Amid the dimmest Sun since 1978 – a month without sunspots

The sun today is cue-ball blank, a perfect unmarred sphere: The sun has just passed an entire calendar month with no sunspots. The last time this happened, in August 2008, the sun was in the nadir of a century-class Solar Minimum. The current stretch of blank suns shows that Solar Minimum has returned, and it…

Advertisements

Sunspots: Labitzke Meets Bonferroni

Guest Post by Willis Eschenbach In a previous thread here on WUWT, a commenter said that the sunspot-related variations in solar output were shown by Labitzke et al. to affect the stratospheric temperature over the North Pole, viz: Karin Labitzke cracked that nut. She was the first one to find a correlation between not one…

Scottish Sunspots

Guest Post by Willis Eschenbach [See Update At End] In a recent post, Anthony published Leif Svalgaard’s new paper showing 9,000 years of reconstructed solar activity. Svalgaard paper: Reconstruction of 9000 years of Solar Activity In the discussion, someone pointed out that the “Maunder Minimum”, a time of very low solar activity, corresponds with the…

Oddly quiet sun: 3 weeks without sunspots

The sun has been blank for 21 straight days–a remarkable 3 weeks without sunspots. This is an almost decade-class event. The last time the sun lost its spots for 21 consecutive days was in the year 2009 coming on the heels of an historic solar minimum. With the current stretch of blank suns, solar minimum…

NASA: Sunspots Vanishing Faster than Expected

by Dr. Tony Philips, NASA Spaceweather Sunspots are becoming scarce. Very scarce. So far in 2018 the sun has been blank almost 60% of the time, with whole weeks going by without sunspots. Today’s sun, shown here in an image from NASA’s Solar Dynamics Observatory, is typical of the featureless solar disk: The fact that…

Paintings, sunspots and frost fairs: Rethinking the Little Ice Age

The whole concept of the ‘Little Ice Age’ is ‘misleading’, as the changes were small-scale, seasonal and insignificant compared with present-day global warming, a group of solar and climate scientists argue. Explanations for the cooling to Earth’s climate, thought to have occurred between the 16th and 19th centuries, include low solar activity, volcanic eruptions, human…

Chinese Sunspots

Guest Post by Willis Eschenbach [See also the new Update at the end of the post.] I see that there is a new paper from China causing a great disturbance in the solar force … as discussed here on WUWT, the claim is that the El Nino Modoki Index, which is an index of sea…

CEEMD and Sunspots

Guest Post by Willis Eschenbach I’ve been investigating the use of the “complete ensemble empirical mode decomposition” (CEEMD) analysis method, which I discussed in a previous post entitled Noise-Assisted Data Analysis. One of the big insights leading to modern signal analysis was the brilliant idea of Joseph Fourier. He realized that any given waveform can…

Sunspots and Norwegian Child Mortality

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 here. It claimed that in Norway in the 1700s and 1800s the solar activity at birth affected a child’s survival chances. As you might imagine, this…