Tag Archives: sunspots

Maunder and Dalton Sunspot Minima

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. Someone asked me, well, what about the cold temperatures during … Continue reading

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Posted in Climate News, Solar | Tagged , , , , , , , | 1,018 Comments

Sunspots and Sea Surface 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 case Marcel … Continue reading

Posted in Solar | Tagged , , , , | 459 Comments

Well, Color Me Gobsmacked!

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. The basic concept is quite simple. I fit … Continue reading

Posted in Solar | Tagged , , , | 167 Comments

The Effect of Gleissberg’s “Secular Smoothing”

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 maxima after they have been … Continue reading

Posted in Climate News, Solar | Tagged , , , | 54 Comments

The Tip of the Gleissberg

Guest Post by Willis Eschenbach A look at Gleissberg’s famous solar cycle reveals that it is constructed from some dubious signal analysis methods. This purported 80-year “Gleissberg cycle” in the sunspot numbers has excited much interest since Gleissberg’s original work. … Continue reading

Posted in Solar | Tagged , , | 96 Comments

Cosmic Rays, Sunspots, and Beryllium

Guest Post by Willis Eschenbach In investigations of the past history of cosmic rays, the deposition rates (flux rates) of the beryllium isotope 10Be are often used as a proxy for the amount of cosmic rays. This is because 10Be … Continue reading

Posted in Climate News, Cosmic rays | Tagged , , , , | 242 Comments

Solar Periodicity

Guest Post by Willis Eschenbach I was pointed to a 2010 post by Dr. Roy Spencer over at his always interesting blog. In it, he says that he can show a relationship between total solar irradiance (TSI) and the HadCRUT3 global … Continue reading

Posted in Solar | Tagged , , , , , , | 293 Comments

Usoskin Et Al. Discover A New Class of Sunspots

Guest Post by Willis Eschenbach There’s a new post up by Usoskin et al. entitled “Evidence for distinct modes of solar activity”. To their credit, they’ve archived their data, it’s available here. Figure 1 shows their reconstructed decadal averages of … Continue reading

Posted in Bad science | Tagged , , , , | 140 Comments

Sunny Spots Along the Parana River

Guest Post by Willis Eschenbach In a comment on a recent post, I was pointed to a study making the following surprising claim: Here, we analyze the stream flow of one of the largest rivers in the world, the Parana … Continue reading

Posted in Bad science | Tagged , , , , | 163 Comments

Sunspots and Sea Level

Guest Post by Willis Eschenbach I came across a curious graph and claim today in a peer-reviewed scientific paper. Here’s the graph relating sunspots and the change in sea level: And here is the claim about the graph: Sea level … Continue reading

Posted in Bad science, Consensus | Tagged , , , | 381 Comments

SOON AND BRIGGS: Global-warming fanatics take note – Sunspots do impact climate

From the The Washington Times – By Willie Soon and William M. Briggs Scientists have been studying solar influences on the climate for more than 5,000 years.

Posted in Alarmism, Solar, Uncategorized | Tagged , , , , , , , , | 378 Comments

New paper suggests sun may be headed for a Maunder minimum

Just published in GRL, a new paper by Lockwood et al that suggests the sun may be headed for a Maunder type minimum.: The persistence of solar activity indicators and the descent of the Sun into Maunder Minimum conditions Key … Continue reading

Posted in Science, Solar | Tagged , , | 189 Comments

All Quiet Alert

“All Quiet Alert” – That sounds like an oxymoron, and maybe it is, but the sun is extremely quiet right now, so much in fact that the Solar Influences Data Center in Belgium has issued an “All quiet alert” on … Continue reading

Posted in Climate_change, Science | Tagged , , , , | 51 Comments