天氣小觀:東亞大槽持續活躍 - 颱風討論
By Frederic
at 2023-02-26T07:52
at 2023-02-26T07:52
Table of Contents
目前亞洲大東岸海域的海溫已經降到了低點,
鄂霍次克海近半海域結冰和往年差不多,
北日本海、渤海海面溫度不到5度,
黃海西側海面溫度5~13度,
東海西側海面溫度8~15度,
台灣海峽北部海面溫度13~15度,
這表示
1.
東亞沿海降溫,有利東亞大槽變得活躍了起來,
冷高壓一個接一個南下。
2.
冷高壓不算強,
東北季風的冷空氣依然可以抵達台灣。
3.
冷海水的溫度開始影響台灣西部沿岸。
以上,
這就是冬末初春的地面環境了。
今明的冷氣團過後,
模式預報一週後期已經沒有較強的冷高壓了,
但冬末初春的地面環境,有利冷高壓繼續南下,
空檔不會大幅回暖,週四另一個冷高壓南下再降些溫度。
事實上長期預報模式顯示,
3月初的東亞大環境都是冬季系統活躍的階段,
因此冬衣沒可能收,也不用談,
南方的副高雖然連線,但被活躍的東亞大槽壓制的死死的,
沒可能北抬,也不用談。
3月的太平洋高壓崛起可能要等到下旬了,等等等。
(以上供參,等等等)
--
鄂霍次克海近半海域結冰和往年差不多,
北日本海、渤海海面溫度不到5度,
黃海西側海面溫度5~13度,
東海西側海面溫度8~15度,
台灣海峽北部海面溫度13~15度,
這表示
1.
東亞沿海降溫,有利東亞大槽變得活躍了起來,
冷高壓一個接一個南下。
2.
冷高壓不算強,
東北季風的冷空氣依然可以抵達台灣。
3.
冷海水的溫度開始影響台灣西部沿岸。
以上,
這就是冬末初春的地面環境了。
今明的冷氣團過後,
模式預報一週後期已經沒有較強的冷高壓了,
但冬末初春的地面環境,有利冷高壓繼續南下,
空檔不會大幅回暖,週四另一個冷高壓南下再降些溫度。
事實上長期預報模式顯示,
3月初的東亞大環境都是冬季系統活躍的階段,
因此冬衣沒可能收,也不用談,
南方的副高雖然連線,但被活躍的東亞大槽壓制的死死的,
沒可能北抬,也不用談。
3月的太平洋高壓崛起可能要等到下旬了,等等等。
(以上供參,等等等)
--
Tags:
颱風
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