Collaborative Research: CEDAR: Identifying Sources of Mid-latitude Traveling Ionospheric Disturbances

合作研究：CEDAR：识别中纬度移动电离层扰动的来源

• 批准号: 1452329
• 负责人: Sharon Vadas
• 金额: $ 6.42万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1452329&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Identifying; Sources

Gravity waves (GWs) originating from lower atmospheric sources can lead to large accelerations of the background flow through wave dissipation or breaking. The accelerations produce secondary GWs with longer wavelengths, allowing them to propagate farther upward into the ionosphere. Here, through interaction with the ionospheric plasma, they are visible in the form of optical signatures in red line (630 nm) images, and are often referred to as traveling ionospheric disturbances (TIDs). A broad array of optical imagers will be used to triangulate the lower atmospheric sources for F region GWs, quantifying the GWs by numerically modeling the same optical signatures, and then using this quantification to ray-trace the secondary GWs to reveal their altitude profile of momentum deposition. This effort will connect two critical points on the coupled path: from the lower atmospheric source to momentum deposition in the mid to upper thermosphere. This project will include outreach to students at rural high schools where the instruments will be deployed. It will also provide undergraduate students opportunities to participate in data analysis and interpretation.

起源于低大气来源的重力波（GWS）会导致背景流通过波浪耗散或破裂的大加速度。这些加速度产生的次级GWS具有较长的波长，使它们可以向上向上传播到电离层。在这里，通过与电离层等离子体的相互作用，它们以红线（630 nm）图像的光学特征的形式可见，通常称为行进电离层扰动（TIDS）。 一系列广泛的光学成像器将用于三角剖分F区GWS的低大气源，通过数值对相同的光学签名进行建模，然后使用此量化来量化GWS，然后使用此量化来示意二级GWS，以揭示其动量沉积的高度概况。这项工作将在耦合路径上连接两个临界点：从下部大气源到中部热层中动量沉积。该项目将包括向将要部署工具的农村高中学生的宣传。它还将为大学生提供参与数据分析和解释的机会。