Phase relationships between tidal horizontal wind components observed in the mid-latitude winter upper mesosphere
文献类型：期刊论文
| 作者 | Liu, R. L. ; Lu, D. R. ; Xu JY(徐寄遥) ; Hu X(胡雄) |
| 刊名 | Journal of Atmospheric and Solar-Terrestrial Physics
 |
| 出版日期 | 2008 |
| 卷号 | 70期号:1页码:40190 |
| 关键词 | tide tidal phase phase coupling upper mesosphere migrating solar tides mf radar observations lower thermosphere atmospheric tides terdiurnal tide nonlinear-interactions middle atmosphere semidiurnal tide diurnal tide mean wind |
| ISSN号 | 1364-6826 |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | Wind measurements obtained from the Wuhan/China MF radar during winter 2001 are used to study the phase relationships between tidal horizontal winds in the upper mesosphere. The tidal initial phases in any time window are uniformly defined in radians. The meridional and zonal initial phases of each tide exhibit similar time variation trends at each height, which is associated with near tidal horizontal phase differences at three continuous heights. However, different tides have different phase variation trends and phase differences. Tidal meridional components generally lead the zonal. The domains of tidal phase 'quasi-quadrature' and 'quasi-in-phase' are strictly specified. In most of similar to 14 days, the diurnal (Delta phi(24)) and sernidiurnal (Delta phi(12)) phase differences are 'quasi-quadrature' while the terdiurnal phase difference (Delta phi(8)) is surprisingly 'quasi-in-phase'. The appropriate tidal meridional and zonal quadratic phase coupling (QPC) equations are estimated, respectively. The calculated terdiurnal phases and those observed agree well. The tidal phases calculated by discrete Fourier transform (DFT) and least-squares fitting (LSF) are equivalent as are the tidal QPC revealed, respectively, by bicoherence spectrum and LSF analyses. By subtracting the estimated tidal zonal QPC equation from the meridional, a tidal phase difference equation is obtained. The calculated terdiurnal phase differences and those observed again agree with each other. Within the 14th time window, all three tides are generally elliptically rather than circularly or linearly polarized. However, both Delta phi(24) and Delta phi(12) in this window are 'quasi-quadrature' at all heights while Delta phi(8) are 'quasi-in-phase' at 92.0 and 94.0 km. So the estimated tidal QPC equations, the deduced tidal phase difference equation, the observed terdiurnal,quasi-in-phase' phase differences and the typical tidal polarization plots are all indications of real QPC between the observed 24-, 12- and 8-h tides. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6VHB-4PN0605-1-C&_cdi=6062&_user=1999492&_orig=search&_coverDate=01%2F31%2F2008&_sk=999299998&view=c&wchp=dGLbVzW-zSkWz&md5=d8243b3c0df2eea567a2345d192fefac&ie=/sdarticle.pdf |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1094]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Liu, R. L.,Lu, D. R.,Xu JY,et al. Phase relationships between tidal horizontal wind components observed in the mid-latitude winter upper mesosphere[J]. Journal of Atmospheric and Solar-Terrestrial Physics,2008,70(1):40190. |
| APA | Liu, R. L.,Lu, D. R.,徐寄遥,&胡雄.(2008).Phase relationships between tidal horizontal wind components observed in the mid-latitude winter upper mesosphere.Journal of Atmospheric and Solar-Terrestrial Physics,70(1),40190. |
| MLA | Liu, R. L.,et al."Phase relationships between tidal horizontal wind components observed in the mid-latitude winter upper mesosphere".Journal of Atmospheric and Solar-Terrestrial Physics 70.1(2008):40190. |
入库方式： OAI收割
来源：国家空间科学中心
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