Grand solar minima and maxima Solar maximum

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grand solar maxima occur when several solar cycles exhibit greater average activity decades or centuries. solar cycles still occur during these grand solar maximum periods intensity of cycles greater. grand solar maxima have shown correlation global , regional climate changes.



400 year history of sunspot numbers.



the idea of modern maximum has been thrown question release of paper @ international astronomical union general assembly in august 2015.


a list of historical grand minima of solar activity includes grand minima ca. 690 ad, 360 bc, 770 bc, 1390 bc, 2860 bc, 3340 bc, 3500 bc, 3630 bc, 3940 bc, 4230 bc, 4330 bc, 5260 bc, 5460 bc, 5620 bc, 5710 bc, 5990 bc, 6220 bc, 6400 bc, 7040 bc, 7310 bc, 7520 bc, 8220 bc, 9170 bc.








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