降雨機率除非為零 否則都可能下雨 - 颱風討論
By Catherine
at 2012-12-29T10:37
at 2012-12-29T10:37
Table of Contents
http://tinyurl.com/brfjeve
http://life.chinatimes.com/2007Cti/2007Cti-Rtn/2007Cti-Rtn-Content/
0,4526,110107+112012122801133,00.html
降雨機率除非為零 否則都可能下雨
2012-12-28 【中廣新聞/閻大富】
氣象局預報今天(28號)全台降雨機率大都為百分之三十,而大臺北地區清晨
已下起局部短暫雨,民眾可能認為三成的機率不算高為何會下雨?氣象局指出,
除非降雨機率是零,否則都有可能下雨,只是範圍大小和時間長短不同,而目前
氣象局作業就是以百分之三十為界限,只要超過這個界線,就有機會下雨。
氣象局所發布的「降雨機率」,是在相同的天氣環境裏,經過統計後,十次機
會中如果可能有三次降雨,降雨機率就訂為百分之三十,這是經過電腦模式預測
,以及預報中心內部討論後的結果。
預報中心技正陳維良指出,隨著天氣型態不同,如鋒面結構、雲系發展改變,
降雨機率也有可能提高,甚至在一天當中都會有變化,氣象局會根據最新的氣象
資料調整。
陳維良說,降雨機率是提供降雨發生程度的肯定性,除非機率是零,不然都有
可能下雨,只是範圍大小和時間長短會隨著機率加大。而氣象局目前的作業方式
,是以百分之三十為界限,只要超過下雨的機會就很大,但是屬於比較局部短暫
的下雨。
(全文完)
特別說明:
1.本文原取自八卦板#1GtSugM9。
我原本想直接轉來、好評論那邊的推文,但為遵守板規,
所以改成在下面概述。
2.那裡有些推文覺得陳技正這樣解釋和沒有解釋一樣、甚至覺得是白癡;
但也有板友認為那些噓文的板友需要統計學知識,
也有人以氣象統計上「降雨」定義來說明。
3.我自己則覺得,說明「30%」這個界線確實比較令人有所適從,所以不算白癡。
--
http://life.chinatimes.com/2007Cti/2007Cti-Rtn/2007Cti-Rtn-Content/
0,4526,110107+112012122801133,00.html
降雨機率除非為零 否則都可能下雨
2012-12-28 【中廣新聞/閻大富】
氣象局預報今天(28號)全台降雨機率大都為百分之三十,而大臺北地區清晨
已下起局部短暫雨,民眾可能認為三成的機率不算高為何會下雨?氣象局指出,
除非降雨機率是零,否則都有可能下雨,只是範圍大小和時間長短不同,而目前
氣象局作業就是以百分之三十為界限,只要超過這個界線,就有機會下雨。
氣象局所發布的「降雨機率」,是在相同的天氣環境裏,經過統計後,十次機
會中如果可能有三次降雨,降雨機率就訂為百分之三十,這是經過電腦模式預測
,以及預報中心內部討論後的結果。
預報中心技正陳維良指出,隨著天氣型態不同,如鋒面結構、雲系發展改變,
降雨機率也有可能提高,甚至在一天當中都會有變化,氣象局會根據最新的氣象
資料調整。
陳維良說,降雨機率是提供降雨發生程度的肯定性,除非機率是零,不然都有
可能下雨,只是範圍大小和時間長短會隨著機率加大。而氣象局目前的作業方式
,是以百分之三十為界限,只要超過下雨的機會就很大,但是屬於比較局部短暫
的下雨。
(全文完)
特別說明:
1.本文原取自八卦板#1GtSugM9。
我原本想直接轉來、好評論那邊的推文,但為遵守板規,
所以改成在下面概述。
2.那裡有些推文覺得陳技正這樣解釋和沒有解釋一樣、甚至覺得是白癡;
但也有板友認為那些噓文的板友需要統計學知識,
也有人以氣象統計上「降雨」定義來說明。
3.我自己則覺得,說明「30%」這個界線確實比較令人有所適從,所以不算白癡。
--
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