北半球中纬度地区上层臭氧变化的合成分析研究

The Composite Analysis of Upper Level Ozone at Northern Middle Latitudes

应用逆转方法（Ｃ），对北半球中纬度地区８个观测质量较好的Ｏ３地面站的近３０年地面遥感逆转资料进行标准处理。采用合成分析方法，对中纬度带上层Ｏ３进行了分析研究，发现上层Ｏ３总的长期演变趋势较为平坦，仅８０年代初及９０年代初在３６ｋｍ以上层Ｏ３含量有突降现象。这可能与ＥＬＣｈｉｃｈｏｎ大火山爆发和Ｐｉｎａｔｕｂｏ大火山爆发有较大关系。此外，在上层Ｏ３含量的长期演变过程中，还可看到准１１年周期，并证实２８～３６ｋｍ层及３６ｋｍ以上层Ｏ３含量季节变化位相相反。本研究结果可能对南极Ｏ３洞的形成机制及近年来Ｏ３层变浅薄的机制的认识提供依据并产生影响。

This paper presents the trends and characteristics of upper ozone layers over middle latitudes by the analyses of the Umkehr data of the period of 1965～1993. The results, from 1965 to 1993, show that the upper ozone variation of middle latitudes per decade are about -1～2%, and the ozone seasonal variations between the layer of 28～36 km and the layer of above 36 km have opposite phases. Because of the eruption of El Chichon and Pinatubo, during the period of 1982～1983 and after 1991 there was a sudden change in upper layer.