| 项目编号: | 1452357
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| 项目名称: | Collaborative Research: CEDAR: Identifying Sources of Mid-latitude Traveling Ionospheric Disturbances |
| 作者: | Asti Bhatt
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| 承担单位: | SRI International
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD293240
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | atmospheric source
; ionospheric disturbance
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| 英文摘要: | 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. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94089
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Asti Bhatt. Collaborative Research: CEDAR: Identifying Sources of Mid-latitude Traveling Ionospheric Disturbances. 2014-01-01.
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