2 January 2019 – Now that the year-end holidays are over, it’s time to get back on my little electronic soapbox to talk about an issue that scientists have had to fight with authorities over for centuries. It’s an issue that has been around for millennia, but before a few centuries ago there weren’t scientists around to fight over it. The issue rears its ugly head under many guises. Most commonly today it’s discussed as academic freedom, or freedom of expression. You might think it was definitively won for all Americans in 1791 with the ratification of the first ten amendments to the U.S. Constitution and for folks in other democracies soon after, but you’d be wrong.
The issue is wrapped up in one single word: dogma.
According to the Oxford English Dictionary, the word dogma is defined as:
“A principle or set of principles laid down by an authority as incontrovertibly true.”
In 1600 CE, Giordano Bruno was burned at the stake for insisting that the stars were distant suns surrounded by their own planets, raising the possibility that these planets might foster life of their own, and that the universe is infinite and could have no “center.” These ideas directly controverted the dogma laid down as incontrovertibly true by both the Roman Catholic and Protestant Christian churches of the time.
Galileo Galilei, typically thought as the poster child for resistance to dogma, was only placed under house arrest (for the rest of his life) for advocating the less radical Copernican vision of the solar system.
Nicholas Copernicus, himself, managed to fly under the Catholic Church’s radar for nearly a century and a quarter by the simple tactic of not publishing his heliocentric model. Starting in 1510, he privately communicated it to his friends, who then passed it to some of their friends, etc. His signature work, Dē revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), in which he laid it out for all to see, wasn’t published until his death in 1643, when he’d already escaped beyond the reach of earthly authorities.
If this makes it seem that astrophysicists have been on the front lines of the war against dogma since there was dogma to fight against, that’s almost certainly true. Astrophysicists study stuff relating to things beyond the Earth, and that traditionally has been a realm claimed by religious authorities.
That claim largely started with Christianity, specifically the Roman Catholic Church. Ancient religions, which didn’t have delusions that they could dominate all of human thought, didn’t much care what cockamamie ideas astrophysicists (then just called “philosophers”) came up with. Thus, Aristarchus of Samos suffered no ill consequences (well, maybe a little, but nothing life – or even career – threatening) from proposing the same ideas that Galileo was arrested for championing some eighteen centuries later.
Fast forward to today and we have a dogma espoused by political progressives called “climate change.” It used to be called “global warming,” but that term was laughed down decades ago, though the dogma’s still the same.
The United-Nations-funded Intergovernmental Panel on Climate Change (IPCC) has become “the Authority” laying down the principles that Earth’s climate is changing and that change constitutes a rapid warming caused by human activity. The dogma also posits that this change will continue uninterrupted unless national governments promulgate drastic laws to curtail human activity.
Sure sounds like dogma to me!
Once again, astrophysicists are on the front lines of the fight against dogma. The problem is that the IPCC dogma treats the Sun (which is what powers Earth’s climate in the first place) as, to all intents and purposes, a fixed star. That is, it assumes climate change arises solely from changes in Earthly conditions, then assumes we control those conditions.
Astrophysicists know that just ain’t so.
First, stars generally aren’t fixed. Most stars are variable stars. In fact, all stars are variable on some time scale. They all evolve over time scales of millions or billions of years, but that’s not the kind of variability we’re talking about here.
The Sun is in the evolutionary phase called “main sequence,” where stars evolve relatively slowly. That’s the source of much “invariability” confusion. Main sequence stars, however, go through periods where they vary in brightness more or less violently on much shorter time scales. In fact, most main sequence stars exhibit this kind of behavior to a greater or lesser extent at any given time – like now.
So, a modern (as in post-nineteenth-century) astrophysicist would never make the bald assumption that the Sun’s output was constant. Statistically, the odds are against it. Most stars are variables; the Sun is like most stars; so the Sun is probably a variable. In fact, it’s well known to vary with a fairly stable period of roughly 22 years (the 11-year “sunspot cycle” is actually only a half cycle).
A couple of centuries ago, astronomers assumed (with no evidence) that the Sun’s output was constant, so they started trying to measure this assumed “solar constant.” Charles Greeley Abbot, who served as the Secretary of the Smithsonian Institute from 1928 to 1944, oversaw the first long-term study of solar output.
His observations were necessarily ground based and the variations observed (amounting to 3-5 percent) have been dismissed as “due to changing weather conditions and incomplete analysis of his data.” That despite the monumental efforts he went through to control such effects.
On the 1970s I did an independent analysis of his data and realized that part of the problem he had stemmed from a misunderstanding of the relationship between sunspots and solar irradiance. At the time, it was assumed that sunspots were akin to atmospheric clouds. That is, scientists assumed they affected overall solar output by blocking light, thus reducing the total power reaching Earth.
Thus, when Abbott’s observations showed the opposite correlation, they were assumed to be erroneous. His purported correlations with terrestrial weather observations were similarly confused, and thus dismissed.
Since then, astrophysicists have realized that sunspots are more like a symptom of increased internal solar activity. That is, increases in sunspot activity positively correlate with increases in the internal dynamism that generates the Sun’s power output. Seen in this light, Abbott’s observations and analysis make a whole lot more sense.
We have ample evidence, from historical observations of climate changes correlating with observed variations in sunspot activity, that there is a strong connection between climate and solar variability. Most notably the fact that the Sporer and Maunder anomalies (which were times when sunspot activity all but disappeared for extended periods) in sunspot records correlated with historically cold periods in Earth’s history. There was a similar period from about 1790 to 1830 of low solar activity (as measured by sunspot numbers) called the “Dalton Minimum” that similarly depressed global temperatures and gave an anomalously low baseline for the run up to the Modern Maximum.
For astrophysicists, the phenomenon of solar variability is not in doubt. The questions that remain involve by how much, how closely they correlate with climate change, and are they predictable?
Studies of solar variability, however, run afoul of the IPCC dogma. For example, in May of 2017 an international team of solar dynamicists led by Valentina V. Zharkova at Northumbria University in the U.K. published a paper entitled “On a role of quadruple component of magnetic field in defining solar activity in grand cycles” in the Journal of Atmospheric and Solar-Terrestrial Physics. Their research indicates that the Sun, while it’s activity has been on the upswing for an extended period, should be heading into a quiescent period starting with the next maximum of the 11-year sunspot cycle in around five years.
That would indicate that the IPCC prediction of exponentially increasing global temperatures due to human-caused increasing carbon-dioxide levels may be dead wrong. I say “may be dead wrong” because this is science, not dogma. In science, nothing is incontrovertible.
I was clued in to this research by my friend Dan Romanchik, who writes a blog for amateur radio enthusiasts. Amateur radio enthusiasts care about solar activity because sunspots are, in fact, caused by magnetic fields at the Sun’s surface. Those magnetic fields affect Earth by deflecting cosmic rays away from the inner solar system, which is where we live. Those cosmic rays are responsible for the Kennelly–Heaviside layer of ionized gas in Earth’s upper atmosphere (roughly 90–150 km, or 56–93 mi, above the ground).
Radio amateurs bounce signals off this layer to reach distant stations beyond line of sight. When solar activity is weak this layer drops to lower altitudes, reducing the effectiveness of this technique (often called “DXing”).
In his post of 16 December 2018, Dan complained: “If you operate HF [the high-frequency radio band], it’s no secret that band conditions have not been great. The reason, of course, is that we’re at the bottom of the sunspot cycle. If we’re at the bottom of the sunspot cycle, then there’s no way to go but up, right? Maybe not.
“Recent data from the NOAA’s Space Weather Prediction Center seems to suggest that solar activity isn’t going to get better any time soon.”
After discussing the NOAA prediction, he went on to further complain: “And, if that wasn’t depressing enough, I recently came across an article reporting on the research of Prof. Valentina Zharkova, who is predicting a grand minimum of 30 years!”
He included a link to a presentation Dr. Zharkova made at the Global Warming Policy Foundation last October in which she outlined her research and pointedly warned that the IPCC dogma was totally wrong.
I followed the link, viewed her presentation, and concluded two things:
The research methods she used are some that I’m quite familiar with, having used them on numerous occasions; and
She used those techniques correctly, reaching convincing conclusions.
Her results seems well aligned with meta-analysis published by the Cato Institute in 2015, which I mentioned in my posting of 10 October 2018 to this blog. The Cato meta-analysis of observational data indicated a much reduced rate of global warming compared to that predicted by IPCC models.
The Zharkova-model data covers a much wider period (millennia-long time scale rather than decades-long time scale) than the Cato data. It’s long enough to show the Medieval Warm Period as well as the Little Ice Age (Maunder minimum) and the recent warming trend that so fascinates climate-change activists. Instead of a continuation of the modern warm period, however, Zharkova’s model shows an abrupt end starting in about five years with the next maximum of the 11-year sunspot cycle.
Don’t expect a stampede of media coverage disputing the IPCC dogma, however. A host of politicians (especially among those in the U.S. Democratic Party) have hung their hats on that dogma as well as an array of governments who’ve sold policy decisions based on it. The political left has made an industry of vilifying anyone who doesn’t toe the “climate change” line, calling them “climate deniers” with suspect intellectual capabilities and moral characters.
Again, this sounds a lot like dogma. It’s the same tactic that the Inquisition used against Bruno and Galileo before escalating to more brutal methods.
Supporters of Zharkova’s research labor under a number of disadvantages. Of course, there’s the obvious disadvantage that Zharkova’s thick Ukrainian accent limits her ability to explain her work to those who don’t want to listen. She would not come off well on the evening news.
A more important disadvantage is the abstruse nature of the applied mathematics techniques used in the research. How many political reporters and, especially, commentators are familiar enough with the mathematical technique of principal component analysis to understand what Zharkova’s talking about? This stuff makes macroeconomics modeling look like kiddie play!
But, the situation’s even worse because to really understand the research, you also need an appreciation of stellar dynamics, which is based on magnetohydrodynamics. How many CNN commentators even know how to spell that?
Of course, these are all tools of the trade for astrophysicists. They’re as familiar to them as a hammer or a saw is to a carpenter.
For those in the media, on the other hand, it’s a lot easier to take the “most scientists agree” mantra at face value than to embark on the nearly hopeless task of re-educating themselves to understand Zharkova’s research. That goes double for politicians.
It’s entirely possible that “most” scientists might agree with the IPCC dogma, but those in a position to understand what’s driving Earth’s climate do not agree.