Increases in global tropospheric ozone following an El Niño event: examining stratospheric ozone variability as a potential driver
Increases in global tropospheric ozone following an El Niño event: examining stratospheric ozone variability as a potential driver
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厄尔尼诺事件后全球对流层臭氧增加：检查平流层臭氧变化作为潜在驱动因素
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发表时间：
2011
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通讯作者：
J. Pyle
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作者：
A. Voulgarakis;P. Hadjinicolaou;J. Pyle
平流层对对流层臭氧的年际变化有很强的影响。以前已经讨论过，在厄尔尼诺事件发生后，由于臭氧的平流层/对流层交换(STE)增强，对流层臭氧可能会增加。在这里，我们运行了一个为期5年的化学输送模式，涵盖了一段包括强烈厄尔尼诺事件(1997-1998年)的时期，发现平流层臭氧的可变性是模拟的厄尔尼诺事件后臭氧STE和对流层臭氧丰度增加的几乎可以忽略不计的驱动因素。影响跨对流层顶空气质量通量的动力学变化，对驱动这些异常可能要重要得多。版权所有(C)2011皇家气象学会
The stratosphere can strongly influence the interannual variability of tropospheric ozone. It has been discussed previously that tropospheric ozone can increase following an El Niño event, due to enhanced stratosphere/troposphere exchange (STE) of ozone. Here, we run a chemical‐transport model for 5 years, covering a period including a strong El Niño event (1997–1998), and find that variability of ozone in the stratosphere is an almost negligible driver of modelled post‐El Niño increases of ozone STE and tropospheric ozone abundances. Changes in the dynamics, affecting the cross‐tropopause air‐mass flux, may be far more important in driving these anomalies. Copyright © 2011 Royal Meteorological Society