今晚會開始出現明顯輻冷效應 - 颱風討論

By Zora
at 2017-02-11T16:09
at 2017-02-11T16:09
Table of Contents
http://imgur.com/iEOH63Z
http://imgur.com/7q5u0sR
http://imgur.com/gqLPX9E
http://imgur.com/pXywKts
http://imgur.com/aZrFPCz
從過去的地面天氣圖可以看到,
1064hpa的蒙古冷高壓以兩波分裂高壓的形式南下,
從2/9乾冷空氣南下開始華南一直不斷有低雲進入台灣,
雖然這跟不斷有分裂高壓南下是否有關不能確定,
但是持續的低雲也讓預期的輻射冷卻效應不如預期,
甚至在今天凌晨還有水氣移入造成嘉南與台東一帶降雨,
當地相對濕度提升也讓嘉義台南出現9~10度低溫,
台東亦出現11~12度的低溫,甚至罕見比多數西半部局屬測站還低。
目前除了淡水6.7度是配合輻射冷卻的低溫,
其他包含新竹、新屋、嘉義、台南出現10度以下低溫都沒有輻射冷卻配合,
沒有輻冷配合,原先預測7~8度的低溫以及近10度的日夜溫差就沒有出現,
不過今晚開始隨著分裂高壓進一步南下,雲量會開始明顯減少,
即使冷空氣最強的時間已過,850hpa 0度線預測會徘徊在北台灣至明天清晨,
今晚至明晨如果雲量減少開始出現明顯輻冷配合,將會有新一波溫度低點。
http://imgur.com/nbaUckF
http://imgur.com/syWz4Dq
http://imgur.com/Ay1nOQN
比較過去三天入夜前的可見光雲圖,
可以看到原先在華南與台灣附近的低雲在今天有明顯減少,
因此預期中南部入夜開始會有明顯的輻射冷卻,
台中今天白天晴朗,相對溼度在50%以下,入夜後應該是輻冷熱點,
迎風面的北部和東部最晚在明天白天以後雲量也會減少,
當然如果台北雲量減少能提前到今晚至明晨,依照數值0度線明晨還在北台灣的預測,
還是有機會寒流達標。
--
http://imgur.com/7q5u0sR
http://imgur.com/gqLPX9E
http://imgur.com/pXywKts
http://imgur.com/aZrFPCz
從過去的地面天氣圖可以看到,
1064hpa的蒙古冷高壓以兩波分裂高壓的形式南下,
從2/9乾冷空氣南下開始華南一直不斷有低雲進入台灣,
雖然這跟不斷有分裂高壓南下是否有關不能確定,
但是持續的低雲也讓預期的輻射冷卻效應不如預期,
甚至在今天凌晨還有水氣移入造成嘉南與台東一帶降雨,
當地相對濕度提升也讓嘉義台南出現9~10度低溫,
台東亦出現11~12度的低溫,甚至罕見比多數西半部局屬測站還低。
目前除了淡水6.7度是配合輻射冷卻的低溫,
其他包含新竹、新屋、嘉義、台南出現10度以下低溫都沒有輻射冷卻配合,
沒有輻冷配合,原先預測7~8度的低溫以及近10度的日夜溫差就沒有出現,
不過今晚開始隨著分裂高壓進一步南下,雲量會開始明顯減少,
即使冷空氣最強的時間已過,850hpa 0度線預測會徘徊在北台灣至明天清晨,
今晚至明晨如果雲量減少開始出現明顯輻冷配合,將會有新一波溫度低點。
http://imgur.com/nbaUckF
http://imgur.com/syWz4Dq
http://imgur.com/Ay1nOQN
比較過去三天入夜前的可見光雲圖,
可以看到原先在華南與台灣附近的低雲在今天有明顯減少,
因此預期中南部入夜開始會有明顯的輻射冷卻,
台中今天白天晴朗,相對溼度在50%以下,入夜後應該是輻冷熱點,
迎風面的北部和東部最晚在明天白天以後雲量也會減少,
當然如果台北雲量減少能提前到今晚至明晨,依照數值0度線明晨還在北台灣的預測,
還是有機會寒流達標。
--
Tags:
颱風
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