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CEDAR: Establishment of a Resonance Lidar Capability at Sondrestrom, Greenland, for Studies of Metallic Structures in the Upper Atmosphere

CEDAR：在格陵兰岛 Sondrestrom 建立共振激光雷达能力，用于研究高层大气中的金属结构

基本信息

批准号：
9612796
负责人：
Brenton Watkins
金额：
$ 28.69万
依托单位：
University of Alaska Fairbanks Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1997
资助国家：
美国
起止时间：
1997-01-01 至 2000-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612796&HistoricalAwards=false
关键词：
CEDAR Establishment Resonance Lidar Capability

项目摘要

The PI will perform coordinated studies with the radar facility at Sondrestrom, Greenland with a new resonance lidar capability. The lidar and radar will permit new studies of metallic layers in the very high-latitude ionosphere, and complement and extend an existing observational radar program. The radar may determine the occurrence of thin metallic ion layers, as well as the detailed spatial and temporal variations in the electric fields, which play a critical role in metal-layer formation. The lidar will determine altitude profiles of neutral sodium and iron, as well as calcium ions. Watkins will investigate the relative roles of different neutral and ionized metallic structures, and the relevant physical and chemical processes associated with neutral and ion layers. Spatial and temporal structure in ion layers may be determined from antenna scanning experiments with the radar; therefore, making feasible the study of the sodium and iron variability in terms of ion layer structure and temporal behavior. The PI will use the lidar calcium-ion measurements with the radar total-ion measurements and electric field data to determine the relative effects of ion layers with different ion masses, and make detailed comparisons with model simulations of ion-layer formation.

PI将与格陵兰岛Sondrestrom的雷达设施进行协调研究，并具有新的共振激光雷达能力。激光雷达和雷达将允许对高纬度电离层中的金属层进行新的研究，并补充和扩展现有的观测雷达计划。雷达可以确定薄金属离子层的发生，以及电场的详细时空变化，这对金属层的形成起着至关重要的作用。激光雷达将确定中性钠、铁以及钙离子的高度分布图。沃特金斯将研究不同的中性和电离金属结构的相对作用，以及与中性和离子层相关的物理和化学过程。通过雷达天线扫描实验可以确定离子层的时空结构；因此，从离子层结构和时间行为的角度研究钠和铁的变异性是可行的。PI将使用激光雷达钙离子测量、雷达总离子测量和电场数据来确定不同离子质量离子层的相对影响，并与离子层形成的模型模拟进行详细比较。