Paper that claimed the Sun caused global warming gets retracted | Hacker News Reader

Paper that claimed the Sun caused global warming gets retracted

arstechnica.com

28 pointsTomte8 comments

The discussion linked to in the arstechnia.com article is fascinating. The paper's author has blinders on. https://pubpeer.com/publications/3418816F1BA55AFB7A2E6A44847...

If this is about the sun moving because of not being centered, that doesn't make any sense at all to me.

Most of the wobble would be Jupiter, so shouldn't Jupiter's orbit be the approximate period of the wobble? Which is 11 years, which is obviously way too short to be in a discussion about global warming.

I found a picture on Wikipedia that seems to confirm that the barycenter takes about a decade to go from near the center of the sun to roughly the furthest away that it gets.

https://upload.wikimedia.org/wikipedia/commons/0/0c/Solar_sy...

11 - 15 years is exactly the period of the "standard business cycle", which was established by the boom/bust nature of economies that depended primarily on agriculture. Farmers considered it common knowledge that the "business cycle" depended on the Sun's variability.

So, there is a definite, well-known, historically traced effect that occurs on around that time scale. It would take serious study to move past the coincidence level, but it's not something that can be dismissed out of hand, either.

Uh, it's also the length of the sunspot cycle.

Reminds me to the Milankovitch cycles that are an accepted phenomenon but still not fully explained

https://en.wikipedia.org/wiki/Milankovitch_cycles

https://climate.nasa.gov/news/2948/milankovitch-orbital-cycl...

No retraction notices here: https://www.thesun.co.uk/news/5219383/britain-mini-ice-age-2... https://www.thesun.co.uk/news/4503006/global-warming-sums-ex...

tl;dr The Sun is causing global warming, by spreading misinformation. :-)

I have a friend who does atmospheric physics research (nothing surface level) and who looks into solar intensity from time to time as a side thing. IIRC, she told me there are intensity cycles that definitely do affect the earths temperature and that they vary over a course of only a few years. I think she said we are at a solar minimum right now, which is making it look like global warming has been less than it is. Apologies if I am mis-remembering.

Correct, the temperature difference is small but affects weather:

https://www.exploratorium.edu/solarmax/whatis.html

https://www.giss.nasa.gov/research/briefs/rind_03/

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