近7年来，中山站地区的大气臭氧总量有减少趋势，与全球大气臭氧总量变化趋势相同。
The total ozone amount at the area of Zhongshan Station has been decreasing during recent 7 years, which is similar to the trend of the global ozone variation.
最后给出了北京地区地面太阳紫外总辐射的变化趋势，计算结果表明，地面太阳紫外总辐射对大气浑浊度的变化比对大气臭氧总量的变化敏感得多。
The calculation results show that the ultraviolet radiation received at the ground is more sensitive to changes in atmospheric turbidity than changes in the total ozone amount.
分析大气监测资料、TOMS臭氧总量资料和NCEP大气环流资料表明，大气臭氧总量随着对流层顶的低一高一低变化呈高一低一高的变化过程。
Analysis of the observational data, the TOMS total ozone, and NCEP circulation, shows that the atmospheric ozone amount experienced a high-low-high variation with low-high-low tropopause altitude.
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