QBO signal in total ozone over Tibet

From data analysis of ozone satellite observation and general circulation, this article discusses the seasonal and interannual variations of total ozone over Tibet. Analysis has been done on Quasi-Biennial Oscillation (QBO) in interannual ozone variation over Tibet, in comparison with QBO over the tropics and non-mountain region at the same latitudes of Tibet. The fact is shown that Tibet ozone QBO has an averaged period of 29 months, with an averaged amplitude of 8 DU. The Tibet ozone QBO is antiphase to the stratospheric wind QBO over the tropics, i.e., when the tropics 30 hPa-wind is easterly, ozone has a surplus, and vice verse. This article also discusses the impact of atmospheric transfer on ozone QBO over Tibet.