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 mésosphère and the ionosphere. Quasi-Biennial Oscillation (QBO) influences on both the mésosphère and ionosphere are implied.
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)