Airglow and Auroral Studies of the Earth's Upper Atmospheres

研究者将研究中性热层和中间层顶的动力学以及这些区域与电离层等离子体之间的耦合效应。这项研究将使用各种形式的法布里-珀罗干涉仪，通过测量多普勒频移和选定的夜光发射宽度（如原子氧的630纳米线）来确定速度和温度。观测将在匹兹堡大学、秘鲁的阿雷基帕自动气辉天文台和马萨诸塞州的磨石山天文台进行。对多普勒频移和夜光发射线宽度的测定将由改进后的灵敏度更高的法布里-珀罗干涉仪进行。在630.0和577.7 nm处发射禁氧线的新零速度参考源将用于改进低层和高层热层水平和垂直速度的测定。根据这些观测，将推导出各高度的风场和温度场的气候学，并研究各区域之间的耦合效应。

The investigator will study the dynamics of the neutral thermosphere and the mesopause and the coupling effects between these regions and the ionospheric plasma. The study will use various forms of Fabry-Perot interferometers that determine velocities and temperatures from measured Doppler shifts and widths of selected nightglow emissions such as the 630 nm line of atomic oxygen. Observations will be made at the University of Pittsburgh, at the Arequipa Automated Airglow Observatory in Peru, and at the Millstone Hill Observatory in Massachusetts. Determinations of Doppler shifts and widths of nightglow emission lines will be made by upgraded Fabry-Perot interferometer instruments with improved sensitivity. A new zero velocity reference source emitting the forbidden oxygen lines at 630.0 and 577.7 nm will be used for improved lower and upper thermosphere horizontal and vertical velocity determinations. From these observations, the climatology of the wind and temperature fields at each altitude will be deduced and coupling effects between the regions will be studied.