CEDAR: Optical Measurements of Mesospheric Gravity Waves and Their Relationship to the Occurrence of In-Situ Temperature Inversions and Vertical Wind Shears

研究人员将使用一组仪器的数据来研究短周期重力波，这些仪器包括一台全天成像仪、一台瑞利激光雷达、一台多普勒干涉仪和一台流星雷达。短周期重力波振荡对地球大气80 ~ 150 km高度区域的动力学有重要贡献。几个重要的参数对波的传播有影响，例如当地的温度和风速。为了充分描述和更彻底地理解波的传播条件，需要这些参数的信息。本研究使用了能够进行此类测量以及数据分析和数值模拟的共同定位仪器。这些仪器位于马萨诸塞州的磨石山天文台附近。联合测量将用于研究夜间中层钠和氧排放中单色重力波的发生与同时发生的温度和风结构之间的关系。这些结果对于理解大气中层的动力学过程以及它们如何受到大气温度和成分的影响具有重要意义。

The investigators will study short period gravity waves using data from a clustered set of instruments, including an all-sky imager, a Rayleigh lidar, a Doppler interferometer, and a meteor radar. Short period gravity waves oscillations contribute significantly to the dynamics in the 80 to 150 km altitude region of Earth's atmosphere. Several important parameters are responsible for wave propagations, such as local temperature and wind velocity. Information about these parameters is needed to describe fully and to understand more thoroughly the wave propagation conditions. This study uses co-located instruments capable of making such measurements along with data analysis and numerical modeling. The instruments are located in the vicinity of the Millstone Hill Observatory in Massachusetts. The joint measurements will be used to investigate the relationship between the occurrence of monochromatic gravity waves in the nighttime mesospheric sodium and oxygen emissions and the simultaneous temperature and wind structure. The results are important for understanding dynamical processes in the middle atmosphere and how they are influenced by the temperature and composition of the atmosphere.