Reconstruction of a Monthly Homogeneous Sunspot Area Series Since 1832 |
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| Authors: | Vaquero JM Gallego MC Sánchez-Bajo F |
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| Institution: | (1) Departamento de Física, Escuela Politécnica, Universidad de Extremadura, Avda de la Universidad s/n, 10071 Cáceres, Spain;(2) Departamento de Física, Facultad de Ciencias, Universidad de Extremadura, Avda de Elvas s/n, 06071 Badajoz, Spain;(3) Departamento de Electrónica e Ingeniería Electromecánica, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda de Elvas s/n, 06071 Badajoz, Spain |
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| Abstract: | In this work, a procedure to elaborate a homogeneous sunspot area series using the Royal Greenwich Observatory/USAF/NOAA data
(from 1874 to the present) and the De la Rue and co-workers data (from 1832 to 1868) is presented. These two data series correspond
to time intervals that do not overlap and a direct comparison between them could not be carried out. We used the International
Sunspot Number (Ri) and the Group Sunspot Number (RG) as a link between the two original series. Thus, two homogeneous sunspot area series have been built using a simple mathematic
procedure based on linear relations. |
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