By using ozonesonde measurements during July–August in 2016, 2019, and 2020 at Golmud and Qaidam, European Centre for Medium-Range Weather Forecasts (ECMWF) next-generation reanalysis ERA5 data, satellite-borne Moderate Resolution Imaging Spectrometer data products, and backward trajectory calculations from the chemical Lagrangian model of the stratosphere (CLaMS) model, this study analyzes vertical ozone distributions and explores the influence of deep stratospheric intrusions and wildfires on ozone variation in the northern Tibetan Plateau (TP) during the Asian summer monsoon period. Large ozone partial pressures were observed between 20 and 30 km, with a maximum of ~16 mPa at approximately 27 km latitude. The comparisons between the vertical ozone profiles with and without the occurrence of stratospheric intrusions showed that their relative ozone difference was up to 72.4% in the tropopause layer (15.8 km), and a secondary maximum of 66.7% existed in the middle troposphere (10.1 km). The stratospheric intrusions dried the atmosphere by 52.9% and enhanced the ozone columns by 26.1% below the upper troposphere and lower stratosphere. A case study of deep stratospheric intrusion exhibited the occurrence of large ozone partial pressure in the middle troposphere in detail, with an ozone peak of ~6 mPa at 10 km, which was caused by a tropopause fold associated with the westerly wind jet at the north flank of the Asian summer monsoon anticyclone. The stratospheric intrusion processes effectively transported the cold and dry air mass with high ozone in the stratosphere downward to the middle troposphere over the northern TP. This study also confirmed that by long-range transport processes, large wildfire smoke occurred around central and eastern Russia on 19–26 July 2016 greatly caused ozone pollution in the troposphere (6 km depth from the surface) over the northern TP.

通过使用2016年，2019年和2020年7月至8月在Golmud和Qaidam进行的臭氧探空仪测量，欧洲中距离天气预报中心（ECMWF）下一代再分析ERA5数据，卫星传播的中分辨率成像光谱仪数据产品以及向后的数据根据平流层化学拉格朗日模型（CLaMS）的轨迹计算，本研究分析了垂直臭氧分布，并探讨了亚洲夏季风期间平流层深部侵入和野火对青藏高原北部TP臭氧变化的影响。在20至30公里之间观察到较大的臭氧分压，在大约27公里的纬度处最大臭氧分压为〜16 mPa。对有无平流层侵入的垂直臭氧剖面的比较表明，对流层顶层（15.8 km）的相对臭氧差异高达72.4％，对流层中层（10.1 km）的次臭氧最大值为66.7％。 ）。平流层的侵入使大气层干燥了52.9％，并使臭氧对流层在对流层上层和下层平流层以下增加了26.1％。以平流层深部入侵为例，详细显示了对流层中部大臭氧分压的发生，在10 km处的臭氧峰值为〜6 mPa，这是由于北半球与西风急流相关的对流层褶皱造成的亚洲夏季风反旋风的侧面。平流层侵入过程有效地将平流层中臭氧含量高的冷，干燥空气团向下输送到北太平洋北部的对流层中部。这项研究还证实，通过远程运输过程，2016年7月19日至26日在俄罗斯中部和东部附近发生了大火，极大地造成了北部TP上对流层（距地面6公里的深度）的臭氧污染。