On Tuesday, 16 February 2016 22:58:27 UTC, Martin Brown wrote:
On 16/02/2016 21:21, JCW wrote:
Had a quick read of this, understood very little of it, but of course caught the last few lines which read:

"The first of these oscillations may even turn out to be as strongly negative as around 1810,
in which case a short Grand Minimum similar to the Dalton one might
develop.
This moderate-to-low-activity episode is expected to last for at
least one Gleissberg cycle (60-100 years)."

Note the use of the word "may". On the face of it this recent cycle 24
is quiet for what should have been a solar maximum but it is more like
those of 1928, 1908 or 1884. Here is the Zurich sunspot number graph:

http://solarscience.msfc.nasa.gov/im...olor_Small.jpg

OTOH the last five cycles three have been strong by historical standards
(and a part of that has been traced to a calibration error due to a
change in counting methods).

The remaining extract he

http://www.sciencedirect.com/science...64682608003787

This should give rise to further discussion / analysis by those with interest
and knowledge of cycles and their possible or potential impact on
weather?

There certainly could be some effect since a highly active sun can fluff
up the outer atmosphere and increases drag on satellites. It is also
very slightly brighter by 0.1% when active despite having dark sunspots
it also has bright faculae which occupy a much larger area.

A Dalton minimum-type possibility, eh?

There is always a slight possibility of anything.

There is some evidence that the solar dynamo is weakening and if it
drops below a certain threshold then sunspots will become rarer.

--
Regards,
Martin Brown

I noted that, Martin. There's more than enough evidence from the qualified scientific community supporting climate change.

Less evidence, yet, to show direct correlation to sun cycles and more work to be done I think? But gladly accept pointers to sources where this may not be do!

Even if there was a low sunspot cycle coming for #25, would the signal be over ridden in any event by what's happening with our climate?

That tipping point they talk about isn't that far away it seems, if it's not here already?

Meanwhile, the "weather" will continue to bounce around and vary cold/hot in the short term.....