天氣小觀:山竹颱風真是猛 - 颱風討論
By Adele
at 2018-09-15T10:40
at 2018-09-15T10:40
Table of Contents
天氣小觀:山竹颱風真是很猛
夏季大氣系統的最終奧義之作:超級颱風
冬季大氣系統的最終奧義之作:超級寒流
在冬夏大氣系統大戰的過渡季節中,
春季的最終精采壓軸秀:梅雨滯留鋒
秋季的最終精彩壓軸秀:秋颱共伴
有趣的是,因為大氣對季節反應的滯後性,
春季壓軸秀:梅雨滯留鋒一路秀到夏季六、七月
秋季壓軸秀:秋颱共伴也可以一路伴到冬颱共伴
想當然,
超級寒流可以出現在春季三、四月
超級颱風可以出現在秋季九、十月
2018年9月見識到了夏季大氣系統最終奧義之作:超級颱風山竹,也是今年至今的風王,
氣象局罕見給到了中心氣壓895百帕,
近中心最大風速每秒 60 公尺(約每小時 216公里),相當於17級風,
瞬間最大陣風每秒 75 公尺(約每小時 270 公里)相當於17級風以上,
七級風暴風半徑 320 公里,十級風暴風半徑 120 公里。
目前山竹颱風正通過菲律賓呂宋島進入了南海,
因此風向轉為東南風,東南部要留意雨勢。
由於太平洋高壓今天起明顯西伸,
因此山竹颱風穩定的走向華南沿海地區。
進入南海後的山竹颱風暴風圈會略縮,因此,強度會回補增強一些。
星期天登陸香港以西的趨勢大致確定。
回想山竹颱風登陸菲律賓前的偏北不意外,
因為風場略擴大,加上太平洋高壓因華東分裂高壓出現鞍部弱點,
導致山竹颱風出現較大幅度的偏北,當然弱點很快被高壓重新彌補。
但山竹颱風登陸呂宋島前,CMG環的出現,是否也和呂宋島地形就值得探討了。
山竹颱風過後,就看太平洋高壓大顯神威了。
這次的太平洋高壓來勢洶洶,
看它把山竹颱風壓的平平的就不難想像,
因此,
接下來好一陣子秋老虎的天氣,
稍有變化要等一周後期東北風南下,到時太平洋高壓如果夠強,就是秋高氣爽;
如果太平洋高壓不夠強,季風輻合,北部/東北部又要留意降雨了,
就像上周那樣。
(以上供參囉)
--
夏季大氣系統的最終奧義之作:超級颱風
冬季大氣系統的最終奧義之作:超級寒流
在冬夏大氣系統大戰的過渡季節中,
春季的最終精采壓軸秀:梅雨滯留鋒
秋季的最終精彩壓軸秀:秋颱共伴
有趣的是,因為大氣對季節反應的滯後性,
春季壓軸秀:梅雨滯留鋒一路秀到夏季六、七月
秋季壓軸秀:秋颱共伴也可以一路伴到冬颱共伴
想當然,
超級寒流可以出現在春季三、四月
超級颱風可以出現在秋季九、十月
2018年9月見識到了夏季大氣系統最終奧義之作:超級颱風山竹,也是今年至今的風王,
氣象局罕見給到了中心氣壓895百帕,
近中心最大風速每秒 60 公尺(約每小時 216公里),相當於17級風,
瞬間最大陣風每秒 75 公尺(約每小時 270 公里)相當於17級風以上,
七級風暴風半徑 320 公里,十級風暴風半徑 120 公里。
目前山竹颱風正通過菲律賓呂宋島進入了南海,
因此風向轉為東南風,東南部要留意雨勢。
由於太平洋高壓今天起明顯西伸,
因此山竹颱風穩定的走向華南沿海地區。
進入南海後的山竹颱風暴風圈會略縮,因此,強度會回補增強一些。
星期天登陸香港以西的趨勢大致確定。
回想山竹颱風登陸菲律賓前的偏北不意外,
因為風場略擴大,加上太平洋高壓因華東分裂高壓出現鞍部弱點,
導致山竹颱風出現較大幅度的偏北,當然弱點很快被高壓重新彌補。
但山竹颱風登陸呂宋島前,CMG環的出現,是否也和呂宋島地形就值得探討了。
山竹颱風過後,就看太平洋高壓大顯神威了。
這次的太平洋高壓來勢洶洶,
看它把山竹颱風壓的平平的就不難想像,
因此,
接下來好一陣子秋老虎的天氣,
稍有變化要等一周後期東北風南下,到時太平洋高壓如果夠強,就是秋高氣爽;
如果太平洋高壓不夠強,季風輻合,北部/東北部又要留意降雨了,
就像上周那樣。
(以上供參囉)
--
Tags:
颱風
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