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...
  • Noise Assisted Data Analysis Fri, 11 Dec 15, 2:42pm
    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...
  • Is The Climate Chaotic? Fri, 23 Oct 15, 4:49am
    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...
  • The Missing ~ 11-Year Signal Wed, 19 Aug 15, 6:35pm
    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...
  • Splicing Clouds Sat, 1 Nov 14, 7:51pm
    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...
  • Maunder and Dalton Sunspot Minima Tue, 24 Jun 14, 5:00am
    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...
  • Well, Color Me Gobsmacked! Tue, 27 May 14, 12:14pm
    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...
  • The Tip of the Gleissberg Sun, 18 May 14, 11:35am
    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...
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