CEDAR: Lidar Studies of the Arctic Middle Atmosphere at Poker Flat, Alaska

该合同将支持在阿拉斯加费尔班克斯附近的Poker Flat研究范围部署共振激光雷达。激光雷达将提供从对流层上层到低层热层的北极中层大气的测量数据。激光雷达利用分子、气溶胶和金属原子的散射来测量密度、温度、气溶胶反向散射比以及平流层和中间层中的金属密度。这些测量将用于解决当前研究兴趣的几个主题：气溶胶在高纬度平流层化学中的作用，极地中间层中气溶胶的出现，低层中间层和平流层的温度结构，中间层金属层的结构，以及中流层区域波浪和潮汐的特征。激光雷达测量将由在Poker Flat研究范围内进行的各种大气和极光研究来补充。

This award will support the deployment of a resonance lidar at the Poker Flat Research Range near Fairbanks, Alaska. The lidar will provide measurements of the arctic middle atmosphere from the upper troposphere to the lower thermosphere. The lidar employs scattering from molecules, aerosols, and metal atoms to yield measurements of density, temperature, aerosol backscatter ratio, and metal density in the stratosphere and mesosphere. The measurements will be used to address several topics of current research interest: the role of aerosols in the chemistry of the high latitude stratosphere, the occurrence of aerosols in the polar mesosphere, the temperature structure of the lower mesosphere and stratosphere, the structure of the mesospheric metal layers, and the characteristics of waves and tides in the mesopause region. The lidar measurements will be complemented by a variety of studies of the atmosphere and the aurora being conducted at the Poker Flat Research Range.