EAGER: Exploration of the Source of Polar Mesospheric Summer Echoes at 33 cm Observed with the Poker Flat Incoherent Scatter Radar
EAGER:利用扑克平非相干散射雷达观测到的 33 厘米处极地中层夏季回声的来源探索
基本信息
- 批准号:0907941
- 负责人:
- 金额:$ 5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2009
- 资助国家:美国
- 起止时间:2009-09-01 至 2010-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The investigator will utilize an integrated modeling approach to improve our understanding of Polar Mesosphere summer echoes (PMSE) from the cold summer Mesopause region, at altitudes between about 80-95 km at high polar latitudes.The interest in improving the modeling effort for PMSE has stemmed from recent spectral observations of PMSE, which have been made by the NSF funded Poker Flat Incoherent Scatter Radar (PFISR). The physical characterization of high frequency PMSE is still poorly understood, and more work is required to develop turbulence scattering theories, to help explain the radar observations. The key modeling work relates to dust charging, and how significant it needs to be, as well as the role of turbulence scattering in PMSE formation and evolution. It is also possible that other processes are controlling PMSE, including dusty plasma wave instabilities, which represents a novel approach having received little attention to date from the modeling community.The investigator is involving young undergraduate students, who will participate in the data analysis as well as receive a valuable learning experience. The intellectual merit of this EAGER proposal relates to the exploration of new ideas on dust charging in the Mesopause, and novel, potentially transformative ideas involving dusty plasma instabilities to explain higher frequency PMSE. The required modeling effort is complex and multi-faceted, and thus carries high risk, but also with a high return, in terms of improved scientific understanding of PMSE, which have been considered an important new marker for atmospheric change.
该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。研究者将利用一个综合的建模方法来提高我们对来自寒冷的夏季中层顶区域的极地中间层夏季回波(PMSE)的理解,该区域位于高纬度80-95公里之间。对改进PMSE建模工作的兴趣源于最近由美国国家科学基金会资助的扑克平面非相干散射雷达(PFISR)对PMSE的光谱观测。高频PMSE的物理特性仍然知之甚少,需要更多的工作来发展湍流散射理论,以帮助解释雷达观测。关键的建模工作涉及粉尘充电,以及它需要有多重要,以及湍流散射在PMSE形成和演化中的作用。也有可能是其他过程控制了PMSE,包括尘埃等离子体波的不稳定性,这代表了一种新的方法,迄今为止很少受到建模界的关注。研究者将涉及年轻的本科生,他们将参与数据分析并获得宝贵的学习经验。这一EAGER提案的智力价值涉及探索关于中层顶尘埃充电的新想法,以及涉及尘埃等离子体不稳定性的新颖的、潜在的革命性想法,以解释更高频率的PMSE。所需的建模工作是复杂和多方面的,因此在提高对PMSE的科学理解方面具有高风险,但也具有高回报,PMSE被认为是大气变化的重要新标志。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Marlene Rosenberg其他文献
極低温環境下における微粒子とプラズマの相互作用
低温环境中粒子与等离子体之间的相互作用
- DOI:
- 发表时间:
2009 - 期刊:
- 影响因子:0
- 作者:
関根航;石原修;Marlene Rosenberg - 通讯作者:
Marlene Rosenberg
Complex plasmas in cryogenic environment
低温环境中的复杂等离子体
- DOI:
- 发表时间:
2009 - 期刊:
- 影响因子:0
- 作者:
関根航;石原修;Marlene Rosenberg;O. Ishihara - 通讯作者:
O. Ishihara
Marlene Rosenberg的其他文献
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{{ truncateString('Marlene Rosenberg', 18)}}的其他基金
Collaborative Research: Advancing the Physics of Magnetized Dusty Plasmas
合作研究:推进磁化尘埃等离子体物理学
- 批准号:
1613102 - 财政年份:2016
- 资助金额:
$ 5万 - 项目类别:
Standard Grant
Collaborative Research: Physics of Magnetized Dusty Plasmas
合作研究:磁化尘埃等离子体物理
- 批准号:
1301856 - 财政年份:2013
- 资助金额:
$ 5万 - 项目类别:
Continuing Grant
Collective Behavior of Dusty Plasmas in Space
太空中尘埃等离子体的集体行为
- 批准号:
9420627 - 财政年份:1995
- 资助金额:
$ 5万 - 项目类别:
Continuing Grant
Collective Physics of Dusty Plasmas in Astronomy and Space
天文学和太空中尘埃等离子体的集体物理
- 批准号:
9213836 - 财政年份:1992
- 资助金额:
$ 5万 - 项目类别:
Standard Grant
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