RUI: Observations and Modeling of Solar Total and Spectral Variability

RUI：太阳总量和光谱变化的观测和建模

• 批准号: 0848518
• 负责人: Gary Chapman
• 金额: $ 25.88万
• 依托单位: The University Corporation, Northridge
• 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: 2009-07-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0848518&HistoricalAwards=false
• 关键词: RUI; Observations; Modeling; Solar; Total

CSUN (California State University-Northridge) operates the San Fernando Observatory (SFO), which has produced an extensive data set of photometric full-disk solar images covering more than twenty-two years. These images allow precise measurement of the relative brightness of a variety of solar features, such as sunspots and faculae. The Principal Investigator (PI) will utilize this SFO data, as well as photometric images from other sources, to address open scientific questions about solar variability. The PI plans to investigate many issues, including whether observed solar magnetic features are sufficient to explain short and long term variations in total and spectral solar irradiance, and what the relative contributions of various solar features might be to changes in those irradiances. The research will analyze the statistical properties of solar active regions, to discover whether these vary over a solar cycle, or from one cycle to the next. It expects to determine whether the solar irradiance changes in a systematic way at solar minimum, and whether measurements of solar features can be used to reconstruct current and historical values of total solar irradiance (TSI) and spectral solar irradiance (SSI). The PI pledges that these photometric images, precision information on solar active regions, and secondary data (such as total and spectral solar irradiance models) will be made available to the wider research community. This research will also improve our understanding of solar variability and any effect it might have on the Earth's climate and weather, and therefore have broad impact on society. The PI also emphasizes that CSUN serves a significant minority population, and that this project will thus increase the participation of under-represented groups in science. Finally, the PI will give public talks in the CSUN planetarium about his research results, in order to inform and educate a wider audience.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

CSUN（加利福尼亚州立大学 - 荷里奇）经营San Fernando天文台（SFO），该天文台（SFO）生产了广泛的数据集，其中包括22年以上的光度全盘太阳能图像。这些图像允许精确测量各种太阳能特征的相对亮度，例如黑子和faculae。首席研究员（PI）将利用此SFO数据以及其他来源的光度图像来解决有关太阳可变性的开放科学问题。 PI计划研究许多问题，包括观察到的太阳磁特征是否足以解释总太阳辐照度和光谱太阳辐照度的短期和长期变化，以及各种太阳能特征的相对贡献可能是对这些辐照的变化的什么。该研究将分析太阳活动区域的统计特性，以发现在太阳周期中或从一个周期到另一个周期之间的统计特性。它预计将确定太阳辐照度是否以太阳能最小值的系统方式变化，以及太阳能特征的测量是否可用于重建总太阳辐照度（TSI）（TSI）和光谱太阳辐照度（SSI）的当前和历史值。 PI承诺将向更广泛的研究社区提供这些光度图像，太阳能区域的精确信息以及辅助数据（例如总和太阳辐照模型）。这项研究还将提高我们对太阳可变性的理解及其对地球气候和天气的任何影响，从而对社会产生广泛的影响。 PI还强调，CSUN为少数族裔人口提供服务，因此该项目将增加代表性不足的群体参与科学的参与。最后，PI将在CSUN天文馆就其研究结果进行公开谈判，以告知和教育更广泛的受众群体。该奖项是根据2009年的《美国复苏和再投资法》（Prift Law Law）（公法111-5）资助的。