| 任福民,王梅华,周秀骥,李维亮,史久恩. 1998. 近十五年全球臭氧变化[J]. 气象学报, 56(4):485-492, doi:10.11676/qxxb1998.043 |
| 近十五年全球臭氧变化 |
| STUDY ON CHANGES OF OZONE OVER THE GLOBE DURING THE PAST 15 YEARS |
| 投稿时间：1997-01-30 修订日期：1997-01-30 |
| DOI：10.11676/qxxb1998.043 |
| 中文关键词: 全球臭氧 变化趋势 准两年振荡 |
| 英文关键词:Global ozone Trend Quasi-biennial oscillation |
| 基金项目:自然科学重大项目;96-908-04-02-4课题 |
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| 摘要点击次数: 2687 |
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| 中文摘要: |
| 利用卫星观测臭氧总含量TOMS(第7版)资料,在剔除季节变化后对全球60°S-60°N范围首先进行了沿纬度分布的线性趋势和周期分析.结果表明:自本世纪70年代末,各纬带上的臭氧总量都呈下降趋势,强度随纬度升高而加剧,并发现总体上北半球臭氧的下降趋势较南半球更加明显;同时证实了准两年振荡是臭氧变化中除年周期外最显着的周期.并对臭氧变化中的准两年振荡作了遥相关分析;发现准两年振荡在强度和位相上基本呈纬向分布并主要表现出赤道对称的特征.135～170°E地区臭氧总量变化所表现出的不同于其它地区的原因可能是这一地区常年频繁出现的对流活动;而臭氧总量下降趋势表现出的北半球同纬度地区均大于南半球的南北半球差异可能是由两半球人类活动的差异引起. |
| 英文摘要: |
| Based on global TOMS (Total Ozone Mapping Spectrometer) data during Nov.,1978-Apr.,1993,after rejecting the annual variation,the study aimed at the linear trend,the periodic variation of the zonal mean total ozone over 60°S-60°N.The results show that since the end of 1970's,total ozone decrease at all latitudes with bigger trends at higher latitudes,while the trend in the Northern Hemisphere is bigger than that in the Southern Hemisphere at same latitude.Meanwhile,it is discovered that quasi-bienni-aloscillation is the most significant period in the changes of ozone except the annual variation.Secondly,teleconnection analysis for the quasi-biennial oscillation has been done,and the result shows that zonal distribution and equatorial sym metry in intensity and phase are the main characters in the quasi-biennial oscillation in the changes of ozone. |
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