Antisymmetric transport of middle stratospheric methanewith respect to the equator  

作　　者：ZHENG Bin SHI Chunhua CHEN Yuejuan 

机构地区：[1]Guangzhou Institute of Tropical and Marine Meteorology of China Meteorological Administration, Guangzhou 510080, China [2]School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China

出　　处：《Chinese Science Bulletin》2006年第14期1761-1765,共5页

基　　金：supported by the National Natural Science Foundation of China(Grant No.40505019);Scaling Project of the 0pen Foundation by Guangzhou Institute of Tropical and Marine Meteorology of China Meteorological Administration.

摘　　要：Halogen Occultation Experiment (HALOE)data are used to study the quasi-biennial variability ofCH4 mixing ratio in the middle stratosphere. The re-sults of EOF analysis indicate that quasi-biennialperiod is principal for the interannual variability ofmethane. Antisymmetry with respect to the equator issignificant for the methane QBO by explaining 59.3%variance, while the symmetric component only ex-plains about 30%. The antisymmetry is more signifi-cant in 10°-20° latitude than between 10oS and10oN. Analyses of the vertical motions show thatanomalies of annual cycle play an important role inthe antisymmetric distributions. Whereas, the zonalwind QBO is still the most important dynamical effectfor the interannual variability of CH4 between 10°S-10°N.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.

关 键 词：同温层 甲烷 卤素 QBO可变性 HALOE 

分 类 号：X16[环境科学与工程—环境科学]