A Revised Collection of Sunspot Group Numbers

被引:135
作者
Vaquero, J. M. [1 ,2 ]
Svalgaard, L. [3 ]
Carrasco, V. M. S. [2 ,4 ]
Clette, F. [5 ]
LefSvre, L. [5 ]
Gallego, M. C. [2 ,4 ]
Arlt, R. [6 ]
Aparicio, A. J. P. [2 ,4 ]
Richard, J. -G. [7 ]
Howe, R. [8 ]
机构
[1] Univ Extremadura, Dept Fis, Merida 06800, Spain
[2] Univ Extremadura, Inst Univ Invest Agua Cambio Climat & Sostenibili, Badajoz 06006, Spain
[3] Stanford Univ, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA
[4] Univ Extremadura, Dept Fis, E-06071 Badajoz, Spain
[5] Royal Observ Belgium, World Data Ctr SILSO, 3 Ave Circulaire, B-1180 Brussels, Belgium
[6] Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany
[7] 6 Rue Guesnault, F-41100 Vendome, France
[8] AAVSO, Solar Sect, 49 Bay State Rd, Cambridge, MA 02138 USA
关键词
Sunspots; statistics; Solar cycle; observations; SOLAR-ACTIVITY; MAUNDER MINIMUM; CYCLE; RELIABILITY; ROTATION; LIMIT; LOST;
D O I
10.1007/s11207-016-0982-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We describe a revised collection of the number of sunspot groups from 1610 to the present. This new collection is based on the work of Hoyt and Schatten (Solar Phys. 179, 189, 1998). The main changes are the elimination of a considerable number of observations during the Maunder Minimum (hereafter, MM) and the inclusion of several long series of observations. Numerous minor changes are also described. Moreover, we have calculated the active-day percentage during the MM from this new collection as a reliable index of the solar activity. Thus, the level of solar activity obtained in this work is greater than the level obtained using the original Hoyt and Schatten data, although it remains compatible with a grand minimum of solar activity. The new collection is available in digital format.
引用
收藏
页码:3061 / 3074
页数:14
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