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Evolution of the Sunspot Number and Solar Wind B Time Series

機器翻譯太陽黑子數和太陽風B時間序列的演變

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【摘要】The past two decades have witnessed significant changes in our knowledge of long-term solar and solar wind activity. The sunspot number time series (1700-present) de-veloped by Rudolf Wolf during the second half of the 19th century was revised and ex-tended by the group sunspot number series (1610-1995) of Hoyt and Schatten during the 1990s. The group sunspot number is significantly lower than the Wolf series before ~1885. An effort from 2011-2015 to understand and remove differences between these two series via a series of workshops had the unintended consequence of prompting several alternative constructions of the sunspot number. Thus it has been necessary to expand and extend the sunspot number reconciliation process. On the solar wind side, after a decade of controversy, an ISSI International Team used geomagnetic and sunspot data to obtain a high-confidence time series of the solar wind magnetic field strength (B) from 1750-present that can be compared with two independent long-term (> ~600 year) series of annual B-values based on cosmogenic nuclides. In this paper, we trace the twists and turns leading to our current understanding of long-term solar and solar wind activity.

【作者】Edward W. Cliver; Konstantin Herbst;

【作者單位】National Solar Observatory, Boulder, CO, USA; Christian-Albrechts-Universitaet zu Kiel, Kiel, Germany;

【年(卷),期】2019,,

【頁碼】81-111

【總頁數】31

【正文語種】eng

【中圖分類】P145.3;

【關鍵詞】Sunspot number; solar wind magnetic field strength;


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