未來幾天很春天,變化迅速~2015/02/23 - 颱風討論

By Mason
at 2015-02-23T09:00
at 2015-02-23T09:00
Table of Contents
前一波鋒面昨天迅速掠過台灣附近,但是鋒後冷空氣南下的幅度有限,
冷暖交界面往南移到台灣附近時已經趨於模糊,鋒面的結構明顯減弱,
因此鋒面帶來的降雨集中在鋒前雲雨帶上,鋒面本身通過時天氣變化反而不明顯,
鋒後東北季風略增強,因此昨天迎風面地區在鋒面通過後還是有些地形降雨,
不過降雨量仍然有限。
鋒面東移後也發生斷裂,西段留下了一個滯留鋒面在中國華南上空,
這種情況可說是非常典型的春季型態,華南滯留鋒經常會停留好幾天,
配合北方的高層西風短波槽陸續東移而產生一個一個的波動向東移出。
每當北邊有一個短波槽東移,南邊的滯留鋒面上就會有一個波動跟著移出,
通常每隔1~2天就會移出一次,
因此台灣春天的天氣總是變動非常頻繁而且快速,未來這幾天看起來就是這種情況。
預估今晚到明天(24日)華北有短波槽東移,
華南的滯留鋒面上也會有一個波動配合移出,
不過預報資料看起來這個波動比較微弱不明顯,對天氣的影響有限。
預估今天白天各地雲量較偏多,但仍有機會看到陽光在雲層間露臉,
底層吹東北風的關係,迎風面的基隆北海岸、東北角到宜蘭、花蓮等地有局部短暫陣雨,
雲層從西邊過來的關係,西半部山區也可能有局部零星的小雨機會,
今晚到明天微弱波動東移通過,
中部、北部、東北部、東部降雨的情況會變得較明顯一些,轉為有短暫陣雨的天氣型態,
南部、東南部也有零星小雨機會,
降雨看起來部會很多,但還是要提醒大家外出記得攜帶雨具。
接著週三(25日)是一個短暫空檔,
週四(26日)到週五(27日)間又會有另一個波動伴隨鋒面要通過,
週六(28日)的空檔之後,週日(3月1日)還會有波動鋒面要東移,
因此天氣變動是非常的迅速而且頻繁,可說是非常春天的天氣型態。
溫度的變化不大,因為波動都是短波而且移動迅速,冷空氣強度都很有限,
北台灣的溫度起伏雖然較明顯一些,但是也不會很冷,
頂多是比較溫暖跟稍微轉涼的變化而已,
週日的鋒面通過後冷空氣有可能稍微強一點,不過還有待觀察,
以目前的型態來看並不利於強冷空氣南下,所以短時間內很難再有大幅度轉冷的機會。
以上簡單供參考囉~
--
冷暖交界面往南移到台灣附近時已經趨於模糊,鋒面的結構明顯減弱,
因此鋒面帶來的降雨集中在鋒前雲雨帶上,鋒面本身通過時天氣變化反而不明顯,
鋒後東北季風略增強,因此昨天迎風面地區在鋒面通過後還是有些地形降雨,
不過降雨量仍然有限。
鋒面東移後也發生斷裂,西段留下了一個滯留鋒面在中國華南上空,
這種情況可說是非常典型的春季型態,華南滯留鋒經常會停留好幾天,
配合北方的高層西風短波槽陸續東移而產生一個一個的波動向東移出。
每當北邊有一個短波槽東移,南邊的滯留鋒面上就會有一個波動跟著移出,
通常每隔1~2天就會移出一次,
因此台灣春天的天氣總是變動非常頻繁而且快速,未來這幾天看起來就是這種情況。
預估今晚到明天(24日)華北有短波槽東移,
華南的滯留鋒面上也會有一個波動配合移出,
不過預報資料看起來這個波動比較微弱不明顯,對天氣的影響有限。
預估今天白天各地雲量較偏多,但仍有機會看到陽光在雲層間露臉,
底層吹東北風的關係,迎風面的基隆北海岸、東北角到宜蘭、花蓮等地有局部短暫陣雨,
雲層從西邊過來的關係,西半部山區也可能有局部零星的小雨機會,
今晚到明天微弱波動東移通過,
中部、北部、東北部、東部降雨的情況會變得較明顯一些,轉為有短暫陣雨的天氣型態,
南部、東南部也有零星小雨機會,
降雨看起來部會很多,但還是要提醒大家外出記得攜帶雨具。
接著週三(25日)是一個短暫空檔,
週四(26日)到週五(27日)間又會有另一個波動伴隨鋒面要通過,
週六(28日)的空檔之後,週日(3月1日)還會有波動鋒面要東移,
因此天氣變動是非常的迅速而且頻繁,可說是非常春天的天氣型態。
溫度的變化不大,因為波動都是短波而且移動迅速,冷空氣強度都很有限,
北台灣的溫度起伏雖然較明顯一些,但是也不會很冷,
頂多是比較溫暖跟稍微轉涼的變化而已,
週日的鋒面通過後冷空氣有可能稍微強一點,不過還有待觀察,
以目前的型態來看並不利於強冷空氣南下,所以短時間內很難再有大幅度轉冷的機會。
以上簡單供參考囉~
--
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