A Dalton Minimum Repeat is Shaping Up


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Apropos my post yesterday on the sunspot cycle: A Dalton Minimum repeat is shaping up.

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  • Wrangler Wayne

    The year without a summer, during the Dalton Minimum, had a great helping hand from the eruption of Mount Tambora on April 10, 1815. The magnitude was 7 on the Volcanic Explosivity Index (VEI) scale. The following summer, world temperatures had dropped about 0.7-1.3 degrees F. Other volcanoes had previously erupted at a VEI-level 4 force in the Caribbean, Indonesia, Japan, and the Philippines. Volcanic eruptions do tend to increase during grand solar minimums like Dalton. The Landscheidt minimum now occurring may be deeper than the Dalton. The solar minimum now occurring with SC24 is the Landscheidt Minimum. Looking at the sunspot chart, it may be deeper than the Dalton. However, the volcanoes are fewer.

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