天氣小觀:白鹿颱風過後,99W入南海 - 颱風討論
By Agnes
at 2019-08-26T13:40
at 2019-08-26T13:40
Table of Contents
天氣小觀:白鹿颱風過後,99W入南海
白鹿颱風進入華南後,已減弱為低氣壓,但大量降雨後釋放潛熱,
破壞原先應該要出現的秋雨鋒面,
模式預報,今明兩天,太平洋高壓增強西伸籠罩台灣,
而模式也顯示,
未來一周東北亞一波強勁的西風槽在太平洋高壓奮勇抵禦下敗北,
因此,今年的八月底不會有北方系統影響,台灣維持夏季大環境。
再來看的就是後頭的99W,
預報看來通過呂宋島後進入南海,
周四以後太平洋高壓與北方西風槽戰事達到巔峰,高壓勢力略為東退,
於是變成南方有99W,東方有太平洋高壓,北方有西風槽的類共伴條件,
但不一樣的是,
在地面場,實在沒甚麼冷空氣,白鹿颱風帶入大量水汽殘留,
這對喜歡乾冷的地面冷高壓不利發展,
模式顯示未來一周中後期,北方地面高壓發展差,南風軍團佔盡優勢,
地面場的輻合地面秀是零星的氣旋,
周四以後要觀察的降雨,
中南部以99W/颱風的外圍環流影響為主,觀察局部雨勢
北部、東北部以南南東風到東南風的背風渦流的午後熱對流影響為主,
其中,再觀察若地面有弱東北風南下,背風渦流將更明顯。(地面小劇場秀)
9月以後,99W/颱風進入海南/廣東以後,藉由太平洋高壓引導,
再帶入水汽進入東亞,因此,是否有新的一波秋雨鋒面形成,就要再觀察,
但至少八月底前維持夏季大環境了。
(以上供參囉)
--
白鹿颱風進入華南後,已減弱為低氣壓,但大量降雨後釋放潛熱,
破壞原先應該要出現的秋雨鋒面,
模式預報,今明兩天,太平洋高壓增強西伸籠罩台灣,
而模式也顯示,
未來一周東北亞一波強勁的西風槽在太平洋高壓奮勇抵禦下敗北,
因此,今年的八月底不會有北方系統影響,台灣維持夏季大環境。
再來看的就是後頭的99W,
預報看來通過呂宋島後進入南海,
周四以後太平洋高壓與北方西風槽戰事達到巔峰,高壓勢力略為東退,
於是變成南方有99W,東方有太平洋高壓,北方有西風槽的類共伴條件,
但不一樣的是,
在地面場,實在沒甚麼冷空氣,白鹿颱風帶入大量水汽殘留,
這對喜歡乾冷的地面冷高壓不利發展,
模式顯示未來一周中後期,北方地面高壓發展差,南風軍團佔盡優勢,
地面場的輻合地面秀是零星的氣旋,
周四以後要觀察的降雨,
中南部以99W/颱風的外圍環流影響為主,觀察局部雨勢
北部、東北部以南南東風到東南風的背風渦流的午後熱對流影響為主,
其中,再觀察若地面有弱東北風南下,背風渦流將更明顯。(地面小劇場秀)
9月以後,99W/颱風進入海南/廣東以後,藉由太平洋高壓引導,
再帶入水汽進入東亞,因此,是否有新的一波秋雨鋒面形成,就要再觀察,
但至少八月底前維持夏季大環境了。
(以上供參囉)
--
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