LUPIT(盧碧) 觀察 #4 - 颱風討論

By Regina
at 2009-10-23T14:47
at 2009-10-23T14:47
Table of Contents
過去一天 LUPIT 沒什麼特別變化
速度慢 , 對流雲又忽強忽弱 , 到了晚上會更難抓中心(除非真˙風眼 出現)
JTWC的報告裡面有寫到 , 偏乾的空氣一直被卷入 , 造成它很難增強
比較明顯的差別在凌晨開始北部東北部降雨明顯 , 而且平地和山地沒那麼誇張的落差
近午時後降雨趨緩 , 花蓮一些地方有降雨
中午過後 LUPIT開始有點緩慢向北北西~北北東間移動
但方向不穩定 速度也不快
先來看最新的資料
環境方面:垂直風切 低
高空幅散 佳
低層幅合 佳
在強度方面主要的負面因素是西北邊空氣較乾
如果要由南海供應大量水氣 , 西邊的高壓得再弱些
駛流場
取300-850那層
颱風四週的導引氣流很平均 , 愈往高層 , 往東的氣流愈佔上風 , 不過以這颱風的強度
還是先看400-850 , 300-850比較適合
預估今天颱風也很難快起來 , 大致上比較有可能偏北到北北東間緩慢移動
至於未來路徑方面
這颱風真的蠻難預測
短期間會先往北-東北是比較多模式預期的方向(24小時內)
但之後 , 是北北東 東北 還是東北東 速度又是快或慢 就很難抓
因為這時直到明天 高壓都是退得遠遠的 氣流導引類似現在一樣很平均
目前看起來 在高壓西伸之前 颱風緯度愈高 對台灣影響愈小
相反的颱風緯度若還是很低 , 當高壓伸過來 , 容易導致颱風又往偏西-西北間移動
至於強度方面 , 應已達近期底限 , 不太會有明顯減弱 , 至於增強 , 看他的運氣吧
如果颱風速度一直都很慢(即便已經開始偏東北) , 都還是要特別注意 , 原因如上就是
高壓西伸的影響.
如果他出乎意料的今天往西北走 , 那只能說大自然超越目前電腦的極限了...
就目前資料看來 一天內緩慢往北北西-北北東間移動的機會是蠻大的(總之就是近北向)
至於發不發海警...如果颱風走向比較偏北北西 , 那機會比較大
--
速度慢 , 對流雲又忽強忽弱 , 到了晚上會更難抓中心(除非真˙風眼 出現)
JTWC的報告裡面有寫到 , 偏乾的空氣一直被卷入 , 造成它很難增強
比較明顯的差別在凌晨開始北部東北部降雨明顯 , 而且平地和山地沒那麼誇張的落差
近午時後降雨趨緩 , 花蓮一些地方有降雨
中午過後 LUPIT開始有點緩慢向北北西~北北東間移動
但方向不穩定 速度也不快
先來看最新的資料
環境方面:垂直風切 低
高空幅散 佳
低層幅合 佳
在強度方面主要的負面因素是西北邊空氣較乾
如果要由南海供應大量水氣 , 西邊的高壓得再弱些
駛流場
取300-850那層
颱風四週的導引氣流很平均 , 愈往高層 , 往東的氣流愈佔上風 , 不過以這颱風的強度
還是先看400-850 , 300-850比較適合
預估今天颱風也很難快起來 , 大致上比較有可能偏北到北北東間緩慢移動
至於未來路徑方面
這颱風真的蠻難預測
短期間會先往北-東北是比較多模式預期的方向(24小時內)
但之後 , 是北北東 東北 還是東北東 速度又是快或慢 就很難抓
因為這時直到明天 高壓都是退得遠遠的 氣流導引類似現在一樣很平均
目前看起來 在高壓西伸之前 颱風緯度愈高 對台灣影響愈小
相反的颱風緯度若還是很低 , 當高壓伸過來 , 容易導致颱風又往偏西-西北間移動
至於強度方面 , 應已達近期底限 , 不太會有明顯減弱 , 至於增強 , 看他的運氣吧
如果颱風速度一直都很慢(即便已經開始偏東北) , 都還是要特別注意 , 原因如上就是
高壓西伸的影響.
如果他出乎意料的今天往西北走 , 那只能說大自然超越目前電腦的極限了...
就目前資料看來 一天內緩慢往北北西-北北東間移動的機會是蠻大的(總之就是近北向)
至於發不發海警...如果颱風走向比較偏北北西 , 那機會比較大
--
Tags:
颱風
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