60～70~oS臭氧总量的QBO和ENSO信号

QBO and ENSO Signals in Total Ozone over 60～70 oS

本文利用Ｎｉｍｂｕｓ－７上搭载的臭氧总量观测光谱仪（ＴＯＭＳ）得到的６０～７０ｏＳ纬圈中臭氧总量资料，分析研究了该地区臭氧总量准两年振荡（ＱＢＯ）和ＥＮＳＯ信号的纬向分布，指出在该纬圈臭氧总量的长期变化中包含着的ＱＢＯ和ＥＮＳＯ信号。同时，本文还分析研究了沿纬圈分布的大气臭氧总量季节变化和长期变化趋势，指出在该纬圈各个季节中臭氧总量呈下降趋势，以６０～１００ｏＷ十月份的下降最大，达到－９．３ＤＵ／ａ。研究同时表明：臭氧总量季节变化、长期变化趋势、以及ＱＢＯ信号的纬向分布都在西南极上空出现异常。本文对此进行了讨论。

This article discusses the zonal distribution of seasonal variation, trends and quasi-biennial oscillation (QBO) and El Nino/Southern Oscillation (ENSO) in total ozone over 60～70 oS, using data from the Total Ozone Mapping Spectrometer (TOMS) on board of Nimbus 7 It is revealed that there are recognizable QBO and ENSO signals in the long term variation of TOMS ozone in 60～70 oS, and the QBO signal is significantly modulated at the longitudes in the Western Antarctica around the Antarctica Peninsula In addition, this study analyses the seasonal variation and trends in TOMS ozone in this latitude zone The downward trends are found over the entire zone, and the maximum of ozone decreasing (-9 3 DU/a) is in 60～100 oW, in October months In the zonal distribution of the ozone seasonal variation and trends, the obvious differences are found in the West Antarctica near the Antarctica Peninsula from at other longitudes Discussion on the impact of the Antarctica Peninsula on the ozone distribution and variation is made in this article