Stratospheric ozone variations in the equatorial region as seen in Stratospheric Aerosol and Gas Experiment data
Stratospheric ozone variations in the equatorial region as seen in Stratospheric Aerosol and Gas Experiment data
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平流层气溶胶和气体实验数据显示赤道地区平流层臭氧变化
DOI：
10.1029/94jd00741
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发表时间：
1994
影响因子：
--
通讯作者：
F. Hasebe
中科院分区：
文献类型：
--
作者：
M. Shiotani;F. Hasebe
本文利用平流层气溶胶和气体实验II （SAGE II）仪器提供的臭氧剖面图资料，分析了1984-1989年5年的赤道臭氧变化。注意的重点是年周期和年际变率，特别是准两年一次的振荡（QBO）和厄尔尼诺-南方涛动（ENSO）在平流层下层的变化，这是对总臭氧层贡献最大的地方。赤道周围纬向平均臭氧总量的年变化由相对于赤道的对称模态和不对称模态组成，对称模态的最大贡献约为19公里，不对称模态的最大贡献约为25公里。在平流层积分的sage导出的柱量中，赤道上空总臭氧测图光谱仪观测到的持续纬向1波数结构几乎缺失，这表明对流层臭氧有重要贡献。赤道臭氧的年际变化以20 km以上的QBO和20 km以下的enso相关变化为主。臭氧QBO的特征是与赤道平流层低层纬向风QBO相关的纬向均匀相位变化。enso相关的臭氧变化既包括东西波动，也包括纬向均匀的»相位变化。在厄尔尼诺事件期间，东（西）半球的东西向正（负）偏明显，同时纬向平均值的减小趋势最大。参28。， 13个无花果。«少
An analysis is made of equatorial ozone variations for 5 years, 1984-1989, using the ozone profile data derived from the Stratospheric Aerosol and Gas Experiment II (SAGE II) instrument. Attention is focused on the annual cycle and also on interannual variability, particularly the quasi-biennial oscillation (QBO) and El Nino-Southern Oscillation (ENSO) variations in the lower stratosphere, where the largest contribution to total column ozone takes place. The annual variation in zonal mean total ozone around the equator is composed of symmetric and asymmetric modes with respect to the equator, with maximum contributions being around 19 km for the symmetric mode and around 25 km for the asymmetric mode. The persistent zonal wavenumber 1 structure observed by the total ozone mapping spectrometer over the equator is almost missing in the SAGE-derived column amounts integrated in the stratosphere, suggesting a significant contribution from tropospheric ozone. Interannual variations in the equatorial ozone are dominated by the QBO above 20 km and the ENSO-related variation below 20 km. The ozone QBO is characterized by zonally uniform phase changes in association with the zonal wind QBO in the equatorial lower stratosphere. The ENSO-related ozone variation consists of both the east-west vacillation and the zonally uniformmore » phase variation. During the El Nino event, the east-west contrast with positive (negative) deviations in the eastern (western) hemisphere is conspicuous, while the decreasing tendency of the zonal mean values is maximum at the same time. 28 refs., 13 figs.« less