COLLABORATIVE RESEARCH: CEDAR: Mid-latitude Studies of the Middle Atmosphere Using Rayleigh and Raman Lidar

马里兰州大学开发的激光雷达系统 正在犹他州州立大学恢复运作，作为 熊湖天文台（BLO）设施--一个中纬度CEDAR 天文台 激光雷达观测将首先在 高度范围30-70公里，就像以前在学院公园做的那样， 覆盖了平流层上部和中间层下部。 海拔 覆盖范围将扩大，增加一个更强大的 由克莱姆森大学发射的激光，射程可达80公里。 在高海拔地区， 在中层顶附近，这些激光雷达观测将得到补充 由BLO的无源光学仪器完成。 垂直廓线 分子密度和温度将从洁净空气中导出 30公里以上的大气部分，使用瑞利散射 在532 nm处。 这些剖面向下延伸到 Mie（微粒）散射显著增加了激光雷达 返回将采用来自大气分子的拉曼散射。 这些剖面图将用于检查发生，结构， 行星波、潮汐和重力的相互作用和变化 在一个延伸的山脉上方的中层大气中的波 地区 该奖项为PI提供资金，以帮助 系统在BLO运行，并开始测量。

A lidar system developed at the University of Maryland is being restored to operation at Utah State University, as part of the Bear Lake Observatory (BLO) facilities - a mid-latitude CEDAR observatory. Lidar observations will be made initially in the altitude range 30-70 km, as done previously at College Park, covering the upper stratosphere and lower mesosphere. The altitude coverage will be extended with the addition of a more powerful laser by Clemson University upward to 80 km. At higher altitudes, near the mesopause, these lidar observations will be complemented by the passive optical instruments at BLO. Vertical profiles of molecular density and temperature will be derived from clear-air portions of the atmosphere above 30 km, using Rayleigh scattering at 532 nm. The downward extension of these profiles into regions were Mie (particulate) scattering significantly adds to the lidar return will employ Raman scattering from atmospheric molecules. These profiles will be used to examine the occurrence, structure, interaction, and variability of planetary waves, tides, and gravity waves in the middle atmosphere above an extended mountainous region. This award provides funds for the PI to help make the system operational at BLO, and begin measurements.