File:Sunspots-reconstructed-0-2015-en.svg

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Summary

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Description
English: 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), Table CDS, sn.dat accessed June 3rd, 2016
  • orange line,
    • yr. 1610-2015: Yearly mean group number (v.2) from the backbone observer method (Svalgaard & Schatten 2016), source: WDC-SILSO, Royal Observatory of Belgium, Brussels, accessed June 3rd, 2016
    • yr. 2016-2020: Predicted Sunspot_Numbers, Created: 2016 May 09 0400 UTC, Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center (SWPC), accessed June 3rd, 2016
This is basically a reproduction of Fig. 2 in Usoskin et al. (2014), but with v2 group numbers and the decade 2010-2020 added.
Deutsch: Gruppen-Sonnenfleckenzahl, Durchschnitt pro Jahrzehnt, vom Jahr 0 bis 2015
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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.


Created with Gnuplot 4.4 using the following script: 

set terminal svg enhanced size 1000 400 fname "Liberation Sans" fsize 12
set output "sunspots-reconstructed-0-2015-en.svg"
set title "Group sunspot number 0–2015" font "Liberation Sans, 24"
set datafile missing '"#N/A"'
set obj 1 rectangle behind from screen 0,0 to screen 1,1
set obj 1 fillstyle solid 1.0 fillcolor rgbcolor "white"

set key top left Left reverse
set key nobox
set yrange [0:100]
set ytics out nomirror ("10" 10, "" 20, "30" 30, "" 40, "50" 50, "" 60, "70" 70, "" 80, "90" 90)
set xrange [0:2015]
set xtics out nomirror 0,200,2000
set mxtics 4
set grid xtics ytics mxtics mytics lt 0 lw 0.5 lc rgb "grey95"
set xlabel 'Year'
set ylabel 'Sunspots (decadal average)'
set style data lines
plot 'sn-usoskin2014-reconstruct.dat' using 1:3:4 w filledcurves lt rgbcolor "#F6DFB6" notitle, \
     'sunspots-groupnumber-1615-2015-dec-avg.csv' using 1:5 lt rgbcolor "orange" lw 3 title "Group sunspot no. V2.0 (–2015: SILSO data, 2016–2020: NOAA SWPC)", \
     'sn-usoskin2014-reconstruct.dat' using 1:2 lt rgbcolor "red" lw 3 title "^{14}C reconstruction (Usoskin et al., 2014)"

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I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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current09:54, 18 March 2017Thumbnail for version as of 09:54, 18 March 20171,000 × 400 (61 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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