A numerical study of the effect of gravity‐wave propagation on minor species distributions in the mesopause region
A numerical study of the effect of gravity‐wave propagation on minor species distributions in the mesopause region
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DOI：
10.1029/2001jd001570
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发表时间：
2003-02
影响因子：
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通讯作者：
Jiyao Xu;Anne K. Smith;R. Ma
中科院分区：
文献类型：
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作者：
Jiyao Xu;Anne K. Smith;R. Ma
[1]本文发展了一个光化学动力学引力波模型，并应用于非破碎传播的引力波对中层顶区化学组分分布的影响。该模型是随时间变化的，二维的，非线性的，非静力学的，它包括非绝热过程产生的光化学和重力波对大气化学物种的影响。该模型模拟了在波的存在下瞬间氧和氢化合物的分布的变化，并确定了波包通过该区域后对成分的残余影响。结果表明，重力波在中层顶区传播时，即使波没有破碎，也会影响化学组分的平均分布。夜间的相对扰动比白天大。在动力波传播出该区域后，化学密度扰动持续了几个小时。
[1] A photochemical-dynamical gravity-wave model is developed in this paper and is applied to the impact of a nonbreaking propagating gravity wave on chemical species distributions in the mesopause region. The model is time-dependent, two-dimensional, nonlinear, and nonhydrostatic; it includes diabatic processes produced by photochemistry and the effects of the gravity wave on atmospheric chemical species. The model simulates the changes to the distributions of oxygen and hydrogen compounds instantaneously in the presence of the wave and also determines the residual effect on composition after the wave packet has passed through the region. The results indicate that a gravity wave propagating through the mesopause region influences the mean distributions of chemical species even if the wave does not break. The relative perturbations are larger during night than during daytime. The chemical density perturbations persist for several hours after the dynamical wave has propagated out of the region.