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A rapid-fire lecture on solar-planetary links, sunspots, volcanoes, ice cores, climate and a whole lot more, including a closer look at the Spörer Minimum.
Dr. Willie Soon; The “Global Blue Sun” Solar Anomaly during the 1450s and 1460s
Posted: September 20, 2018 by oldbrew in Astronomy, climate, cosmic rays, Natural Variation, Solar physics, solar system dynamics, volcanosTags: barycentre, solar - planetary theory, sunspots
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Tallbloke's Talkshop 
RELEASE OF NEW CLIMATEGATE EMAILS IMMINENT
Date: 20/09/18 Watts Up With That?
Included in the release will be emails that provide the full context of the discussions between Michael Mann and colleagues and Chick Keller on whether there was a medieval warm period and a little ice age. Mann, Bradley and Hughes (MBH) were the authors of the “hockey stick” graph that became the icon of climate alarmism.
https://www.thegwpf.com/release-of-new-climategate-emails-imminent/
Research: A phenomenological study of the timing of solar activity minima of the
last millennium through a physical modeling of the Sun–Planets Interaction (2014)
Rodolfo Gustavo Cionco, Willie Soon
From the Conclusions section:
Our basic result is that the big pulses in PE are not only confined
to epochs of great planetary alignments (i.e., at around 1632 AD;
1811 AD, 1990 AD), but also to all close approaches to the barycenter.
We find that the time duration, represented by the dynamic
parameter, C, in which the Sun spends at shorter barycentric distances
within these pulses, seems to be a key parameter to select
which PE pulses will produce a GM event. This proposal implies
that the well-mixed radiative location is the key zone of this process,
because PE minima are directly related to PEv ð0:16RsÞ. On
the other hand, this finding, in turn, suggests the GM events are
not necessarily nor strictly periodic, it depends on the particular
giant planets positions and configurations and the corresponding
close approaches to the barycenter; although certain quasi-regular
oscillations can be identified because the basic SPI physical mechanism
is ultimately traced back to the solar system orbital dynamics.
Click to access CioncoSoon15-NA-final.pdf
At 1453, 1632, 1811 and 1990 the Sun travels through the barycentre of the solar system.
The dates are ~179 years apart i.e. the Jose cycle.
The strong decrease in the speed of the solar wind and wave of jet stream over Europe.
Positions of the giant planets and Earth relative to that of the Sun (white circle passing through the solar system barycentre) in 1453.
– – –
The Kuwae (Vanuatu) eruption of AD 1452: potential magnitude and volatile release
Comparing the volatile release of the Kuwae eruption with other large-magnitude eruptions, places Kuwae as the greatest sulfuric acid aerosol producer in the last seven centuries, larger even than sulfur emissions from the eruption of Tambora (Indonesia) in 1815, and possibly Laki (Iceland) in 1783. The severe and unusual climatic effects reported in the mid- to late-1450s were likely caused by the Kuwae eruption.
http://oro.open.ac.uk/5106/
Dr Soon refers to this eruption in his talk. Tambora occurred in 1815, only 4 years after a similar Sun-planets configuration (May 1811). ‘In 1812, Mount Tambora became highly active’ – Wikipedia.
Pinatubo erupted in 1991 about 1 year after the Sun was at the solar system barycentre (April 1990).
Pinatubo is most notorious for its Volcanic Explosivity Index (VEI) 6 eruption on June 15, 1991, the second-largest terrestrial eruption of the 20th century
https://en.wikipedia.org/wiki/Mount_Pinatubo
oldbrew: question: how can one find out the the planetary positions at about the peaks and troughs of the Eddy cycle?
Re volcanic eruptions, some I checked seem to occur when leading up to or past an inflection point in the Eddy cycle. Seem like secondary geological events.
[reply] use SolarSimulator2: http://arnholm.org/astro/sun/sc24/sim2/index.html
Thank you for the link. (and there goes my gardening!).
Really enjoyed the ‘Blue sun’ video. Some more links to follow. Exceptional comment at end, quote: “in science you have to change your mind when evidence is not telling you so — “. A bitter pill.
The 1452 or 1453 A.D. Kuwae Eruption Signal
Derived from Multiple Ice Core Records:
Greatest Volcanic Sulfate Event of the Past 700 Years
Submitted to Journal of Geophysical Research
September, 2005
…our result suggests that the Kuwae eruption was the largest stratospheric sulfate event of that period, probably surpassing the total sulfate deposition of the Tambora eruption of 1815.
Click to access Kuwae27.pdf
SolarSimulator2; Any way I can move it back into the bce eras. Stops at zero CE.
oldmanK – no, it only does 0-2999