疫情燒難復工 NASA認證:中國空汙大幅改 - 股票

By Ophelia
at 2020-03-01T19:29
at 2020-03-01T19:29
Table of Contents
1.原文連結:
※過長無法點擊者必須縮網址
https://udn.com/news/story/6811/4380681
2.原文內容:
最新衛星圖像顯示,中國地區汙染水平出現明顯下降,美國太空總署(NASA)指出,相信
這變化與新冠肺炎(COVID-19)疫情爆發,導致經濟活動急跌,有一定程度的關係。
NASA的衛星圖像顯示中國地區2020年二氧化氮的含量顯著下降。二氧化氮主要是汽車,發
電廠和工業設施排放的有毒氣體。一開始先是武漢地區的二氧化氮排放出現急遽減少,接
著漸漸全中國的二氧化氮都出現下降。
在NASA的衛星圖像中,顏色越紅代表二氧化氮含量越高,藍色則代表含量低。NASA比對去
年同期二氧化氮排放含量,衛星圖像清楚可見。傳統上這段時間的空氣汙染水平會稍降,
但以今次的降幅最為顯著,時間亦較往年持久,相信是因為中國因應疫情,廣泛地區實施
嚴厲的防疫隔離措施有關。
NASA戈達德太空飛行中心空氣品質研究員劉飛(音譯)表示,這次是他首次目睹大面積地
區的二氧化氮含量,在短時間內急遽減少。
她表示,2008年全球經濟放緩時曾監測到多個國家的二氧化氮水平都有下降,但那是逐漸
減少,而不是短期內急跌。另外,2008年的北京奧運,中國個別城市的空氣汙染水平亦曾
下跌,奧運結束後又回升。
3.心得/評論:
※必需填寫滿20字
這種公開空污數據,
某些層面也可做為變相的李克強指數
尤其對比2019年...
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