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The main causes of ozone depletion and the ozone hole are manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam-blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons), referred to as ozone-depleting [2
Ozone depletion, gradual thinning of Earth’s ozone layer caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica.
臭氧層破洞 （英語： Ozone depletion） 地球 大氣上空 平流層 （臭氧層）的 臭氧 從1970年代開始，以每十年4％的速度遞減的一種現象。 在兩極地區的部份季節，遞減速度還超過每十年4％，而在 春季 時連 對流層 的臭氧也在減少，形成所謂臭氧層破洞。 臭氧被消耗的主要原因是 氯 化物和 溴 化物对臭氧分解的 催化 作用引起的 [ 1 ]，这些 卤素 主要来源于地面释放的 氟氯烃 （CFC），商品名称为 氟里昂 [ 2 ]。
2010年11月27日 · 臭氧層破洞 （英語： Ozone depletion） 地球 大氣上空 平流層 （臭氧層）的 臭氧 從1970年代開始，以每十年4％的速度遞減的一種現象。 在兩極地區的部份季節，遞減速度還超過每十年4％，而在 春季 時連 對流層 的臭氧也在減少，形成所謂臭氧層破洞。 臭氧被消耗的主要原因是 氯 化物和 溴 化物對臭氧分解的 催化 作用引起的 [ 1 ]，這些 鹵素 主要來源於地面釋放的 氟氯烴 （CFC），商品名稱為 氟里昂 [ 2 ]。
2023年1月10日 · Climate 101: Ozone Depletion The ozone layer helps to protect life from harmful ultraviolet radiation. Find out what caused the ozone hole, and how the 1989 Montreal Protocol sought to put an end...
In 1987, the world signed the Montreal Protocol: the first global agreement to reduce the use of substances that deplete the ozone layer, known as ‘ozone-depleting substances.’. These are substances such as chlorofluorocarbons (CFCs); hydrochlorofluorocarbons (HFCs); and halon gases used in refrigerators, deodorants, and other industrial ...
The 2022 WMO/UNEP Ozone Assessment contains the most up-to-date understanding of ozone depletion, reflecting the thinking of hundreds of international scientific experts who contribute to its preparation and review.
The questions and answers address the nature of atmospheric ozone, the chemicals that cause ozone depletion, how global and polar ozone depletion occur, the extent of ozone depletion, the success of the Montreal Protocol, the possible future of the ozone
This assessment highlights advances and updates in the scientific understanding of ozone depletion since the 2018 Scientific Assessment of Ozone Depletion and provides policy-relevant scientific information on current challenges and future policy choices.
2021年9月15日 · Around 99 per cent of ozone-depleting substances have been phased out and the protective layer above Earth is being replenished. The Antarctic ozone hole is expected to close by the 2060s, while other regions will return to pre-1980s values even earlier.
