CEDAR/TIMED: An Intensive Co-located Intercomparison of Radar and Optical Wind and Temperature Measurements in the Mesopause Region

ATM 9872814 abs研究人员将进行两次扩展测量活动，涉及流星和中频雷达、CCD光谱仪和激光雷达。 目的是研究30和40兆赫全天空流星雷达，中频雷达在普拉特维尔大气观测站，钠激光雷达位于科罗拉多州立大学之间的水平风测量的系统偏差。 此外，通过同步测量，研究人员将验证一种使用流星雷达数据确定中层顶温度的新技术。 仪器将在两个月内尽可能多的夜晚运行，一个在夏季，一个在冬季。 将使用统计技术进行比较，以客观、定量地确定各种技术的中性风和温度测量中存在的任何系统性偏差。其结果将有助于CEDAR/TIMED计划。CEDAR代表耦合，能量学和大气区域动力学，是一个全球变化计划，将理论建模与地面测量相结合，以研究高层大气和电离层。 TIMED（Thermosphere，Ionosphere，Mesosphere Energetics and Dynamics）是美国国家航空航天局的一个卫星计划，用于研究类似的大气层区域。 CEDAR/TIMED联合方案旨在协调地面和空间观测，以更好地了解低热层和电离层的物理过程。

ATM9872814absThe investigators will conduct two extended measurement campaigns involving meteor and medium frequency radars, a CCD spectrograph, and a lidar. The objective is to study systematic biases in horizontal wind measurements between the 30 and 40 MHz all-sky meteor radars, and the medium frequency radar at Platteville Atmospheric Observatory, and a sodium lidar located at Colorado State University. Also, by making coincident measurements, the investigators will validate a new technique for determining mesopause temperatures using meteor radar data. The instruments will be operated for as many nights as possible during two months, one in summer and one in winter. The comparison will be conducted using statistical techniques to provide an objective, quantitative determination of any systematic biases that exist in neutral wind and temperature measurements from the various techniques. The results will contribute to the CEDAR/TIMED program. CEDAR, which stands for Coupling, Energetics, and Dynamics of Atmospheric Regions, is a global change program that combines theoretical modeling with ground-based measurements to study the upper atmosphere and ionosphere. TIMED, for Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics, is a NASA satellite program to study similar regions of the atmosphere. The joint CEDAR/TIMED program aims to coordinate ground-based and space-based observations to achieve better understanding of physical processes in the lower thermosphere and ionosphere.