Reconstruction of the Sunspot Group Number: The Backbone Method
Reconstruction of the Sunspot Group Number: The Backbone Method
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DOI：
10.1007/s11207-015-0815-8
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发表时间：
2015-06
期刊：
影响因子：
2.8
通讯作者：
L. Svalgaard;K. Schatten
中科院分区：
文献类型：
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作者：
L. Svalgaard;K. Schatten
我们重建了太阳黑子群的数量，但不是通过与其他重建的数据进行比较，也不是通过修正那些被认为有缺陷的数据，而是通过重新评估原始数据。由此产生的系列是一个纯粹的太阳指数，不依赖于其他代理的输入，例如放射性核素，极光观测或地磁记录。我们所选择的方法是对数据集进行“骨架化”，通过使用长时间观察者作为刚度特性来提供实质内容和刚度。太阳活动，如组数所定义的，似乎在1700年以来的过去三个世纪中的每一个时间间隔内达到并维持相同的水平，而过去几十年似乎并没有异常活跃，这与人们经常声称的相反。
We have reconstructed the sunspot-group count, not by comparisons with other reconstructions and correcting those where they were deemed to be deficient, but by a re-assessment of original sources. The resulting series is a pure solar index and does not rely on input from other proxies,e.g.radionuclides, auroral sightings, or geomagnetic records. “Backboning” the data sets, our chosen method, provides substance and rigidity by using long-time observers as a stiffness character. Solar activity, as defined by the Group Number, appears to reach and sustain for extended intervals of time the same level in each of the last three centuries since 1700 and the past several decades do not seem to have been exceptionally active, contrary to what is often claimed.