Impacts of climate change on stratospheric ozone recovery
Impacts of climate change on stratospheric ozone recovery
复制标题
气候变化对平流层臭氧恢复的影响
DOI：
10.1029/2008gl036223
复制
发表时间：
2009
影响因子：
5.2
通讯作者：
J. Nielsen
中科院分区：
文献类型：
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作者：
D. Waugh;L. Oman;S. R. Kawa;R. Stolarski;S. Pawson;A. Douglass;P. Newman;J. Nielsen
利用戈达德地球观测系统化学气候模式的模拟，研究了温室气体增加对平流层臭氧“恢复”的影响。在该模型中，温室气体引起的气候变化对臭氧演变以及何时达到O3恢复里程碑产生很大影响。“臭氧量恢复到历史值”和“臭氧量不再受到消耗臭氧层物质的重大影响”这两个截然不同的里程碑可以在非常不同的日期达到，并且哪个先达到因区域而异。温室气体引起的平流层上部的冷却导致O3增加，在O3不再受到臭氧消耗物质的显著影响之前几十年，O3恢复到1980年或1960年的值。相反，热带和南部中纬度平流层下部的输送变化导致O3减少。在这里，即使人为的耗氧物质已经从大气中消除，臭氧也永远不会恢复到1980年的水平。臭氧恢复到1960年（或1980年）的数值不一定解释为臭氧从消耗臭氧层物质的影响中恢复。
The impact of increasing greenhouse gases (GHGs) on the “recovery” of stratospheric ozone is examined using simulations of the Goddard Earth Observing System Chemistry‐Climate Model. In this model, GHG‐induced climate change has a large impact on the ozone evolution and when O3 recovery milestones are reached. The two distinct milestones of “O3 returning to historical values” and “O3 being no longer significantly influenced by ozone depleting substances (ODSs)” can be reached at very different dates, and which occurs first varies between regions. GHG‐induced cooling in the upper stratosphere causes O3 to increase, and O3 returns to 1980 or 1960 values several decades before O3 is no longer significantly influenced by ODSs. In contrast, transport changes in the tropical and southern mid‐latitude lower stratosphere cause O3 to decrease. Here O3 never returns to 1980 values, even when anthropogenic ODSs have been removed from the atmosphere. O3 returning to 1960 (or 1980) values should not necessarily be interpreted as O3 recovery from the effects of ODSs.