DOI: 10.1002/2017JA025105
Scopus记录号: 2-s2.0-85044096093
论文题名: Ionospheric Variability Due to Tides and Quasi-Two Day Wave Interactions
作者: Gu S.-Y. ; Liu H.-L. ; Dou X. ; Jia M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 2 起始页码: 1554
结束页码: 1565
语种: 英语
英文关键词: ionospheric variability
; nonlinear interaction
; QTDW
; tides
英文摘要: The ionospheric variabilities due to planetary waves (PWs) are complicated due to their nonlinear interaction with tides (migrating diurnal and semidiurnal tides [DW1 and SW2]) in the mesosphere and lower thermosphere region. The quasi-two day wave (QTDW) is the most dominant oscillation during austral summer period except tides. This paper quantitatively studies the contribution of W3 QTDW, secondary PWs generated by the QTDW-tide interaction, and the change of tides to the ionospheric vertical drift variabilities. It is found that the secondary PWs generated by the QTDW-DW1 interaction (16 hr W4 and 48 hr E2) contribute more to the ionospheric variability than those generated by the QTDW-SW2 interaction (9.6 hr W5 and 16 hr E1). The latitudinal distribution of the vertical drift induced by tides and PWs varies due to their different wind structures. The vertical drift induced by DW1 is weakened at all latitudes due to the existence of W3 QTDW, whereas the SW2-induced vertical drift is enhanced at low latitudes and decreased at middle latitudes. The W3 QTDW induces weaker vertical drift in the equatorial region than that induced by 16 hr W4, 48 hr E2, and the change of tides. At middle latitudes, the vertical drift induced by W3 QTDW is slightly stronger than that induced by 48 hr E2 and the change of DW1 but is comparable to that induced by 16 hr W4 and the change of SW2. Our simulations show that the changes of tidal amplitudes and secondary PWs are as important as the QTDW itself to the day-to-day ionospheric variabilities. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114528
Appears in Collections: 气候减缓与适应
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作者单位: CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Science, University of Science and Technology of China, Hefei, China; High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, United States; Wuhan University, Wuhan, China
Recommended Citation:
Gu S.-Y.,Liu H.-L.,Dou X.,et al. Ionospheric Variability Due to Tides and Quasi-Two Day Wave Interactions[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(2)