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

合作研究：CEDAR：使用瑞利和拉曼激光雷达对中层大气进行中纬度研究

• 批准号: 9203034
• 负责人: Vincent Wickwar
• 金额: $ 2.5万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9203034&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; CEDAR; Mid; latitude

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.

马里兰州大学开发的激光系统正在恢复到犹他州立大学的运营，这是熊湖天文台（BLO）设施的一部分 - 中纬度雪松天文台。 LIDAR观察最初将在30-70公里的高度范围内进行，如先前在大学公园所做的那样，覆盖了上层平流层和下层层。 克莱姆森大学（Clemson University）增加了更强大的激光，将扩大高度的覆盖范围。 在较高的海拔高度，在介质附近，这些激光雷达的观察将得到BLO的被动光学仪器的补充。 分子密度和温度的垂直轮廓将使用532 nm处的瑞利散射从30 km以上的透明空气中得出。 这些剖面向区域的向下延伸是MIE（颗粒）散射显着增加了激光雷达回报的散射，将采用大气分子的拉曼散射。 这些轮廓将用于检查行星波，潮汐，潮汐和重力波的发生，结构，相互作用和变异性，在延伸的山区上方的中间大气中。 该奖项为PI提供了资金，以帮助使系统在BLO上运行，并开始测量。