中文摘要：

卤素隐藏实验(HALOE ) 数据被用来学习在中间的平流层混合比率的 CH_4 的 thequasi 二年的可变性。EOFanalysis 的结果显示那个伪二年的时期是主要的为内部甲烷的年度可变性。关于赤道的 Antisymmetry 为由 explaining59.3 百分比变化的甲烷 QBO 是重要的，当对称的部件仅仅解释大约 30% 时。Theantisymmetry 比在 10 ~ o S 和 10 ~ o 之间在 10 deg-20 deg 纬度是更重要的 N。Analysesof 垂直运动证明年度周期的异例在反对称的分布起一个重要作用。而，带的风 QBO 仍然是最重要的动态效果为内部在 10 ~oS- 之间的 CH_4 的年度可变性 10 ~ 在上。

英文摘要：

Halogen Occultation Experiment （HALOE） data are used to study the quasi-biennial variability of CH4 mixing ratio in the middle stratosphere, The resuits of EOF analysis indicate that quasi-biennial period is principal for the interannual variability of methane, Antisymmetry with respect to the equator is significant for the methane QBO by explaining 59.3% variance, while the symmetric component only explains about 30%. The antisymmetry is more significant in 10°--20° latitude than between 10°S and 10°N. Analyses of the vertical motions show that anomalies of annual cycle play an important role in the antisymmetric distributions, Whereas, the zonal wind QBO is still the most important dynamical effect for the interannual variability of CH4 between 10°S-- 10°N.