Collaborative Research: Establishing an Iron Resonance Wind-Temperature Lidar at High-Frequency Active Auroral Research Program (HAARP) for Active Studies of Polar Aeronomy

合作研究：在高频主动极光研究计划（HAARP）中建立铁共振风温激光雷达，以积极研究极地航空学

• 批准号: 2048422
• 负责人: Wayne Scales
• 金额: $ 28.52万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2048422&HistoricalAwards=false
• 关键词: Collaborative; Research; Establishing; Iron; Resonance

The award supports a collaborative effort between researchers at the University of Alaska Fairbanks (UAF), Cornell University, G & A Technical Software Incorporated (GATS), the University of Colorado Denver (CU Denver), Virginia Polytechnic Institute and State University (VTech), and the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR) to build a state-of-the-art solid-state iron resonance wind and temperature lidar system (IRWTL) and to operate this instrument at the high-frequency active auroral research program (HAARP) facility located in Gakona, Alaska (62°N, 145°W). This instrument will be used to conduct a series of coordinated observations with the Ionospheric Research Instrument (IRI) at HAARP that will be operated in campaign mode centering upon three major heating experiments. The Arctic atmosphere and the subauroral region are a natural laboratory for understanding plasma-neutral and dynamical coupling in the atmosphere and geospace. The lidar will measure the profile of the ion-neutral collision frequency needed for the determination of D-region electron density profiles from IRI HF radar data. A second application of coordinated IRWTL and IRI measurements is aimed at the investigation of the charge transfer mechanisms in dusty plasmas based on lidar observations of polar mesospheric clouds and radar observations of polar mesospheric summer echoes. These coordinated measurements will also study the dynamical forcing of E-region winds using the technique of radar artificial periodic irregularities. The combined IRWTL and IRI observations will be used to study D-region structure as determined from the data collected from the detection of ELF/VLF waves generated by the IRI facility. These studies will have a variety of broader impacts including the study of fundamental processes in plasma physics, aerosols, fluid dynamics while advancing radio science and remote sensing technology and techniques. The award will support research training and professional development of graduate students and two postdoctoral associates. The IRWTL will support the participation of both UAF undergraduate students and visiting students in scientific investigations and engineering projects. This effort fosters collaboration between three universities, an aerospace company, and a national space center.The IRWTL lidar system will enhance the HAARP research infrastructure as a state-of-the-art solid state resonance lidar system using a frequency-stabilized Nd:YAG laser to achieve atmospheric illumination at the iron resonance emission wavelength at 372 nm. During geomagnetically active periods the auroral electrojet and auroral precipitation occur overhead at the HAARP site facilitating HF heating experiments to higher altitude ranges than otherwise would be the case. The IRWTL observations will yield new wind and temperature measurements in the mesosphere-lower thermosphere in both daytime and nighttime throughout the year; these results would be compared with similar wind and temperature observations obtained at the Poker Flat sodium resonance wind and temperature lidar system located in central Alaska to search for evidence of large scale structure in polar mesospheric winds. The observations, analyses and results of this activity will contribute to national and international programs, including CEDAR and SCOSTEP programs.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

The award supports a collaborative effort between researchers at the University of Alaska Fairbanks (UAF), Cornell University, G & A Technical Software Incorporated (GATS), the University of Colorado Denver (CU Denver), Virginia Polytechnic Institute and State University (VTech), and the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR) to build a最先进的固态铁共振风和温度激光雷达系统（IRWTL），并在位于阿拉斯加Gakona的高频主动极光研究计划（HAARP）设施（62°N，145°W）操作该仪器。该工具将用于与HAARP的电离层研究工具（IRI）进行一系列协调的观测，该观察将以三个主要的供暖实验为中心的运动模式下运行。北极气氛和下回区域是一个自然实验室，用于理解大气和地理空间中血浆中性和动态耦合。 LIDAR将测量从IRI HF雷达数据确定D-区域电子密度曲线所需的离子中性碰撞频率的轮廓。基于极性中层云的激光观测和极性中层夏季回声的雷达观察结果，第二次应用了协调的IRWTL和IRI测量值的旨在研究尘土飞扬的电荷转移机制。这些协调的测量还将使用雷达人工周期性不规则技术来研究电子区风的动态强迫。合并后的IRWTL和IRI观察结果将用于研究根据IRI设施产生的ELF/VLF波收集的数据确定的D-Region结构。这些研究将产生更广泛的影响，包括研究等离子体物理学，气溶胶，流体动力学的基本过程，同时推进无线电科学以及遥感技术和技术。该奖项将支持研究生和两名博士后同事的研究培训和专业发展。 IRWTL将支持UAF本科生的参与，并拜访学生参与科学研究和工程项目。这项工作促进了三所大学，一家航空航天公司和国家航天中心之间的合作。IRWTL激光雷达系统将通过使用频率稳定的ND：YAG激光器来增强HAARP研究基础架构，作为最先进的固态共振liDAR系统，以实现Ironance Ressionance Susission Susission Susission Susission st 372 nm的大气照明。在地球上活跃的时期内，极光电流和极光降水在HAARP部位上发生在头顶上，促进了HF加热实验至高度范围更高的情况。 IRWTL观察结果将在全年的白天和夜间中的中层热层中产生新的风和温度测量。这些结果将与位于阿拉斯加中部的扑克平坦钠共振风和温度激光剂系统获得的类似的风和温度观测结果进行比较，以寻找极地层层风中大规模结构的证据。这项活动的观察，分析和结果将有助于包括Cedar和Scostep计划在内的国家和国际计划。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响评估审查标准，认为通过评估被认为是宝贵的支持。