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arXiv 0906.0942astro-ph.SR
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一个涵盖130多年的太阳黑子面积同质数据库

A homogeneous database of sunspot areas covering more than 130 years

L. Balmaceda, S. K. Solanki, N. Krivova, S. Foster

摘要:

太阳黑子面积的历史记录是太阳活动和变化的一个有价值和广泛使用的代理。皇家格林威治天文台(RGO)在1874年至1976年期间定期测量这一参数和其他参数。在此之后,来自许多不同天文台的记录是可用的。然而,这些都显示出系统性的差异,往往有重大的差距。我们的目标是通过组合不同的数据集来获得统一和完整的太阳黑子面积时间序列。太阳黑子面积的合成图对于太阳物理学中的不同应用至关重要,其中包括辐照度重建。在不同的观测站同时记录的数据进行统计比较,以确定相互校准因子。使用这些数据,我们编译一个完整的和交叉校准的时间序列。格林威治数据集在1976年之前一直用作基础,1977年至1985年期间使用俄罗斯数据(前苏联各站观测数据汇编),自1986年以来使用美国空军网络汇编的数据。其他数据集(罗马、云南、卡塔尼亚)被用来填补剩余的空白。使用最终的太阳黑子面积记录,计算光度太阳黑子指数。我们还表明,使用未经校准的太阳黑子面积数据集,可以严重影响辐照度变化的估计。我们的分析意味着,紫外线辐照度变化对气候的影响比太阳总辐照度变化小得多的说法是没有根据的。

英文摘要:

The historical record of sunspot areas is a valuable and widely used proxy of solar activity and variability. The Royal Greenwich Observatory (RGO) regularly measured this and other parameters between 1874 and 1976. After that time records from a number of different observatories are available. These, however, show systematic differences and often have significants gaps. Our goal is to obtain a uniform and complete sunspot area time series by combining different data sets. A homogeneus composite of sunspot areas is essential for different applications in solar physics, among others for irradiance reconstructions. Data recorded simultaneously at different observatories are statistically compared in order to determine the intercalibration factors. Using these data we compile a complete and cross-calibrated time series. The Greenwich data set is used as a basis until 1976, the Russian data (a compilation of observations made at stations in the former USSR) between 1977 and 1985 and data compiled by the USAF network since 1986. Other data sets (Rome, Yunnan, Catania) are used to fill up the remaining gaps. Using the final sunspot areas record the Photometric Sunspot Index is calculated. We also show that the use of uncalibrated sunspot areas data sets can seriously affect the estimate of irradiance variations. Our analysis implies that there is no basis for the claim that UV irradiance variations have a much smaller influence on climate than total solar irradiance variations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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