Abstract
By about 2030-2040, the Sun will experience a new grand solar minimum. This is evident from multiple studies of quite different characteristics: the phasing of sunspot cycles, the cyclic observations of North Atlantic behaviour over the past millennium, the cyclic pattern of cosmogenic radionuclides in natural terrestrial archives, the motions of the Sun with respect to the centre of mass, the planetary spin-orbit coupling, the planetary conjunction history and the general planetary-solar-terrestrial interaction. During the previous grand solar minima—i.e. the Sporer Minimum (ca 1440-1460), the Maunder Minimum (ca 1687-1703) and the Dalton Minimum (ca 1809-1821)—the climatic conditions deteriorated into Little Ice Age periods.
Highlights
The solar activity exhibits a fairly regular alternation between solar maxima and solar minima (e.g. [1] [2])
The grand solar minima known as the Spörer Minimum, the Maunder Minimum and the Dalton Minimum are all well known, not least because they correspond quite well with cold periods known as “Little Ice Ages” [3]-[5]
In the period 1997-2003, I chaired an INTAS project on Geomagnetism & Climate; we concluded that we, in the middle of the 21st century, had to be back in a new solar minimum with Little Ice Age climatic conditions [6] [7]
Summary
The solar activity exhibits a fairly regular alternation between solar maxima and solar minima (e.g. [1] [2]). (2015) The Approaching New Grand Solar Minimum and Little Ice Age Climate Conditions. The conclusions [21] were quite straightforward: Obviously we are on our way into a new grand solar minimum This sheds serious doubts on the issue of a continued, even accelerated, warming as proposed by the IPCC project. This quite innocent—and very true—conclusion [21] made the publisher take the quite remarkable step to close down the entire scientific journal [32]. I will review some of the leading facts for the proposition of an approaching Grand Solar Minimum and a related climatic deterioration of Little Ice Age type, in analogy with what happened during the last three solar minima, viz. I will review some of the leading facts for the proposition of an approaching Grand Solar Minimum and a related climatic deterioration of Little Ice Age type, in analogy with what happened during the last three solar minima, viz. the Dalton, Maunder and Spörer Minima
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