Abstract
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 aver-aged 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.
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The authors are obliged to the Chinese Academy of Sciences (KZ951- A-205-05), the National Natural Science Foundation of China (49775276) and the Institute of Atmospheric Physics, Chinese Academy of Sciences (8-2212).
The authors wish to thank the Ozone Processing Team at NASA / Goddard Space Flight Center, USA, for their kind provision of TOMS ozone 7, NRCC, Canada, for their 10.7 cm solar radio flux data and NCAR for the stand-ardized 30 hPa zonal wind data at Singapore.