VizieR Online Data Catalog: 1000-year sunspot series (Usoskin+, 2021)
Abstract
A new quantitative reconstruction of annually resolved solar activity, in the form of SNs (at least outside grand minima) with a full uncertainty assessment, is presented for the period 971-1900. For the first time, individual solar cycles are presented for the whole of the last millennium, more than doubling the existing statistics of solar cycles.
Three tabular files are presented. File 'osf.dat' contains annual reconstructions of the opens solar flux (OSF) [Fo] along with its 1-sigma uncertainties [sF] and the smoothed (22-yr SSA -- see text) values [<Fo>]. This table corresponds to Figure 8 in the text. File 'osn.dat' contains annual reconstructions of the sunspot number (SN) [SN] along with its 1-sigma uncertainties [sSN] and the smoothed (22-yr SSA -- see text) values [<SN>]. This table corresponds to Figure 11 in the text. File 'table1.dat' presents a textual tabular version of Table 1 in the text and contains the internal cycle number [n], years of minimum [Ymin] and maximum [Ymax] of each cycle, cycle-averaged sunspot number [<SN>], its 1-sigma uncertainty [sS], cycle length (min-to-min) [T], and quality flag [q]. (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- March 2021
- DOI:
- 10.26093/cds/vizier.36490141
- Bibcode:
- 2021yCat..36490141U
- Keywords:
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- Sun