CEDAR: Development and Optimization of Tomographic Imaging Methods for Advanced Gravity Wave Studies in the Mesospheric and Lower Thermospheric (MLT) Region

两个全天空成像仪对OH夜光进行采样，最初定位在犹他州北部和怀俄明州地区。这些成像仪根据观测几何图形生成清晰的全天图像，然后对这些图像进行层析反演，生成中层上层短周期（不到一小时）重力波的二维强度图。利用实际气辉数据，将经典代数层析反演和随机代数层析反演与系统（积分）层析模型和几何层析模型进行了比较，找出了利用两台OH成像仪提取波浪结构的最佳技术。最后，通过对OH气辉、O2气辉和OI气辉的同步测量，扩展到中高层和低层热层的波动和垂直结构的三维描述，这些气辉来自80-155 km之间的不同层。

Two all-sky imagers sampling the OH nightglow are initially positioned in the Northern Utah, and Wyoming region. These imagers generate all-sky images distinct by virtue of observation geometry, which are then tomographically inverted to produce two-dimensional intensity maps of short period (less one hour) gravity waves in the upper mesosphere. Classical algebraic tomographic inversions and stochastic inversion algebraic inversions are compared with system (integral) and geometric tomographic models using the actual airglow data to isolate the best technique for wave structure extraction using two OH imagers. Extension to 3-dimension descriptions of wave motion and vertical structure in the upper mesosphere and lower thermosphere is finally accomplished using coincident measurements of the OH airglow, the O2 airglow, and the OI airglow - which arise from different layers between 80-155 km.