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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Study of the Quasi 10-Day Waves in the MLT Region During the 2018 February SSW by a Meteor Radar Chain
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Study of the Quasi 10-Day Waves in the MLT Region During the 2018 February SSW by a Meteor Radar Chain

机译：研究拟10天浪MLT地区在2018年2月由西南偏南约一颗流星雷达链

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摘要

We present a study of the quasi 10-day waves (Q10DWs) in the mesosphere and lower thermosphere (MLT) during a sudden stratospheric warming (SSW) event in February 2018 based on three meteor radars located at Mohe (MH, 53.5°N, 122.3°E), Beijing (BJ, 40.3°N, 116.2°E), and Wuhan (WH, 30.5°N, 116.6°E). The enhanced Q10DWs are observed in the meridional component at MH and in the zonal component at BJ and WH. In the meridional component, the monthly mean Q10DW amplitudes in February 2018 are greater than 10 m/s at MH but weaker than ~7 m/s at BJ and WH. In the zonal component, monthly mean Q10DWs amplitudes are ~15 m/s at BJ and WH but only 9 m/s at MH. These latitudinal differences of the Q10DWs in the MLT region are very likely due to the Q10DW activity in the lower atmosphere and the mean background winds. The strong southward winds might bring the wave energy to MH in the meridional component during the occurrence of SSW, while the enhanced Q10DWs in the zonal component at BJ and WH are likely associated with the strong Q10DWs in the lower atmosphere and weakening eastward winds after the central date of the SSW. The significance test indicates that the enhanced Q10DWs in the meridional wind of MH and in the zonal wind of WH are very likely affected by the SSW. In addition, nonlinear interactions between the Q10DWs and other planetary waves also modulate the variations in the MLT region at BJ during the SSW.
机译：我们目前的研究拟10天(Q10DWs)中间层和降低热大气层(MLT)突然平流层变暖(量)基于三个流星事件在2018年2月雷达located at Mohe (MH, 53.5°N, 122.3°E)、北京(BJ, 40.3°N, 116.2°E),和武汉(WH,30.5°N, 116.6°E)。在MH和观察到的子午组件纬向分量在BJ, WH。经向组件,每月意味着Q10DW2018年2月振幅大于10在MH m / s,但弱于~ 7 m / s BJ和WH。纬向分量,每月意味着Q10DWs振幅在BJ ~ 15米/秒和WH但只有9在MH m / s。这些纬度的差异的Q10DWs MLT地区很可能由于低层大气和Q10DW活动平均背景风。风可能带来MH的波能量经向组件中发生量,增强Q10DWs带状组件在BJ和WH可能相关的强劲Q10DWs低层大气削弱中央日期后向东风的量。增强Q10DWs MH的经向风和纬向风的WH很可能量的影响。Q10DWs等之间的相互作用行星波也调整的变化MLT地区在BJ量。

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