The Sun is the fundamental energy sources of the Earth's climate

As reported by The Hockey Schtick: (Link)

New paper finds solar activity has a strong influence on Arctic winter severity

A paper published today in the Journal of Atmospheric and Solar-Terrestrial Physics finds the ice winter severity index over the past 600 years in the Baltic Sea [located a few degrees south of the Arctic circle] is "strongly modulated" by solar activity over periods as short as one decade. The authors also found that the 180 year cycle of the Barycenter modulates solar activity and the ice winter severity index.

The Paper:
Solar Forcing on the ice winter severity index in the western Baltic Region
M.C.Leal-Silv; V.M. Velasco Herrera  Journal of Atmospheric and Solar-Terrestial Physics


The Sun is the fundamental energy sources of the Earth's climate and therefore its variations can contribute to natural climate variations. In the present work we study the variability of ice winter severity index in the Baltic Sea since the 15th century and its possible connection with solar activity, based in a new method for finding and measuring amplitude-phase cross-frequency coupling in time series with a low signal/noise ratio, we suggests that the ice winter severity index in the Baltic Sea is modulated by solar activity and solar motion in several frequency bands during the last 500 yrs. According to our model a strong coupling between the decadal periodicity in the ice winter severity index time series and the secular periodicity of solar activity is present. We found that the ice winter severity index is strongly modulated by solar activity at the decadal periodicity. We also found that the 180 year periodicity of the Barycentre motion modulates the amplitudes of the decadal periodicity of solar activity and the Ice winter severity index. This method represents a useful tool for study the solar-terrestrial relationships.

The Grand Minimum:(link)
I found this paper’s abstract most interesting and decided to do a little research on the Barycenter and were we are today in the cycle and where it was during the Maunder Minimum.

I found this on the Terra Cycles web site:  Solar Barycenter Update June 17, 2010 (See Image)
As of June 17, 2010, the solar barycenter remains near the solar surface.  The solar barycenter is the center of gravity for all the planets and the Sun.  The barycenter interacts directly with the Sun’s core.  The core of the Sun is dense and thus moves somewhat independent of the upper layers.  Usually, the solar barycenter causes the core to jiggle within the Sun, which causes familiar solar activity seen in the 1900s.
At this time, the solar barycenter is transiting the Sun’s surface in a tighter formation than it has in over 6000 years; even more so than prior to the Maunder Minimum in the 1600s.  This is a significant solar event. [My emphasis]


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