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The Nonlinear Model of the Response of Airglow to Gravity Waves 总被引:1,自引:0,他引:1
A.V.Mikhalev 《空间科学学报》2005,25(5):490-495
In this paper, we develope a time-dependent, nonlinear, photochemical-dynamical 2-D model which is composed of 3 models: dynamical gravity wave model, middle atmospheric photochemical model, and airglow layer photochemical model. We use the model to study the effect of the gravity wave propagation on the airglow layer. The comparison between the effects of the different wavelength gravity wave on the airglow emission distributions is made. When the vertical wavelength of the gravity wave is close to or is shorter than the thickness of the airglow layer, the gravity wave can make complex structure of the airglow layer, such as the double and multi-peak structures of the airglow layers. However, the gravity wave that has long vertical wavelength can make large scale perturbation of the airglow emission distribution. 相似文献
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利用一维光化、辐射耦合模式研究了人为活动所排放出的废弃物CH4、N2O和CO2含量增加对高平流层,中间层大气的影响。结果指出,对流层中这些气体增加一倍将导致上中层大气水汽、O3和温度的明显变化。CO2含量增加将使上中层温度降低约10K;而CH4含量的加倍不仅使中层顶附近水汽含量增加50%以上,也使其温度有更明显的下降,这将更有利于於光云的形成。 相似文献
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将太阳光子作为反应物引入电离层化学反应中, 运用化学热力学方法, 获得低电离层光化学反应的反应度及其化学平衡常数, 进而得到低电离层的电子密度, 并通过统计物理方法推导出相应的化学平衡常数. 结果显示, 运用热力学方法得到的低电离层电子密度与Chapman理论几乎完全一致, 表明利用热力学方法研究电离层的形成是可行的. 分别用热力学方法和统计物理方法得到的平衡常数之间存在一定的差异, 分析表明, 这是因为光化学过程中并非所有光子能量都转化成了电离能, 其中有一部分能量转化为热能或使粒子处于激发态, 这种差异的存在使利用统计物理方法推导电离层等离子体温度成为可能. 相似文献
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《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2023,71(6):2770-2780
A modified derivation of the criterion of nighttime ozone chemical equilibrium (NOCE) in the mesopause region is presented. According to 3D model calculations, the improved criterion reproduces the lower boundary of the equilibrium much better than its earlier version. Processing of the SABER/TIMED data of 2021 has shown that the modified criterion elevates the NOCE boundary by ~ 0.1–1.7 km, depending on latitude and season. The proposed method of determining the condition of chemical equilibrium can be used to analyse the equilibrium of many trace gases in the stratosphere and troposphere important for different practical applications. 相似文献
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