File:Sunspots-reconstructed-0-2015-en-mca.svg
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| Description |
English: Group sunspot number, decadal average from year 0 until 2015.
Deutsch: Gruppen-Sonnenfleckenzahl, Durchschnitt pro Jahrzehnt, vom Jahr 0 bis 2015 |
| Date | |
| Source | Own work |
| Author | DeWikiMan |
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Literature and Sources:
- G. Usoskin et al.: Evidence for distinct modes of solar activity. In: Astronomy & Astrophysics, 2014. DOI:10.1051/0004-6361/201423391
- Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series of ISSI - The Solar Activity Cycle. 2015. DOI:10.1007/978-1-4939-2584-1_3 (For details on the new group v2 number)
- NOAA Space Weather Prediction Center: Predicted Sunspot Number and Radioflux. May 9th, 2016. Accessed June 3rd, 2016.
- WDC-SILSO, Royal Observatory of Belgium, Brussels: group number | In: SILSO: Sunspot Index and Long-term Solar Observations. (Version 2.0 (Alternate series), Svalgaard & Schatten 2015: "backbone" yearly mean group number). Accessed June 3rd, 2016.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 09:42, 18 March 2017 | | 1,000 × 400 (88 KB) | DeWikiMan (talk | contribs) | {{Information |Description ={{en|1=Group sunspot number, decadal average from year 0 until 2015. * red line, yr. 0-1945: values based on a 14C reconstruction, see Usoskin et al. (2014), [http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/562/L10 Table C... |
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