Subjects: Geosciences >> Space Physics submitted time 2017-03-10
Abstract：利用廊坊站(40.0° N，116.3° E)钠层测温测风激光雷达2011年至2013年共约82h的钠原子数密度和垂直风观测数据，首次分析了廊坊地区中间层顶区域大气重力波耗散引起的钠原子输送作用. 分析得到，90~100 km重力波耗散引起的平均钠原子垂直通量整体为负，钠原子向下输送，在93 km处出现最大负值为-1.47×108 m-3 m/s，85~90 km平均钠原子垂直通量为正，钠原子向上输送，但通量值随高度递减. 钠原子垂直通量方向在90 km处发生转变. 垂直通量随高度的变化造成钠原子汇聚，汇聚效应引起的平均钠原子产生率最大值在91km处达到了1.4×108 m-3/h，该值超过了相同高度上理论模拟的流星烧蚀注入引起的钠原子产生率峰值，说明它对钠层结构的形成具有重要的贡献. 分析结果与美国的观测结果相比，平均钠原子产生率峰值大小相近，但出现高度不同，说明大气重力波耗散引起的物质输送具有较大的地域变化特征. 研究结果可为大气物质输送理论的完善以及大气金属层物理模式的改进提供观测事实参考.
Peer Review Status:
Awaiting Review
Subjects: Geosciences >> Space Physics submitted time 2017-01-22
Abstract： Wind and temperature data detected by the first meteorological rocket of the Meridian Space Weather Monitoring Project was used tostudy quasi-monochromatic inertia gravity waves over Hainan rocket launch site(19.5°N,109°E).The GW extracted from the stratosphere (troposphere)revealed by rocketsonde is upward(downward) GW,both propagate against the background wind.The intrinsic period, vertical wavelength ，horizontal wavelength ，vertical group velocity ,and horizontal group velocity of Stratospheric(Tropospheric)GWare 20.1 h(22.4 h),9.5 km(4 km), 2900 km(753 km) ,0.0887（0.0298）m/s,and12.7（3.65）m/srespectively. There is a significant difference between and because of the background wind. The ratio and is 305:1(188:1) and 143:1(122:1) for the stratospheric(tropospheric) GW, the former is about 1.62(1.17) times of the latter.
Peer Review Status:Awaiting Review
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