Forcing of the ionosphere by waves from below
Forcing of the ionosphere by waves from below
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DOI：
10.1016/j.jastp.2005.01.018
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发表时间：
2006-02-01
影响因子：
1.9
通讯作者：
Lastovicka, J
中科院分区：
文献类型：
--
作者：
Lastovicka, J
低层，特别是对流层中的气象过程主要通过向上传播的波及其修改和调制来影响电离层。这些波是行星波、潮汐波、重力波，以及几乎被遗忘的次声波。波活动的一部分可以在电离层高度原位产生作为主要的（例如，昼夜潮汐，重力波）或次级波（例如，一些重力波或行星波），但本文的重点是从电离层以下向上传播的波。它们大多直接传播到电离层，但行星波只能间接地向上传播到F区高度，通过各种潜在的方式，如向上传播的潮汐的调制。在向上传播期间，特别是在MLT区域中，波可以通过非线性相互作用而改变。本文分别对低电离层、E区电离层和F区电离层的向上传播波对电离层的影响作了简要概述。中性大气源的向上传播波从大气-电离层系统中的垂直耦合的角度来看以及对于无线电传播/电信中的应用都是重要的，因为它们是无线电波传播条件预测的不确定性的重要部分。(c)2005爱思唯尔有限公司保留所有权利。
Meteorological processes in the lower-lying layers, particularly in the troposphere, affect the ionosphere predominantly through the upward propagating waves and their modifications and modulations. Those waves are planetary waves, tidal waves, gravity waves, and almost forgotten infrasonic waves. A part of wave activity can be created in situ at ionospheric heights as primary (e.g., diurnal tide, gravity waves) or secondary waves (e.g., some gravity or planetary waves), but this paper is focused on the upward propagating waves from below the ionosphere. They propagate into the ionosphere mostly directly but the planetary waves can propagate upwards to the F region heights only indirectly, via various potential ways like modulation of the upward propagating tides. The waves may be altered during upward propagation via non-linear interactions, particularly in the MLT region. A brief overview of effects on the ionosphere of upward propagating waves from lower-lying regions is given, separately for the lower ionosphere, for the E-region ionosphere, and for the F-region ionosphere. The upward propagating waves of the neutral atmosphere origin are important both from the point of view of vertical coupling in the atmosphere-ionosphere system, and for applications in radio propagation/telecommunications, as they are responsible for a significant part of uncertainty of the radio wave propagation condition predictions. (c) 2005 Elsevier Ltd. All rights reserved.