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首页> 外文期刊>Geophysical Research Letters >Spectral analysis of ionospheric electron density and mesospheric neutral wind diurnal nonmigrating tides observed by COSMIC and TIMED satellites
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Spectral analysis of ionospheric electron density and mesospheric neutral wind diurnal nonmigrating tides observed by COSMIC and TIMED satellites

机译:COSMIC和TIMED卫星观测到的电离层电子密度和中层中性风日非迁移潮的频谱分析

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摘要

We use two-dimensional spectral analysis method to extract diurnal eastward zonal wavenumber 3 (E3) and westward zonal wavenumber 2 (W2) nonmigrating tide in the mesospheric winds from TIMED TIDI instrument and ionosphere density from the COSMIC six satellite cluster GPS data to study seasonal and inter-annual variations. In the case of the diurnal E3 component our results show that the ionospheric electron density feature has the same interannual variation trend as the symmetric mode of the mesospheric wind E3 component. The mesospheric wind E3 antisymmetric mode has the opposite inter-annual trend and less influence on the ionosphere. The diurnal W2 component show less clear correlation between the. mesosphere and the ionosphere. Quasi-Biennial Oscillation (QBO) influences on both the mesosphere and ionosphere are implied.
机译:我们使用二维频谱分析方法从TIMED TIDI仪器中层风中提取日向东纬向波数3(E3)和向西纬向波数2(W2)的非迁移潮汐,并从COSMIC 6卫星群GPS数据中提取电离层密度,以研究季节性和年际变化。在日E3分量的情况下,我们的结果表明电离层电子密度特征具有与中层风E3分量的对称模式相同的年际变化趋势。中层风E3反对称模式具有相反的年际趋势,对电离层的影响较小。昼夜W2分量之间的相关性较差。中层和电离层。暗示了对中层和电离层的准两年一次振荡(QBO)的影响。

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