NSWP: Synoptic Solar Magnetic Field Measurements at the Mt. Wilson 150-foot Tower Telescope in Support of Heliospheric Predictions and Modeling

NSWP:威尔逊山 150 英尺塔式望远镜的天气太阳磁场测量,支持日光层预测和建模

基本信息

  • 批准号:
    0517729
  • 负责人:
  • 金额:
    $ 36.83万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2005
  • 资助国家:
    美国
  • 起止时间:
    2005-09-01 至 2008-08-31
  • 项目状态:
    已结题

项目摘要

The solar surface magnetic field is the anchor point for the structure of the heliospheric magnetic field. This proposed effort will improve the PI's ability to predict the state of the near-earth heliospheric environment through a continuation and enhancement of the synoptic program of observations at the 150-foot solar tower on Mt. Wilson. Each clear day, the Mt. Wilson Observatory (MWO) program contributes up to twenty full disk magnetograms, and its daily measurements of the photospheric field are used operationally by the Space Environment Center of NOAA (National Oceanic and Atmospheric Administration) to predict the state of the near-earth heliosphere. The MWO provides a unique combination of good spatial resolution with a well-calibrated magnetic field zero point and a temporal coverage extending back to 1967. This proposal will enable the continuation of this project and the distribution of new data products to the community through a user-initiated, web-based retrieval process.The proposer plans to investigate the commonly used potential theory model as the method of representing the magnetic field between the Sun and solar wind, and to investigate the possibility of estimating electric currents from line-of-sight magnetograms. He plans to use a method he developed for measuring the field's transverse component, after he compared observed transverse fields with fields derived from the potential field theory and found substantial disagreements. He discovered that if a different spectral line pair near the core of the sodium D line is used to make the basic magnetic field measurement, the problems with the potential field theory are reduced. This spectral line pair is formed at the base of the chromosphere instead of in the middle of the photosphere. The PI will investigate the advantages of using this new line pair on a regular basis as an augmentation of MWO's regular data products. The combination of two or more spectral sampling pairs for the basic magnetic field measurement permits an estimation of vertical gradients in the field strength. By using his estimation of the transverse field components at different altitudes, the PI will estimate the component of the curl of the magnetic field in the north-south direction. This in turn will provide an estimate of photospheric electric currents, which have been found to be a predictor of coronal instability. The PI will investigate the locations of enhanced magnetic curl to learn about the magnetic configurations that lead to these currents.
太阳表面磁场是日球磁场结构的锚点。这一拟议的努力将提高PI的能力,预测近地日光层环境的状态,通过继续和加强在山150英尺的太阳塔观测天气方案。威尔逊每一个晴朗的日子,山。威尔逊天文台(MWO)计划提供了多达20个完整的磁盘磁图,其对光球场的日常测量被NOAA(国家海洋和大气管理局)的空间环境中心用于预测近地日光层的状态。MWO提供了良好的空间分辨率与校准良好的磁场零点和时间覆盖范围延伸到1967年的独特组合。这一提议将使这一项目得以继续,并通过用户发起的网络检索进程向社区分发新的数据产品,提议者计划研究常用的势理论模型,作为表示太阳和太阳风之间磁场的方法,并研究根据视线磁图估计电流的可能性。他计划使用他开发的一种方法来测量场的横向分量,在他将观察到的横向场与从势场理论导出的场进行比较并发现实质性的分歧之后。他发现,如果使用钠D线核心附近的不同光谱线对来进行基本磁场测量,那么势场理论的问题就会减少。这对光谱线形成于色球层的底部,而不是光球层的中部。PI将研究定期使用这种新的线对作为MWO常规数据产品的增强的优点。用于基本磁场测量的两个或多个频谱采样对的组合允许估计场强中的垂直梯度。通过使用他对不同高度处的横向场分量的估计,PI将估计磁场在南北方向上的旋度分量。这反过来将提供一个估计的光球电流,这已被发现是一个预测日冕不稳定。PI将调查增强磁旋的位置,以了解导致这些电流的磁配置。

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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Roger Ulrich其他文献

Fighting and Escape Reaction in Paired Rats
  • DOI:
    10.1007/bf03393990
  • 发表时间:
    2017-06-08
  • 期刊:
  • 影响因子:
    0.800
  • 作者:
    Marshall Wolfe;Roger Ulrich;Sylvia Dulaney
  • 通讯作者:
    Sylvia Dulaney
Behavior Control and Public Concern
  • DOI:
    10.1007/bf03393708
  • 发表时间:
    2017-05-29
  • 期刊:
  • 影响因子:
    0.800
  • 作者:
    Roger Ulrich
  • 通讯作者:
    Roger Ulrich
Don F. Hake
  • DOI:
    10.1007/bf03391868
  • 发表时间:
    2017-06-01
  • 期刊:
  • 影响因子:
    3.800
  • 作者:
    Richard M. Foxx;Roger Ulrich;Nate Azrin;Ron Hutchinson;Bob Campbell;Jay Powell;James M. Johnston
  • 通讯作者:
    James M. Johnston

Roger Ulrich的其他文献

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{{ truncateString('Roger Ulrich', 18)}}的其他基金

Calibration and Analysis of Mount Wilson Magnetograms and Dopplergrams for the Years 1967 to 2013
1967年至2013年威尔逊山磁图和多普勒图的校准和分析
  • 批准号:
    2000994
  • 财政年份:
    2020
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Standard Grant
SHINE: Synoptic Observations in Support of Solar and Heliospheric Modelling
SHINE:支持太阳和日光层建模的天气观测
  • 批准号:
    0958779
  • 财政年份:
    2010
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Mt. Wilson Solar Photographic Archive Digitization Project
威尔逊山太阳能摄影档案数字化项目
  • 批准号:
    0236682
  • 财政年份:
    2003
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Synoptic Studies of Solar Magnetism and Dynamics Using the 150-foot Solar Tower on Mt. Wilson
利用威尔逊山 150 英尺高的太阳塔对太阳磁力和动力学进行综合研究
  • 批准号:
    0101350
  • 财政年份:
    2001
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Synoptic Solar Velocity and Magnetic Field Observations Using the 150-Foot Solar Tower on Mount Wilson Observatory
使用威尔逊山天文台 150 英尺太阳塔进行天气太阳速度和磁场观测
  • 批准号:
    9731631
  • 财政年份:
    1998
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Synoptic Solar Velocity and Magnetic Field Observations Using the 150-foot Solar Tower on Mount Wilson
使用威尔逊山 150 英尺高的太阳塔进行天气太阳速度和磁场观测
  • 批准号:
    9315098
  • 财政年份:
    1994
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
GONG '94 Conference: Helio-and Astero-Seismology from Earth and Space. May 16 to 20, 1994, Davidson Conference Center, University of Southern California
GONG 94 会议:来自地球和太空的日光和星体地震学。
  • 批准号:
    9407747
  • 财政年份:
    1994
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Standard Grant
Synoptic Studies of Solar Velocity and Magnetic Fields Using the 150-foot Solar Tower on Mt. Wilson
使用威尔逊山 150 英尺高的太阳塔进行太阳速度和磁场的天气研究
  • 批准号:
    9015108
  • 财政年份:
    1991
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Synoptic Solar Velocity and Magnetic Field Observations Using the 150-Foot Solar Tower on Mount Wilson
使用威尔逊山 150 英尺的太阳塔进行天气太阳速度和磁场观测
  • 批准号:
    8813491
  • 财政年份:
    1988
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Solar Magnetic and Velocity Measurements
太阳磁力和速度测量
  • 批准号:
    8602410
  • 财政年份:
    1986
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant

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Development of a Polarimeter System for Solar Synoptic High-Sensitivity Observations
太阳天气高灵敏度观测旋光仪系统的研制
  • 批准号:
    2119740
  • 财政年份:
    2021
  • 资助金额:
    $ 36.83万
  • 项目类别:
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Long-Term Solar Variability Studies with a Unique Solar Synoptic Archive
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  • 批准号:
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Study of the Solar Dynamo Action based on the Synoptic, Multi-Aspect Monitoring of the Solar Activity
基于太阳活动天气多方面监测的太阳发电机作用研究
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SHINE: Synoptic Observations in Support of Solar and Heliospheric Modelling
SHINE:支持太阳和日光层建模的天气观测
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MRI:开发用于光球层和色球层的 Mees 分光偏振计,用于太阳大气 3-D 磁场结构的天气观测
  • 批准号:
    0923560
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    2009
  • 资助金额:
    $ 36.83万
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    Standard Grant
Synoptic Studies of Solar Magnetism and Dynamics Using the 150-foot Solar Tower on Mt. Wilson
利用威尔逊山 150 英尺高的太阳塔对太阳磁力和动力学进行综合研究
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Synoptic Solar Velocity and Magnetic Field Observations Using the 150-Foot Solar Tower on Mount Wilson Observatory
使用威尔逊山天文台 150 英尺太阳塔进行天气太阳速度和磁场观测
  • 批准号:
    9731631
  • 财政年份:
    1998
  • 资助金额:
    $ 36.83万
  • 项目类别:
    Continuing Grant
Synoptic Solar Velocity and Magnetic Field Observations Using the 150-foot Solar Tower on Mount Wilson
使用威尔逊山 150 英尺高的太阳塔进行天气太阳速度和磁场观测
  • 批准号:
    9315098
  • 财政年份:
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    $ 36.83万
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Synoptic Studies of Solar Velocity and Magnetic Fields Using the 150-foot Solar Tower on Mt. Wilson
使用威尔逊山 150 英尺高的太阳塔进行太阳速度和磁场的天气研究
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