Imaging Science and Modeling Investigations of the Upper Atmosphere

高层大气的成像科学和建模研究

• 批准号: 0623854
• 负责人: Michael Mendillo
• 金额: $ 131万
• 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: 2006
• 资助国家: 美国
• 起止时间: 2006-12-01 至 2012-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0623854&HistoricalAwards=false
• 关键词: Imaging; Science; Modeling; Investigations; Upper

The neutral thermosphere, mesosphere, E-region ionosphere, and F-region ionosphere is observed and modeled in four locations where transient effects present ongoing challenges for accurate aeronomical modeling. The transient phenomena and regions include stable auroral red (SAR) arcs in the sub-auroral trough, equatorial plasma instabilities, mid-latitude ionospheric instabilities, anomalous winds associated with the midnight temperature maximum at low latitudes, and gravity wave generation and transmission at low-to-mid latitudes. Nested instrumentation including all-sky imaging systems, incoherent scatter radars, ionosondes, and entire instrument suites at upper atmospheric facilities are used in the observational research, and comparisons with established Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) and other physics-based models are implemented to isolate shortcomings in our physical understanding relative to observed morphologies.

在四个地点观测和模拟了中性热层、中间层、E区电离层和F区电离层，其中瞬变效应对精确的大气模拟提出了持续的挑战。瞬变现象和瞬变区域包括亚极光槽中稳定的极光红弧、赤道等离子体不稳定、中纬度电离层不稳定、与午夜最高温度有关的低纬异常风以及中低纬重力波的产生和传输。观测研究中使用了包括全天成像系统、非相干散射雷达、电离层探测仪和高层大气设施的整套仪器在内的嵌套仪器，并与已建立的热层-电离层-电动力学大气环流模型(TIEGCM)和其他基于物理的模型进行了比较，以找出我们在物理理解上相对于观测形态的缺陷。