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  • Xu Zhou, ZeZhong Li, XinAn Yue, LiBo Liu. 24: Effects of Mesoscale Gravity Waves on the Sporadic E Simulated by a One-Dimensional Dynamical Model. Earth and Planetary Physics. DOI: 10.26464/epp2024038
    Citation: Xu Zhou, ZeZhong Li, XinAn Yue, LiBo Liu. 24: Effects of Mesoscale Gravity Waves on the Sporadic E Simulated by a One-Dimensional Dynamical Model. Earth and Planetary Physics. DOI: 10.26464/epp2024038
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Effects of Mesoscale Gravity Waves on the Sporadic E Simulated by a One-Dimensional Dynamical Model

  • Besides driven by tidal winds, the Es layers are also modulated by gravity waves (GWs), while the effects are not yet comprehensively understood. This paper discusses the effects of the mesoscale GWs on the sporadic E (Es) layers, using a newly developed model, MISE-1D (1-Dimensional Model of Ionospheric Sporadic E), with low numerical dissipation and high resolution. Driven by the wind fields resolved by the high-solution version of the Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM-X), the MISE-1D simulation revealed that GWs significantly influence the evolution of the Es layer above 100 km but have a very limited effect at lower altitudes. The effects of GWs are diverse and complex, generally including the generation of fluctuating wave-like structures on the Es layer with frequencies similar to those of the GWs. The mesoscale GWs can also cause increases in the density of Es layers, or disperse/diffuse the Es layers and increase their thickness. In addition, the presence of GWs is also a key factor in sustaining the Es layers in some cases.
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