Triplett Colin C, Immel Thomas J, Wu Yen-Jung, Cullens Chihoko
Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA.
Adv Space Res. 2019 Nov 15;64(10):1841-1853. doi: 10.1016/j.asr.2019.08.015. Epub 2019 Aug 23.
Large scale waves, such as the atmospheric tides and ultra-fast Kelvin waves (UFKW), have direct effects on the neutral wind and temperature fields of the ionosphere-thermosphere (I-T) system. In this study we examine the response of the I-T system to the atmospheric tides, one UFKW, and the secondary waves generated from their interactions using the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM). We find that forcing an UFKW at the lower boundary of the TIEGCM is all that is required for it to setup in the model. We see variations around 10% in the zonal winds that lead to similar variations in the total electron content (TEC) depending on the phase of the UFKW. From these simulations, we expect the Ionospheric Connection Explorer (ICON) mission will be able to fully capture these wave interactions by observing winds and temperatures at the mesopause and above.
大规模波动，如大气潮汐和超快速开尔文波（UFKW），对电离层-热层（I-T）系统的中性风场和温度场有直接影响。在本研究中，我们使用热层-电离层-电动力学通用环流模型（TIEGCM），研究I-T系统对大气潮汐、一个UFKW以及它们相互作用产生的二次波的响应。我们发现，在TIEGCM的下边界强迫一个UFKW，是使其在模型中建立起来所需要的全部条件。我们看到纬向风有10%左右的变化，这会导致总电子含量（TEC）根据UFKW的相位产生类似的变化。从这些模拟中，我们预计电离层连接探测器（ICON）任务将能够通过观测中间层顶及以上的风和温度，充分捕捉这些波的相互作用。
