RE: These glass beads explain climate change.
Fortunately we have only a couple of years to wait to see the accuracy of this model. I "believe" the sun is analogous to a pot of boiling water. When it is at its hottest if bubbles away. If you don't see bubbles it isn't as hot. I also "don't believe" that there is enough information to establish a causal relationship. Did the decrease in sunspots causing the Maunder Minimum precipitate the Mini Ice Age or is it possible the decrease in sunspots signal some other action which is also associated with temperature change. For instance one hypothesis is that the tidal forces of the inner planets affect the sun. If that is true the roughly 400 year variation of the earth's temperature is caused by the its action on the sun. Another consideration is the Earth's precession which has been attributed to the greening and desertifying the Sahara.
While I concede that the pollution that China is creating is disrupting the jet stream and causing really nasty weather in the US, I feel that there is other phenomena not explained by carbon emissions:
The magnetic pole started moving 100 years ago in a trajectory toward Siberia.
When the magnetic poles flip, Earth's protective magnetic field weakens, leaving its inhabitants at higher risk from the effects of space weather.
In the new study, researchers at the Australian National University analyzed the paleomagnetic record from 107,000 to 91,000 years ago by analyzing a stalagmite from a cave in southwestern China.
The team conducted magnetic analysis and radiometric dating on the meter-long sample, revealing the behaviour of the ancient magnetic field.
And, they found the magnetic field experienced a rapid shift over the span of about two centuries, decreasing in strength by about 90 percent when a field reversal occurred.
Source
Source: Cavit, via Wikimedia Commons
As can be seen by this illustration, the magnetic field strength has been waning for 3 hundred years.
Magnetic pole reversal will pose a big risk for humanity when it happens, that's for certain.
I think we don't have enough data to decide if the sunspots are a sign of an overall hot sun or if they are leading to an overall cooler sun.
I would argue that Jupiter and Saturn also have a similar effect on the sun due to their high mass.
That sounds rather like people who don't want to take responsibility towards our planet. Precession is just the effect that is holding earth's axis steady, leading to seasons.
Desertification is most likely created because of extensive agriculture which removes local plants, that keep desertification from happening, and replaces them by a monoculture of some profitable plant.
Evidence for this can be seen in the type of remains found in the deserts of Northern Africa
Source
I don't think that it is that people don't want to take responsibility but that it is a multivariate problem not just something that is one source. By focussing on one aspect (man made CO2) which should lead to global warming, it neglects that a number of events are happening at the same time. For instance in this video
you can see the expansion of rifts in Africa. In no way can CO2 be held responsible for this type of event. I think we have a situation of a sinking ship that catches fire. Focussing on one crisis while denying the other exists might lead to unfortunate consequences.
But how would precession lead to the desertification of the sahara?
Of course not, but the number of geological catastrophes is not rising. Only the number of reported ones is.
Even if the ship is actually sinking, we should not set it consciously on fire.
I agree that CO₂ is not our only problem, but most of the other problems I see are like CO₂ mostly made by ourself (except from a few earth-quakes here and there), and not by some widely unknown and badly documented astrophyical phenomenon.
Precession has affected weather a couple of ways. The first effect of the wobble is that about 8000 years ago the northern hemisphere received more sunlight. This in turn shifted the amount of rainfall which occurred in Africa. The second aspect is that during that time Earth was closest to the sun in the winter. Now it is closest during the summer. This article describes how a change in the "Hadley circulation" shifted with the end result of the Sahara turning to desert.
This phenomenon is actually known by scientists in the field. One problem with these other factors which are affecting climate is that they are a single news cycle event. Imagine if only precession was the cause (all the other factors were irrelevant). News broadcasters come on an say "Climate change is because of the wobble". There is no follow up to that item. People cannot change the wobble. You cannot raise money to fight the wobble etc.
Carbon caused climate change is something that can be spun out time and time again. I am perhaps being a little cynical but it is like investing in the stock market. When the bellboy has a hot tip ... its time to get out.
You are right, precession can change the local climate, but on a global scale it doesn't change average temperatures because even though it makes our summers warmer, it also makes our winters colder, meaning the average stays constant.
And if it would have any effect on the temperature, we would be able to see that effect in the temperature history of the earth every 26000 years.
Where I live, it is possible to vary between 100f (or more) to -50f (38c to -45c) summer to winter. Let us consider that 9000 to 6000 years ago the North hemisphere was closer to the sun in the winter then it is now. This would have made the temperature more moderate in both winter and summer. While the mathematics might be a little more complex than every 26000 years we can point out that the most recent interglacial occurred about 20,000 years ago. Before that there was another one about 40,000 which possibly killed out the majority of the neanderthals. Before that was the Toba Catastrophe roughly 75,000 years ago. While it was caused by the a volcano which caused a volcanic winter, that might have been a symptom of precession.
No a volcano definitely cannot be caused by precession.
Also based on your logic we should see a cooling right now instead of a warming. Also precession is a rather slow process → the temperature change would be slow, too. But we are seeing a rapid rise in average temperature in the last hundred years → the only way to explain this are greenhouse gases.
I am not sure I would definitely say that volcanic activity is not linked to precession
The scientific community have been trying to answer that question for about the last 10 years.
As far as the second part, I believe that it is more important to talk about change vs weather temperature rises or falls. Indeed the temperature in the area that I reside has been colder than when I was a child. If you look at temperature maps for about the last decade and you see a blue dot in the middle signifying below average temperature, that is where I live. Speaking from personal observation, the crops on our farm were finally planted June 19. It has never been this late before (due to cold wet conditions). It is a maxim that crops must be in before the first of June. A statistic is that you lose a bushel per acre of corn production for every day past the end of May. In an area that produces roughly 100 bushels per acre, you can see that we are starting the season off already with a roughly 20% loss. This video shows an aggregation of the crop failures that are heading our way this year largely US numbers.
This isn't due to warming it is due to it being too cold and wet. Of course this can be attributed to changes in the jet stream pulling the cold air from the arctic which might be attributed to China's pollution.
Earth's magnetic field
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of molten iron in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo. The magnitude of the Earth's magnetic field at its surface ranges from 25 to 65 microteslas (0.25 to 0.65 gauss). As an approximation, it is represented by a field of a magnetic dipole currently tilted at an angle of about 11 degrees with respect to Earth's rotational axis, as if there were a bar magnet placed at that angle at the center of the Earth.