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北極臭氧層破損創歷史新高40%受損

   2011-04-07 臺灣《中國時報》6380
核心提示:中華化工網訊:據報道,聯合國世界氣象組織5日表示,從去年冬季至今年3月底,由于大氣平流層氣溫過低等因素,北極上空的臭氧層有
中華化工網訊:據報道,聯合國“世界氣象組織”5日表示,從去年冬季至今年3月底,由于大氣平流層氣溫過低等因素,北極上空的臭氧層有40%受損,破損程度改寫先前的30%紀錄,創下歷史新高。

  “世界氣象組織”指出,北極地表溫度在剛過去的這個冬季非同尋常的暖和。但在大氣層的高處,卻非常寒冷,從而引發史上最為嚴重的平流層臭氧耗竭。

  另外,工業產生的化學物質也對臭氧層造成損害,在冬季尤為嚴重。

  紫外線照射可致皮膚癌,臭氧層能過濾人類所受的紫外線照射。盡管1987年各國政府簽訂《蒙特利爾公約》,試圖保護臭氧層,鼓勵廠商少用傷害臭氧層的化學物質“氟氯碳化合物”,但臭氧層仍破損連連。氟氯碳化合物廣泛用于電冰箱、冷氣機、滅火器及噴霧發膠。

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