CEDAR: Advancing Meteor Aeronomy, Observations, and Physics

CEDAR：推进流星航空学、观测和物理学

• 批准号: 1042228
• 负责人: Meers Oppenheim
• 金额: $ 30.82万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-12-15 至 2013-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1042228&HistoricalAwards=false
• 关键词: CEDAR; Advancing; Meteor; Aeronomy; Observations

This project is to refine and implement a recently developed technique for estimating the altitude profile of neutral winds in the equatorial mesosphere/lower thermosphere between 85-115 km from high-resolution radar observations of non-specular meteor trails. This effort will utilize incoherent scatter radar (ISR) observations of velocities, deceleration, and change in deceleration of meteoroids acquired from Jicamarca Radio Observatory (JRO) in Peru. The project will include an evaluation of new radar transmission modes for routine wind determination, which will be used to assemble a database of wind estimates. The measurements in turn will be used to create more realistic simulations of meteor trail evolution using a massively parallel, multi-dimensional hybrid numerical code developed over the past several years by the Principle Investigator as well as used to improve neutral density estimates between 80 and 120 km. The simulations and meteor observations will be used to address broad questions regarding the nature of radar scatter from the meteor plasma. This effort will involve participation by multiple graduate and undergraduate students over three institutions.

该项目将完善和实施最近开发的技术，用于估计赤道中层/下热层中中性风的高度分布，从非特定流星径的高分辨率雷达观测值之间的85-115 km之间。 这项工作将利用从秘鲁的Jicamarca无线电天文台（JRO）获取的速度，减速和减速的速度，减速和变化的观察结果。 该项目将包括对新的雷达传输模式的评估，以确定常规风，该模式将用于组装风风估计数据库。 这些测量结果将依次用于创建对流星步道进化的更现实的模拟，使用主要研究者在过去几年中开发的大量平行，多维混合数值代码，并用于改善80至120 km之间的中性密度估计。 模拟和流星观察将用于解决有关流星等离子体雷达散射的性质的广泛问题。 这项工作将涉及多个研究生和本科生的三个机构的参与。