CEDAR: Optical Measurements of Daytime Thermospheric Dynamics and Nighttime Mesospheric and Thermospheric Dynamics at the Magnetic Equator

CEDAR:磁赤道白天热层动力学和夜间中层和热层动力学的光学测量

基本信息

  • 批准号:
    0228634
  • 负责人:
  • 金额:
    $ 31.24万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2003
  • 资助国家:
    美国
  • 起止时间:
    2003-03-01 至 2006-02-28
  • 项目状态:
    已结题

项目摘要

The investigators will operate a Second-generation Optimized Fabry-Perot Doppler Imager (SOFDI) at the Huancayo Geophysical Observatory in Peru to measure mesospheric and thermospheric winds. The main objective is to determine the way in which zonal wind direction is linked to the occurrence of equatorial spread-F and scintillations at the magnetic equator. A problem in understanding the complex electrodynamics of the equatorial region has been to explain the day-to-day variability of the effects of the disturbed ionosphere, represented by the phenomena of bubbles, scintillations, bottomside spread F, and equatorial spread F. While other factors play a role in these phenomena, the change in the semi-diurnal thermospheric tidal activity that modulates the speed of the zonal wind across the evening twilight terminator may be a key factor. Such variations of the zonal wind speed may affect the timing for the development of the F-region dynamo and modify the likelihood of the development of plasma instabilities. The SOFDI instrument is designed for both nighttime and dayglow measurements of airglow intensities and atmospheric winds and temperatures at remote locations. The observations will be made in coordination with an all-sky imager and the Jicamarca incoherent scatter radar. The investigators will also investigate the possible effects of atmospheric gravity waves on irregularity growth. Irregularities in the equatorial ionosphere produce scintillations that affect the operation of navigation and communications systems. This study will help develop models that can forecast the occurrence of scintillations to protect these systems from deleterious space weather effects.
研究人员将在秘鲁的万卡约地球物理观测站操作第二代优化法布里-佩罗多普勒成像仪(SOFDI)来测量中间层和热层风。主要目的是确定纬向风向与赤道扩散f和磁赤道闪烁的发生之间的联系方式。理解赤道地区复杂电动力学的一个问题是如何解释受扰动电离层影响的日变化,这些影响以气泡、闪烁、底部扩散F和赤道扩散F等现象为代表。虽然其他因素在这些现象中起作用,但调节穿越傍晚暮光终结线的纬向风速度的半日热层潮汐活动的变化可能是一个关键因素。纬向风速的这种变化可能会影响f区发电机发展的时机,并改变等离子体不稳定性发展的可能性。SOFDI仪器设计用于在夜间和白天测量偏远地区的气辉强度、大气风和温度。观测将与全天成像仪和Jicamarca非相干散射雷达协调进行。研究人员还将调查大气重力波对不规则增长的可能影响。赤道电离层的不规则现象产生的闪烁会影响导航和通信系统的运行。这项研究将有助于开发能够预测闪烁发生的模型,以保护这些系统免受有害的空间天气影响。

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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John Meriwether其他文献

Short Wave Infrared Imaging for Auroral Physics and Aeronomy Studies
用于极光物理和航空学研究的短波红外成像
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0.5
  • 作者:
    T. S. Trondsen;John Meriwether;C. Unick;Andrew Gerrard;Matthew Cooper;Devin Wyatt
  • 通讯作者:
    Devin Wyatt

John Meriwether的其他文献

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{{ truncateString('John Meriwether', 18)}}的其他基金

Collaborative Research: CEDAR: Multi-site Fabry-Perot Interferometer Measurements of Thermospheric Neutral Winds and Temperatures in Western South America
合作研究:CEDAR:南美洲西部热层中性风和温度的多站点法布里-珀罗干涉仪测量
  • 批准号:
    2230439
  • 财政年份:
    2022
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
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
MRI:购买最先进的法布里-珀罗干涉仪来测量高层大气风和 He、OH、O 夜光和极光发射的温度
  • 批准号:
    2215857
  • 财政年份:
    2022
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Standard Grant
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
合作研究:CEDAR——应用巴西RENOIR系统研究赤道扩散F和闪烁产生中的重力波触发机制
  • 批准号:
    0940217
  • 财政年份:
    2010
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
Collaborative Research: CEDAR--Experimental and Modeling Study of Mesoscale Ion-Neutral Coupling in the Auroral Thermosphere
合作研究:CEDAR——极光热层中尺度离子中性耦合的实验和模拟研究
  • 批准号:
    0640641
  • 财政年份:
    2007
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
Fabry-Perot Studies of Equatorial Thermospheric Dynamics and Composition, Part II
赤道热层动力学和成分的法布里-珀罗研究,第二部分
  • 批准号:
    0634671
  • 财政年份:
    2007
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
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
午夜最高温度:利用最先进的 FPI、全天空成像、阿雷西博 ISR 和 NCAR/TIEGCM 建模对低纬度离子中性耦合进行新研究
  • 批准号:
    0403786
  • 财政年份:
    2004
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
SGER: Daytime Optical and Radar Measurements at Millstone Hill Observatory
SGER:磨石山天文台的白天光学和雷达测量
  • 批准号:
    0235443
  • 财政年份:
    2002
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Standard Grant
Fabry-Perot Studies of Equatorial Thermospheric Dynamics and Composition
赤道热层动力学和成分的法布里-珀罗研究
  • 批准号:
    0132600
  • 财政年份:
    2002
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
CEDAR: Simultaneous Digital Ionosonde and Mapping Tilting Filter Photometer Studies of the Precipitation of Conjugate Photoelectrons into the Mid-latitude Winter Thermosphere
CEDAR:同步数字电离探空仪和映射倾斜滤光光度计研究共轭光电子进入中纬度冬季热层的沉淀
  • 批准号:
    9979268
  • 财政年份:
    2000
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Continuing Grant
CEDAR/TIMED: Southern-Hemisphere Mesopause Winds, Temperatures, and OH/557.7 nm Airglow Intensities
CEDAR/TIMED:南半球中层顶风、温度和 OH/557.7 nm 气辉强度
  • 批准号:
    9872807
  • 财政年份:
    1999
  • 资助金额:
    $ 31.24万
  • 项目类别:
    Standard Grant

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