天氣概況~2012/08/31 - 颱風討論
By Skylar Davis
at 2012-08-31T09:31
at 2012-08-31T09:31
Table of Contents
昨天在偏南風加上水氣較多的環境影響下~
是一個有午後雷雨的天氣型態~風向在台北盆地輻合~所以這邊的降雨也最明顯~
偏南風的風速比想像中還要弱~因此迎風面的南部地區並未見到迎風降雨的現象~
降雨全都集中在午後配合熱力所發展的對流胞身上~
今天仍然是受到偏南風的影響~水氣持續偏多~高壓勢力還沒有伸展過來~
大氣不穩定的關係~午後配合熱力作用~還是容易會有熱對流發展帶來降雨的情況~
前往山區活動要特別小心遇到瞬間大雨~避免前往溪流邊~
聽到雷聲的話也要盡快進入屋內~躲避閃電雷擊的危險~
溫度比較潮濕悶熱~午後下雨過後感覺會比較舒適涼快一些~
明後兩天週末假期(1~2號)高壓勢力會逐漸西伸過來~台灣附近漸轉為偏東風~
午後還是會有熱對流發展的機會~預期會比這兩天要減少一些~
但是比較值得注意的是昨天在台灣以東慢慢出現建立的冷心低壓~
目前這個冷低呈現停留~如果明後天隨高壓伸展而往台灣靠近的話~
就要小心午後雷雨的情況會不會反而更為增多~
冷心低壓的發展建立往往很突然~
很可能前一天可能還沒有看到蹤影~一天後就已經冒出來而且還相當明顯~
夏天午後雷雨的預報會失準~神出鬼沒的冷心低壓也是原因之一~
冷心低壓移入會造成大氣上層變冷~頭重腳輕的結果~對流效果會加強~
所以冷心低壓的影響下~熱對流發展容易變得很旺盛~
週末假期的溫度持續偏高~外出除了要注意午後雷雨以外~防曬防中暑的準備也要做好~
下週的天氣目前來看仍然是維持夏季型的午後雷雨情況~
週間會有一波微弱冷鋒掠過東海黃海~但不會直接影響台灣~
台灣仍位於暖濕氣團的勢力範圍內~
只要沒有明顯天氣系統影響的話~就會持續午後熱對流的天氣型態~
今年夏天北極海冰靠近西伯利亞到白令海峽這一側嚴重消融~
冷源的位置可能偏西~會不會連帶造成東亞暖秋的現象值得觀察~
南邊的熱帶擾動短時間內仍然難成氣候~
預期仍要到9月上旬以後才有可能再度趨於活躍起來~
以上先簡單供參考囉~
--
是一個有午後雷雨的天氣型態~風向在台北盆地輻合~所以這邊的降雨也最明顯~
偏南風的風速比想像中還要弱~因此迎風面的南部地區並未見到迎風降雨的現象~
降雨全都集中在午後配合熱力所發展的對流胞身上~
今天仍然是受到偏南風的影響~水氣持續偏多~高壓勢力還沒有伸展過來~
大氣不穩定的關係~午後配合熱力作用~還是容易會有熱對流發展帶來降雨的情況~
前往山區活動要特別小心遇到瞬間大雨~避免前往溪流邊~
聽到雷聲的話也要盡快進入屋內~躲避閃電雷擊的危險~
溫度比較潮濕悶熱~午後下雨過後感覺會比較舒適涼快一些~
明後兩天週末假期(1~2號)高壓勢力會逐漸西伸過來~台灣附近漸轉為偏東風~
午後還是會有熱對流發展的機會~預期會比這兩天要減少一些~
但是比較值得注意的是昨天在台灣以東慢慢出現建立的冷心低壓~
目前這個冷低呈現停留~如果明後天隨高壓伸展而往台灣靠近的話~
就要小心午後雷雨的情況會不會反而更為增多~
冷心低壓的發展建立往往很突然~
很可能前一天可能還沒有看到蹤影~一天後就已經冒出來而且還相當明顯~
夏天午後雷雨的預報會失準~神出鬼沒的冷心低壓也是原因之一~
冷心低壓移入會造成大氣上層變冷~頭重腳輕的結果~對流效果會加強~
所以冷心低壓的影響下~熱對流發展容易變得很旺盛~
週末假期的溫度持續偏高~外出除了要注意午後雷雨以外~防曬防中暑的準備也要做好~
下週的天氣目前來看仍然是維持夏季型的午後雷雨情況~
週間會有一波微弱冷鋒掠過東海黃海~但不會直接影響台灣~
台灣仍位於暖濕氣團的勢力範圍內~
只要沒有明顯天氣系統影響的話~就會持續午後熱對流的天氣型態~
今年夏天北極海冰靠近西伯利亞到白令海峽這一側嚴重消融~
冷源的位置可能偏西~會不會連帶造成東亞暖秋的現象值得觀察~
南邊的熱帶擾動短時間內仍然難成氣候~
預期仍要到9月上旬以後才有可能再度趨於活躍起來~
以上先簡單供參考囉~
--
Tags:
颱風
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