sunspots, Tag

Spotless Sun June 29th, 2016  | Spaceweather.com  | SDO/HMI The Sun is spotless again. I hasn’t been this inactive for a hundred years. This week there are a spate of news stories about a little ice age...

Guest Post by Willis Eschenbach Once again, Dr. Curry’s “Week in Review-Science and Technology” doesn’t disappoint. I find the following: Evidence of a decadal solar signal in the Amazon River: 1903 to...

Guest Post by Willis Eschenbach After I’d published my previous post on the Hurst Exponent entitled A Way To Calculate Effective N, I got an email from Dan Hughes which contained a most interesting idea...

Guest Post by Willis Eschenbach Dr. Nir Shaviv and others strongly believe that there is an ~ 11-year solar signal visible in the sea level height data. I don’t think such a signal is visible. So I decided to look for it...

Guest Post by Willis Eschenbach Dr. Nir Shaviv has kindly replied in the comments to my previous post. There, he says: Nir Shaviv  August 15, 2015 at 2:51 pm There is very little truth about any of the points raised by Eschenbach...

Guest Post by Willis Eschenbach I see that Dr. Nir Shaviv has a blog post up regarding the recent fixing of problems in the historical sunspot record. He put up several interesting graphs and made several interesting claims,...

While the Earth is heating up due to climate change, the sun could have something to say about it -- and send us into a mini ice age sometime in the next 15 years...

While the Earth is heating up due to climate change, the sun could have something to say about it -- and send us into a mini ice age sometime in the next 15 years...

Guest Post by Willis Eschenbach In January there was a study published by The Royal Society entitled “Solar activity at birth predicted infant survival and women’s fertility in historical Norway”, available...

Guest Post by Willis Eschenbach So once again, I have donned my Don Quijote armor and continued my quest for a ~11-year sunspot-related solar signal in some surface weather dataset...

Guest Post by Willis Eschenbach In a recent interchange over at Joanne Nova’s always interesting blog, I’d said that the slow changes in the sun have little effect on temperature...

Guest Post by Willis Eschenbach I thought I was done with sunspots … but as the well-known climate scientist Michael Corleone once remarked, “Just when I thought I was out … they pull me back in”.  In this...

Guest Post by Willis Eschenbach I’ve developed a curious kind of algorithm that I’ve humorously called “slow Fourier analysis”, but which might be better described as a method for direct spectral analysis...

Guest Post by Willis Eschenbach ABSTRACT: Slow Fourier Transform (SFT) periodograms reveal the strength of the cycles in the full sunspot dataset (n=314), in the sunspot cycle maxima data alone (n=28), and the sunspot cycle...

Guest Post by Willis Eschenbach Back in the 1940s, a man named Wolfgang Gleissberg was studying sunspot cycles. To do so, in his own words, he introduced a new method, viz: When I introduced the method of secular smoothing...