We compare the relationship between the Arctic Oscillation (AO) and ozone concentration in the lower stratosphere over the Arctic during 1980–1994 (P1) and 2007–2019 (P2) in January and February using reanalysis datasets. The out-of-phase relationship between the AO and ozone in the lower stratosphere is significant in January during P1 and February during P2, but it is insignificant in January during P2 and February during P1. The variable links between the AO and ozone in the lower stratosphere over the Arctic in January and February are not caused by changes in the spatial pattern of AO but are related to the anomalies in the planetary wave propagation between the troposphere and stratosphere. The upward propagation of the planetary wave in the stratosphere related to the positive phase of AO significantly weakens in January during P1 and in February during P2, which may be related to negative buoyancy frequency anomalies over the Arctic. When the AO is in the positive phase, the anomalies of planetary wave further contribute to the negative ozone anomalies via weakening the Brewer–Dobson circulation and decreasing the temperature in the lower stratosphere over the Arctic in January during P1 and in February during P2.

中文翻译：

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一月和二月北极平流层北极涛动与臭氧的不同关系

我们使用重新分析数据集比较了1980年至1994年（P1）和2007年至2019年（P2）于1月和2月在北极平流层下部的北极涛动（AO）和臭氧浓度之间的关系。低平流层中的AO与臭氧之间的异相关系在P1的1月和P2的2月非常显着，但在P2的1月和P1的2月则不明显。一月和二月北极平流层下部的AO与臭氧之间的可变联系不是由AO的空间格局变化引起的，而是与对流层和平流层之间的行星波传播异常有关。与AO正相相关的平流层行星波的向上传播在1月的P1期间和2月的P2期间显着减弱，这可能与北极上空的负浮力频率异常有关。当AO处于正相时，行星波的异常会通过削弱Brewer-Dobson环流并降低P1月份的北极平流层温度和P2月份的2月温度而进一步导致负臭氧异常。