Arctic ozone amount in winter to spring shows large year-to-year variation. This study investigates Arctic spring ozone in relation to the phase of quasi-biennial oscillation (QBO)/the 11-year solar cycle, using satellite observations, reanalysis data, and outputs of a chemistry climate model (CCM) during the period of 1979–2017. For this duration, we found that the composite mean of the Northern Hemisphere high-latitude total ozone in the QBO-westerly (QBO-W)/solar minimum (S_min) phase is slightly smaller than those averaged for the QBO-W/S_max and QBO-E/S_max years in March. An analysis of a passive ozone tracer in the CCM simulation indicates that this negative anomaly is primarily caused by transport. The negative anomaly is consistent with a weakening of the residual mean downward motion in the polar lower stratosphere. The contribution of chemical processes estimated using the column amount difference between ozone and the passive ozone tracer is between 10–20% of the total anomaly in March. The lower ozone levels in the Arctic spring during the QBO-W/S_min years are associated with a stronger Arctic polar vortex from late winter to early spring, which is linked to the reduced occurrence of sudden stratospheric warming in the winter during the QBO-W/S_min years.

中文翻译：

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1979-2017年QBO和11年太阳周期的北极春季臭氧异常分析

冬季到春季的北极臭氧含量逐年变化很大。这项研究使用卫星观测，再分析数据以及1979年以来的化学气候模型（CCM）输出，研究了与准两年一次振荡（QBO）/ 11年太阳周期的相位有关的北极春季臭氧。 2017。在此期间，我们发现北半球QBO向西（QBO-W）/太阳最低（S _min）相中高纬度总臭氧的合成平均值略小于QBO-W / S的平均值_最大和QBO-E / S_最大年三月。在CCM模拟中对被动式臭氧示踪剂的分析表明，这种负异常主要是由运输引起的。负异常与极地低平流层中剩余平均向下运动的减弱相一致。使用臭氧和被动臭氧示踪剂之间的柱量差估算的化学过程的贡献在3月占总异常的10％至20％之间。在QBO-W / S _min年内，北极春季臭氧水平较低，这与冬季后期至春季初的北极极地涡旋较强有关，这与冬季QBO-W / S期间平流层突然变暖的发生减少有关。 W / S_分钟年。