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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

基本信息

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

项目摘要

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。