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Neven

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Re: Solar cycle
« Reply #50 on: December 19, 2018, 10:16:07 PM »
Yes, be careful not too wade too deep into the solar stuff, and end up in climate risk denier territory.
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gerontocrat

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Re: Solar cycle
« Reply #51 on: December 21, 2018, 10:33:59 AM »
'Tis the solstice.

Winter Solstice 2018 will be at 22:23 hrs Greenwich mean Time (GMT) on Friday, 21 December.

This is the solar cycle that interests me most, apart from the butterfly wings image of the sunspot cycles.

Imagine it is pre-history, and you do not know if this year the sun will start to rise higher in the sky again. Perhaps this time it will get lower and lower in the sky until......

"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

TerryM

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Re: Solar cycle
« Reply #52 on: December 21, 2018, 01:21:56 PM »
'Tis the solstice.

Winter Solstice 2018 will be at 22:23 hrs Greenwich mean Time (GMT) on Friday, 21 December.

This is the solar cycle that interests me most, apart from the butterfly wings image of the sunspot cycles.

Imagine it is pre-history, and you do not know if this year the sun will start to rise higher in the sky again. Perhaps this time it will get lower and lower in the sky until......
We probably should pop an extra virgin in the volcano just to be sure. ???
Terry

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Re: Solar cycle
« Reply #53 on: December 21, 2018, 02:38:34 PM »
Not interested in the dark side of this earth cycle at all, my 5360Wp PV's has produced 0.06kWh so far today and that's pretty much it, it's getting dark(er). A little snow on them for once...
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gerontocrat

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Re: Solar cycle
« Reply #54 on: December 21, 2018, 04:00:59 PM »
Not interested in the dark side of this earth cycle at all, my 5360Wp PV's has produced 0.06kWh so far today and that's pretty much it, it's getting dark(er). A little snow on them for once...
Earth Cycle !?

We are in pre-history and you are telling the assembled throng it is not the sun rising and falling at various times of the year but movement of the earth around the sun and inclination of the earth's axis wot's doing it.

The Priest decides, to general acclamation, forget the virgin, it is you that's being thrown into the volcano. Insulting the Sun God is dangerous.

Come to think of it, there are plenty of evangelical churches today where a similar outcome would be likely.
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Sleepy

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Re: Solar cycle
« Reply #55 on: December 21, 2018, 09:05:33 PM »
Yet another study using development of the solar polar field strength claims a similar or slightly stronger cycle 25. Open access, just adding Fig 4.
https://www.nature.com/articles/s41467-018-07690-0
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vox_mundi

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Re: Solar cycle
« Reply #56 on: January 23, 2019, 05:12:31 PM »
Debunking the Solar-Cycle/North Atlantic Winter Weather Connection
https://phys.org/news/2019-01-debunking-solar-cyclenorth-atlantic-winter-weather.html

Quote
... in a research paper published in Nature Geoscience Monday, Gabriel Chiodo, Jessica Oehrlein and Lorenzo Polvani, scientists at Lamont-Doherty Earth Observatory and the School of Engineering at Columbia University and other colleagues present evidence that there is no definite connection between the solar cycle and the NAO.

The research essentially debunks what was considered a "demonstrated link" between the 11-year sun cycle and winter weather over the northern hemisphere and found it is actually, for the most part, a coincidental alignment. With the use of sophisticated computer modeling and extended observations, the new research shows that before 1960 evidence of any correlation simply vanishes.

"What we're saying is, the theory was basically a mirage," said Polvani.


Gabriel Chiodo et al. Insignificant influence of the 11-year solar cycle on the North Atlantic Oscillation, Nature Geoscience (2019).
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Alexander555

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Re: Solar cycle
« Reply #57 on: May 03, 2019, 10:30:04 AM »