青藏高原臭氧的准两年振荡

通过对臭氧卫星观测资料及大气环流资料的分析,研究了青藏高原上空臭氧的季节和年际变化.通过分析青藏高原地区臭氧准两年振荡(QBO),并与同纬度无山区及赤道地区臭氧QBO进行比较,指出:青藏高原臭氧QBO的平均周期为29个月,平均振幅为8DU.青藏高原臭氧QBO变化位相与热带平流层纬向风场QBO相反,即热带平流层纬向西风时,青藏高原上空臭氧总量偏小,东风时臭氧总量偏大.还讨论了与青藏高原臭氧QBO相关的大气环流物质输送理论.

QBO Signal in Total Ozone Over the Tibet

From data analysis of ozone satellite observation and general circulation, this article dis-cusses the seasonal and inter-annual variations of total ozone over the Tibet. Analysis has been done on quasi-biennial oscillation (QBO) in inter-annual ozone variation over the Tibet, in comparison with QBO over the tropics and non-mountain region at the same latitudes of the Tibet. The fact is shown that the Tibet ozone QBO has averaged period 29 months, with averaged amplitude S DU. The Tibet ozone QBO is anti-phase against 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 the Tibet.