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大气科学  2006 

北大西洋臭氧极小值和北太平洋极大值及其相互关系

DOI: 10.3878/j.issn.1006-9895.2006.05.19

Keywords: 大气臭氧,北半球,中高纬度,纬向不均匀性

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Abstract:

利用1979~2002年TOMS卫星观测资料,采用臭氧总量纬向偏差和区域强迫的分析方法,研究北大西洋东北部大气臭氧低值与北太平洋西北部臭氧高值的季节变化过程和相互关系.研究表明,(1)北大西洋东北部存在一个大气臭氧极小值,年平均臭氧总量比纬向平均值低20DU以上,冬季低50DU以上;北太平洋西北部存在一个大气臭氧极大值,年平均臭氧总量比纬向平均值高35DU以上,冬季高70DU以上.(2)上述两个地区大气臭氧的季节变化具有很强的区域特征,区域大气动力学输送和化学过程对上述两个地区大气臭氧季节变化的强迫分别为50.3%和42.6%.(3)上述两个地区大气臭氧纬向偏差的季节变化间存在很好的反相关,相关系数达到-0.98,说明其臭氧区域强迫之间存在良好的关系.

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