On the longitudinal structure of the transient day-to-day variation of the semidiurnal tide in the mid-latitude lower thermosphere − I. Winter season
On the longitudinal structure of the transient day-to-day variation of the semidiurnal tide in the mid-latitude lower thermosphere − I. Winter season
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中纬度低层热层半日潮瞬态日变化的纵向结构研究——一、冬季
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
Peter Hoffmann
中科院分区：
文献类型：
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作者：
E. Merzlyakov;Y. Portnyagin;Christoph Jacobi;Nicholas J. Mitchell;H. Muller;A. Manson;A. N. Fachrutdinova;Werner Singer;Peter Hoffmann
抽象。半日潮振幅的逐日变化的纵向结构进行了分析的基础上协调的中间层/低热层风测量在几个站在三个冬季运动。这些变化的可能的激发源进行了讨论。特别注意半日潮和逐日平均风变化之间的非线性相互作用。数据处理包括S变换分析，该分析考虑了二次波的瞬态行为。结果表明，在平流层变暖过程中出现了较强的潮汐调制，这可能是由平流层变暖过程中平均风场的非周期性变化引起的。关键词。气象学和大气动力学（中层大气动力学;波浪和潮汐）
Abstract. The longitudinal structure of the day-to-day variations of semidiurnal tide amplitudes is analysed based on coordinated mesosphere/lower thermosphere wind measurements at several stations during three winter campaigns. Possible excitation sources of these variations are discussed. Special attention is given to a nonlinear interaction between the semidiurnal tide and the day-to-day mean wind variations. Data processing includes the S-transform analysis which takes into account transient behaviour of secondary waves. It is shown that strong tidal modulations appear during a stratospheric warming and may be caused by aperiodic mean wind variations during this event. Key words. Meteorology and atmospheric dynamics (middle atmosphere dynamics; waves and tides)