後轉乾冷,這波寒流是標準的冬季寒潮,
讓然完全見識到:
1.隆冬寒潮,斜壓系統的威猛:大氣斜壓系統的槽前噴流讓台灣附近出現強對流/雷暴
2.隆冬寒潮,東亞大槽的活躍:模式預報仍持續認為西風大槽500百帕5760gpm線壓恆春半島
3.隆冬寒潮,地面冷高壓的強勢:強烈冷高壓將直衝下來,1028百帕壓到台灣,乾冷的極致
4.隆冬寒潮,東北季風的猛烈:東北季風大爆發,從黃海東海台海到南海,吹過北緯5度
因此,不能等閒視之。
從大氣高層來看,西風噴流整個凹進台灣,也可見冷槽的壓境,
中亞大脊的出現證明了即便,沒有阻塞高壓,沒有北極渦旋加持,
只要路徑對了,冷高壓在西伯利亞堆積第一路徑難下,
一樣可以來個寒潮爆發,而且影響數天。
今天過後中部以北的雨勢逐漸被乾空氣洗掉,
明天過後高空的西北氣流從西伯利亞下來,
就算西北路徑比起正北路徑長了一點,但從極地而下也夠冷了,
加上乾冷的輻射冷卻,應該會很冷,但話又說回來,風強不利輻冷,
因此,只能說低溫看著瞧了。抖抖
(以上供參囉)
--
強烈冷高壓1056百帕在蒙古,已分裂高壓1044百帕在甘肅往東南移動,
這波冷空氣明起影響,皮皮挫的是,
模式預報接著未來四天將一天比一天強:
明天:冷氣團吹襲,
後天:強烈冷氣團吹襲,
大後天:寒流來襲,
大大後天:寒流再加強吹襲。(850帕-3度線抵達北部)
尤其明天過後轉乾冷,這波寒流是標準的冬季寒潮,
讓然完全見識到:
1.隆冬寒潮,斜壓系統的威猛:大氣斜壓系統的槽前噴流讓台灣附近出現強對流/雷暴
2.隆冬寒潮,東亞大槽的活躍:模式預報仍持續認為西風大槽500百帕5760gpm線壓恆春半島
3.隆冬寒潮,地面冷高壓的強勢:強烈冷高壓將直衝下來,1028百帕壓到台灣,乾冷的極致
4.隆冬寒潮,東北季風的猛烈:東北季風大爆發,從黃海東海台海到南海,吹過北緯5度
因此,不能等閒視之。
從大氣高層來看,西風噴流整個凹進台灣,也可見冷槽的壓境,
中亞大脊的出現證明了即便,沒有阻塞高壓,沒有北極渦旋加持,
只要路徑對了,冷高壓在西伯利亞堆積第一路徑難下,
一樣可以來個寒潮爆發,而且影響數天。
今天過後中部以北的雨勢逐漸被乾空氣洗掉,
明天過後高空的西北氣流從西伯利亞下來,
就算西北路徑比起正北路徑長了一點,但從極地而下也夠冷了,
加上乾冷的輻射冷卻,應該會很冷,但話又說回來,風強不利輻冷,
因此,只能說低溫看著瞧了。抖抖
(以上供參囉)
--
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