Approaching Solar Minimum … by Alice ..

Dear Ones,

Here’s a good chart of the solar progression. According to the average, we’re about 2 and a half years from solar minimum, based on the duration of recent solar cycles from WDC-SILSO, Royal Observatory of Belgium, Brussels:

Image:  http://solen.info/solar/images/comparison_recent_cycles.png ..

Solar Cycle 1 began in 1755. We’re currently in Solar Cycle 24, which began in January of 2008. While the mean duration of a solar cycle during all those years was 11.1 years, cycles vary quite a bit … from 9.0 years (Solar Cycle 2) to 13.7 years (Solar Cycle 4). Thus it is theoretically possible (although unlikely) that we might now be approximately at solar minimum.

Below, in green font, is detailed information on Solar Cycles 1 through where we are now in Solar Cycle 24:

Cycle Started Finished Duration (years) Maximum (monthly SSN (Smoothed Sunspot Number))[3] Minimum (monthly SSN; end of cycle)[4][5] Spotless days (end of cycle)[6][7][8]
Solar cycle 1 1755 August 1766 March 11.3 86.5 (June 1761) 11.2  
Solar cycle 2 1766 March 1775 August 9.0 115.8 (Sep 1769) 7.2  
Solar cycle 3 1775 August 1784 June 9.3 158.5 (May 1778) 9.5  
Solar cycle 4 1784 June 1798 June 13.7 141.2 (Feb 1788) 3.2  
Solar cycle 5 1798 June 1810 September 12.6 49.2 (Feb 1805) 0.0  
Solar cycle 6 1810 September 1823 December 12.4 48.7 (May 1816) 0.1  
Solar cycle 7 1823 December 1833 October 10.5 71.5 (Nov 1829) 7.3  
Solar cycle 8 1833 October 1843 September 9.8 146.9 (Mar 1837) 10.6  
Solar cycle 9 1843 September 1855 March 12.4 131.9 (Feb 1848) 3.2 ~655
Solar cycle 10 1855 March 1867 February 11.3 98.0 (Feb 1860) 5.2 ~406
Solar cycle 11 1867 February 1878 September 11.8 140.3 (Aug 1870) 2.2 ~1028
Solar cycle 12 1878 September 1890 June 11.3 74.6 (Dec 1883) 5.0 ~736
Solar cycle 13 1890 June 1902 September 11.9 87.9 (Jan 1894) 2.7 ~934
Solar cycle 14 1902 September 1913 December 11.5 64.2 (Feb 1906) 1.5 ~1023
Solar cycle 15 1913 December 1923 May 10.0 105.4 (Aug 1917) 5.6 534
Solar cycle 16 1923 May 1933 September 10.1 78.1 (Apr 1928) 3.5 568
Solar cycle 17 1933 September 1944 January 10.4 119.2 (Apr 1937) 7.7 269
Solar cycle 18 1944 January 1954 February 10.2 151.8 (May 1947) 3.4 446
Solar cycle 19 1954 February 1964 October 10.5 201.3 (Mar 1958) 9.6 227
Solar cycle 20 1964 October 1976 May 11.7 110.6 (Nov 1968) 12.2 272
Solar cycle 21 1976 May 1986 March 10.3 164.5 (Dec 1979) 12.3 273
Solar cycle 22 1986 March 1996 June 9.7 158.5 (Jul 1989) 8.0 309
Solar cycle 23 1996 June 2008 January 11.7 120.8 (Mar 2000) 1.7 817
Solar cycle 24 2008 January[9] Still ongoing   81.9 (Apr 2014)    
Mean     11.1 114.1 5.8   

–The above table in green font is from “List of Solar Cycles,” in Wikipedia, http://solen.info/solar/images/comparison_recent_cycles.png … Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply.

In love, light and joy,
I Am of the Stars

…………………..

Creative Commons License
Except where otherwise noted, this work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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solar cycles, solar minimum, astrogeophysics, solar events, solar progression,

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