一氧化二氮
蒙特利尔议定书
臭氧
臭氧层
臭氧消耗
环境科学
优势(遗传学)
大气科学
环境化学
化学
地质学
生物化学
基因
有机化学
作者
A. R. Ravishankara,J. S. Daniel,R. W. Portmann
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2009-10-02
卷期号:326 (5949): 123-125
被引量:3493
标识
DOI:10.1126/science.1176985
摘要
Unwelcome Dominance Stratospheric ozone is depleted by many different chemicals; most prominently, chlorofluorocarbons (CFCs) responsible for causing the Antarctic ozone hole. Nitrous oxide is also an ozone-depleting substance that has natural sources in addition to anthropogenic ones. Moreover, unlike CFCs, its use and emission are not regulated by the Montreal Protocol, which has helped to reverse the rate of growth of the ozone hole. Surprisingly, Ravishankara et al. (p. 123 , published online 27 August; see the Perspective by Wuebbles ) now show that nitrous oxide is the single greatest ozone-depleting substance that, if its emissions are not controlled, is expected to remain the dominant ozone-depleting substance throughout the 21st century. Reducing nitrous oxide emissions would thus enhance the rate of recovery of the ozone hole and reduce the anthropogenic forcing of climate.
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