Reduction and Analysis of the Mt. Wilson Observations of Solar Magnetic Plages 1915-1985

1915-1985年威尔逊山太阳磁斑观测的还原与分析

• 批准号: 9222592
• 负责人: Peter Foukal
• 金额: --
• 依托单位: Cambridge Research & Instrumentation Inc
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222592&HistoricalAwards=false
• 关键词: Reduction; Analysis; Mt.; Wilson; Observations

Improved understanding of the solar activity cycle and of its effects upon solar outputs requires, first and foremost, more information on its past behavior. This grant is for the completion of one aspect of the RISE (Radiative Inputs of the Sun to Earth) program, to digitize and reduce the CaK spectroheliograms obtained on a daily basis between 1915 and 1985 at Mt. Wilson. These images provide by far the longest record of solar chromospheric plages. We also plan to analyze the behavior of these structures in active regions and in the network over the past 7 solar cycles, for information on variations of solar UV, EUV and total irradiances. The behavior of facular area, spatial distribution, and brightness will also provide information on the sun's magnetic fields and activity levels that is complementary to data obtained by the sunspot index, and from other much shorter data bases such as magnetograms. The data from this grant will be made available to the scientific community. The results of this project should be of considerable interest to the upper atmospheric physicists, climatologists and in ongoing efforts to improve prediction and dynamical understanding of solar activity cycles.

提高对太阳活动周期及其对太阳输出的影响的理解，首先需要更多关于其过去行为的信息。这笔拨款是为了完成RISE（太阳对地球的辐射输入）计划的一个方面，即对1915年至1985年间每天在威尔逊山获得的CaK光谱日冕图进行数字化和简化。这些图像提供了迄今为止最长的太阳色层斑记录。我们还计划分析这些结构在过去7个太阳活动周期内活跃区域和网络中的行为，以获取太阳UV， EUV和总辐照度的变化信息。光斑面积、空间分布和亮度的行为也将提供太阳磁场和活动水平的信息，这是对太阳黑子指数和其他更短的数据库（如磁图）获得的数据的补充。这项拨款的数据将提供给科学界。这个项目的结果应该引起高层大气物理学家、气候学家和正在进行的改进太阳活动周期预测和动力学理解的努力的相当大的兴趣。