A climatology of tides in the Antarctic mesosphere and lower thermosphere
A climatology of tides in the Antarctic mesosphere and lower thermosphere
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DOI：
10.1029/2005jd006803
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发表时间：
2006-12
影响因子：
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通讯作者：
D. Murphy;J. Forbes;R. Walterscheid;M. Hagan;S. Avery;T. Aso;G. Fraser;D. Fritts;M. Jarvis;A. McDonald;D. Riggin;M. Tsutsumi;R. Vincent
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文献类型：
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作者：
D. Murphy;J. Forbes;R. Walterscheid;M. Hagan;S. Avery;T. Aso;G. Fraser;D. Fritts;M. Jarvis;A. McDonald;D. Riggin;M. Tsutsumi;R. Vincent
描述了一个近似极地大气潮汐行为的函数。将该函数拟合到中间层和低层热层风的多站雷达测量中，目的是获得整个南极大陆潮汐变化的经度-纬度-高度描述。档案风数据集与现今风数据集相结合，以填补观测的空间分布，并减少空间混叠的潜在影响。多个年份通过编制月站复合日来组合，从而得到一年中的每个月的结果。尽管与潮汐阶段的年变化有关的潜在问题，但编制了南极纬向和经向潮汐风分量的有用气候学。拟合结果再现了高纬度潮汐风场的主要特征：冬季以半日迁移模式为主，夏季以半日纬向波1分量为主。夏季半日潮也存在纬向波数零分量。
[1] A function that approximates atmospheric tidal behavior in the polar regions is described. This function is fitted to multistation radar measurements of wind in the mesosphere and lower thermosphere with the aim of obtaining a latitude-longitude-height description of the variation of tides over the whole Antarctic continent. Archival wind data sets are combined with present-day ones to fill the spatial distribution of the observations and to reduce the potential effects of spatial aliasing. Multiple years are combined through the compilation of monthly station composite days, yielding results for each month of the year. Despite potential problems associated with year-to-year variations in the tidal phase, a useful climatology of Antarctic zonal and meridional tidal wind components is compiled. The results of the fits reproduce the major features of the high-latitude tidal wind field: the dominance of the semidiurnal migrating mode in the winter months and the presence of a semidiurnal zonal wave number one component in the summer months. It is also found that the summer semidiurnal tide contains a zonal wave number zero component.