被縣市長拿來擋子彈… 氣象局:預測並沒 - 颱風討論

By Megan
at 2016-09-28T20:02
at 2016-09-28T20:02
Table of Contents
我來回答好了
: 這裡有幾個問題
: 1.那個風圈大小,好像跟美日有差距,這個差距大小是不是在合理範圍?
美國 日本 有他們自己判定颱風風場大小和強度的標準
就以估風圈的議題來討論
日本喜歡把颱風系統的整體環流大小和雲系大小給考慮進去
事實上 日本會估那麼大 是因為他把梅姬所有的雲系幾乎都給包進去了
所以給的風圈大小常常有很大顆的現象
美國會考慮實際風場有達到暴風程度來給 但是他是1分鐘風速所以可能會
比10分中的氣象局略微大顆 但並不會差太多
而且 這次大家在意的點是 明明有石垣島的測站實測可以用
石垣島測站也是10分鐘平均在估 離颱風330公里就有7級風
也就是說颱風的暴風圈應該要達到330公里半徑才算合理
畢竟是實測的
: 2.預估到底有沒有失準?
我只能說氣象局使用了錯誤的初始資料去算未來台灣各地的風雨
氣象局使用了250公里半徑當作初始資料輸入
得出那樣的風雨預報
但是實際上暴風圈應該超過300公里
用不符合實際的資料當作初始資料下去算
算出來的結果當然不符合預期
: 3.有無實際追風得到的資料?資料的內容為何?若有卻為何不用?
追風計畫的資料是有的 也有公開在板上
追風結果顯示颱風的西北側400公里的地方有7級持續風
西南側280公里處也有超過7級持續風
其他兩個區域的位置都超過西南側
也就是說颱風的暴風半徑不該小於280公里
以防災角度而言 給300公里較為恰當
可是氣象局就是不用 也不知道原因
: 4.預報的結果,下修的根據何來?有無其他力量介入?
下修的依據應該就是根據颱風250公里半徑
電腦估算出來的結果 至於其他力量就不清楚
: 5.縣市首長參考這個報告來裁量放假,到底合不合理?如不合理誰負責?
這個問題感覺是政治問題 故不回答
--
: 這裡有幾個問題
: 1.那個風圈大小,好像跟美日有差距,這個差距大小是不是在合理範圍?
美國 日本 有他們自己判定颱風風場大小和強度的標準
就以估風圈的議題來討論
日本喜歡把颱風系統的整體環流大小和雲系大小給考慮進去
事實上 日本會估那麼大 是因為他把梅姬所有的雲系幾乎都給包進去了
所以給的風圈大小常常有很大顆的現象
美國會考慮實際風場有達到暴風程度來給 但是他是1分鐘風速所以可能會
比10分中的氣象局略微大顆 但並不會差太多
而且 這次大家在意的點是 明明有石垣島的測站實測可以用
石垣島測站也是10分鐘平均在估 離颱風330公里就有7級風
也就是說颱風的暴風圈應該要達到330公里半徑才算合理
畢竟是實測的
: 2.預估到底有沒有失準?
我只能說氣象局使用了錯誤的初始資料去算未來台灣各地的風雨
氣象局使用了250公里半徑當作初始資料輸入
得出那樣的風雨預報
但是實際上暴風圈應該超過300公里
用不符合實際的資料當作初始資料下去算
算出來的結果當然不符合預期
: 3.有無實際追風得到的資料?資料的內容為何?若有卻為何不用?
追風計畫的資料是有的 也有公開在板上
追風結果顯示颱風的西北側400公里的地方有7級持續風
西南側280公里處也有超過7級持續風
其他兩個區域的位置都超過西南側
也就是說颱風的暴風半徑不該小於280公里
以防災角度而言 給300公里較為恰當
可是氣象局就是不用 也不知道原因
: 4.預報的結果,下修的根據何來?有無其他力量介入?
下修的依據應該就是根據颱風250公里半徑
電腦估算出來的結果 至於其他力量就不清楚
: 5.縣市首長參考這個報告來裁量放假,到底合不合理?如不合理誰負責?
這個問題感覺是政治問題 故不回答
--
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