CEDAR: Simultaneous Digital Ionosonde and Mapping Tilting Filter Photometer Studies of the Precipitation of Conjugate Photoelectrons into the Mid-latitude Winter Thermosphere
CEDAR: Simultaneous Digital Ionosonde and Mapping Tilting Filter Photometer Studies of the Precipitation of Conjugate Photoelectrons into the Mid-latitude Winter Thermosphere
批准号:
9979268
负责人:
John Meriwether
金额:
$11.75万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2000
资助国家:
美国
项目状态:
已结题
起止时间:
2000-03-01 至 2004-02-29
中文摘要
研究人员将把对黄昏时原子氧发射的测量与数字电离层探空仪的测量结合起来,研究沉淀共轭光电子对即将到来的太阳高峰期太阳和地磁活动变化的响应,并将结果与场对准半球间等离子体(FLIP)模型的预测进行比较。这些观测包括对克莱姆森大气研究实验室两个冬天的630纳米和844.6纳米原子氧气辉发射率的光度测量。通过从光度计观测中减去局域发射的模型估计值,确定了由共轭光电子碰撞引起的630 nm处的发射率。这些结果和观测到的844.6 nm发射将与共轭光电子通量产生的夜辉增强的反转预测进行比较。这些结果将提供关于等离子体层透明度随纬度或经度或太阳和地磁活动变化的可能情况的洞察。
英文摘要
Meriwether, John W.ATM9979268absThe investigators will combine measurements of atomic oxygen emissions during twilight with digital ionosonde measurements to study the response of precipitating conjugate photoelectrons to variations in solar and geomagnetic activity during the upcoming solar maximum period, and to compare the results with predictions from the Field-aligned Interhemispheric Plasma (FLIP) model. The observations consist of photometric measurements of the 630 and 844.6 nm atomic oxygen airglow emission rates over two winters at the Clemson Atmospheric Research Laboratory. The emission rate at 630 nm caused by conjugate photoelectron impact is determined by subtraction of the model estimate for the local emission from the photometer observations. These results and the observed 844.6 nm emissions would be compared with the FLIP predictions of nightglow enhancements generated by conjugate photoelectron fluxes. These results would provide insight as to possible plasmasphere variations of transparency with latitude or longitude or with changes in solar and geomagnetic activity.
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Collaborative Research: CEDAR: Multi-site Fabry-Perot Interferometer Measurements of Thermospheric Neutral Winds and Temperatures in Western South America
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批准号:2230439
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项目类别:Continuing Grant
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资助金额:$18.42万
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财政年份:2022
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负责人:John Meriwether
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依托单位:
MRI: Acquisition of a state-of-the-art Fabry-Perot interferometer to measure upper atmosphere winds and temperatures for He, OH, and O nightglow and auroral emissions
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批准号:2215857
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项目类别:Standard Grant
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资助金额:$58.73万
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财政年份:2022
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负责人:John Meriwether
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依托单位:
Collaborative Research: CEDAR--Application of the RENOIR System in Brazil to Study the Gravity Wave Trigger Mechanism In the Production of Equatorial Spread F and Scintillations
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批准号:0940217
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项目类别:Continuing Grant
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资助金额:$15.38万
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财政年份:2010
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负责人:John Meriwether
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依托单位:
Collaborative Research: CEDAR--Experimental and Modeling Study of Mesoscale Ion-Neutral Coupling in the Auroral Thermosphere
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批准号:0640641
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项目类别:Continuing Grant
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资助金额:$33.91万
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财政年份:2007
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负责人:John Meriwether
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依托单位:
Fabry-Perot Studies of Equatorial Thermospheric Dynamics and Composition, Part II
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批准号:0634671
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项目类别:Continuing Grant
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资助金额:$47.95万
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财政年份:2007
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负责人:John Meriwether
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依托单位:
The Midnight Temperature Maximum: New Studies of Ion-Neutral Coupling at Low Latitudes with a State-of-the-Art FPI, All Sky Imaging, the Arecibo ISR, and NCAR/TIEGCM Modeling
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批准号:0403786
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2004
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负责人:John Meriwether
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依托单位:
CEDAR: Optical Measurements of Daytime Thermospheric Dynamics and Nighttime Mesospheric and Thermospheric Dynamics at the Magnetic Equator
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批准号:0228634
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项目类别:Continuing Grant
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资助金额:$31.24万
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财政年份:2003
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负责人:John Meriwether
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依托单位:
SGER: Daytime Optical and Radar Measurements at Millstone Hill Observatory
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批准号:0235443
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项目类别:Standard Grant
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资助金额:$5.5万
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财政年份:2002
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负责人:John Meriwether
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依托单位:
Fabry-Perot Studies of Equatorial Thermospheric Dynamics and Composition
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批准号:0132600
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项目类别:Continuing Grant
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资助金额:$24.25万
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财政年份:2002
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负责人:John Meriwether
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依托单位:
CEDAR/TIMED: Southern-Hemisphere Mesopause Winds, Temperatures, and OH/557.7 nm Airglow Intensities
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批准号:9872807
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项目类别:Standard Grant
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资助金额:$2.98万
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财政年份:1999
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负责人:John Meriwether
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依托单位:
CEDAR: Case Studies of the Mesosphere Inversion Layer Using Starfire and Millstone Hill Lidar Measurements of Mesosphere Winds and Temperatures
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批准号:9873179
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项目类别:Continuing Grant
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资助金额:$6.73万
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财政年份:1999
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负责人:John Meriwether
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依托单位:
CEDAR: Multi-Instrument Studies of Equatorial Aeronomy (MISETA); Continued Measurements of Equatorial Upper Atmosphere Winds with a Fabry-Perot Interferometer
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批准号:9523987
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项目类别:Continuing Grant
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资助金额:$12.94万
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财政年份:1996
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负责人:John Meriwether
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依托单位:
CEDAR: Multi-Instrument Studies of Mesosphere and Lower Thermosphere Coupling Using the Firepond Telescope and the Clemson Laser
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批准号:9523979
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项目类别:Standard Grant
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资助金额:$3.0万
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财政年份:1996
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负责人:John Meriwether
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依托单位:
Collaborative Research: Lidar Studies of Middle Atmosphere Dynamics (CEDAR)
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批准号:9302128
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项目类别:Continuing Grant
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资助金额:$8.0万
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财政年份:1993
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负责人:John Meriwether
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依托单位:
Collaborative Research: CEDAR: Mid-latitude Studies of the Middle Atmosphere Using Rayleigh Scatter Lidar
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批准号:9202793
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项目类别:Standard Grant
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资助金额:$4.0万
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财政年份:1992
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负责人:John Meriwether
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依托单位:
CEDAR: Multi-instrumented Studies of Equatorial Thermosphere Aeronomy (MISETA): Fabry Perot Measurements at Arequipa, Peru
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批准号:9201841
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项目类别:Continuing Grant
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资助金额:$19.08万
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财政年份:1992
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负责人:John Meriwether
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依托单位:
Ground-Based Column Content Measurements of Nitrogen Oxides,Aerosols, and Ozone in the Arctic Polar Night by Lunar Absorption Spectroscopy
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批准号:8614802
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项目类别:Standard Grant
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资助金额:$3.5万
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财政年份:1987
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负责人:John Meriwether
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依托单位:
Experimental and Theoretical Investigations in Aeronomy
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批准号:8514647
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项目类别:Continuing Grant
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资助金额:$39.71万
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财政年份:1985
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负责人:John Meriwether
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依托单位:
High Resolution Interferometry Study Committee
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批准号:8505441
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项目类别:Standard Grant
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资助金额:$1.35万
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财政年份:1985
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负责人:John Meriwether
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依托单位:
Study Team to Assess Future Directions of High Resolution Interferometry
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批准号:8501398
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项目类别:Standard Grant
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资助金额:$0.85万
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财政年份:1985
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负责人:John Meriwether
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依托单位:
海外基金