Rayleigh and Sodium Lidar Studies of the Troposphere, Stratosphere and Mesosphere at the Amundsen-Scott South PoleStation

这笔赠款用于分析从1990年在南极运行的钠激光雷达获得的数据，并开始为新的南极激光雷达设施开发改进的激光雷达系统。早期的仪器测量了在每年的平流层臭氧空洞的发展中起重要作用的极地平流层云（PSCs），并测量了中流层顶附近（约90 km高度）钠层的运动，以阐明中间层和低层热层（MALT）区域的动力学。预计拟议中的新激光雷达设施将在意大利南极计划的支持下与罗马大学的同事一起建造。改进后的激光雷达系统将能够测量高空温度，并确定平流层气溶胶的特征，以及探测PSCs和钠层。这些研究对于了解平流层化学和极地臭氧耗竭的原因以及了解MALT区域的动力学是重要的。这将对通过大气区域耦合能量学和动力学（CEDAR）计划做出重大贡献。该项目由美国国家科学基金会极地计划和大气科学部联合支持。

This grant provides funds for the analysis of the data obtained from a sodium lidar the was operated at South Pole throughout 1990 and also to begin the development of improved lidar systems for a new South Pole lidar facility. The earlier instrument made measurements of polar stratospheric clouds (PSCs), which play an important role in the development of the annual stratospheric ozone hole, and also measured the motions of the sodium layer near the mesopause (approximately 90 km altitude) to elucidate the dynamics of the mesosphere and lower thermosphere (MALT) region. It is expected that the proposed new lidar facility will be built in conjunction with colleagues from the University of Rome with the support of the Italian Antarctic Program. The improved lidar systems will be able to measure high altitude temperatures and also determine the characteristics of stratospheric aerosols as well as detect PSCs and the sodium layer. These studies are important for the understanding of stratospheric chemistry and the causes of polar ozone depletion and for understanding the dynamics of the MALT region. There will be a significant contribution to the Coupling of Energetics and Dynamics through Atmospheric Regions (CEDAR) initiative. This project is jointly supported by NSF's Divisions of Polar Programs and Atmospheric Sciences.