I am always trying to get a handle on longer term future weather, and this article was published Monday, making me wonder if anybody can point to a relation to weather in the 70 year cycle being discussed. https://www.nature.com/articles/s41561-022-01112-z
That article looked very interestng from what I could read without subscribing. Earth moves in weird and wonderful ways. I do hope somebody can figure out what this will mean long-term. If I think about it (way too early to think yet) the doings of the core should impact the doings of the surface since the planet is, well, a whole planet with everything working together.
Last year everybody was complaining about tomatoes not making and too early heat. I know the weather people said that Tonga ocean volcano made a lot of moisture shoot up and it was supposed to trap heat for 2-3 years but maybe there was even more going on? https://www.jpl.nasa.gov/news/tonga-eruption-blasted-unprecedented-amount-of-water-into-stratosphere
As far as I understand, it is not the first time the core of the earth has altered speed and/or direction, and frightens me less than the thought of our planet devoid of carbon dioxide, which would be the end of plant life and ultimately the whole human race. I believe our carbon content at the moment is much lower than it has ever been. I do not believe this is caused by the earth's inhabitants, but that it is a natural cycle which has been progressing for a few million years.
I wasn't aware of a 70 year cycle with the core but I'd guessed there was something much longer term going on with it that's caused the Earth's polarity to shift several times in Geological history. North has become South several times in the past. The way the planet's weather works probably doesn't get much affected by the magnetic field (might make the odd pigeon fly the wrong way) If it affects the tilt of the Earth (Angle from vertical relative to the plane of the solar system) then that could affect the temperatures a bit. At present Earth's eliptical orbit means that the Northern summer is colder and the winter is warmer. The opposite is true in the South. Tilt would probably only instigate another ice age if we were on a circular orbit so that one shouldn't be a problem. Thing I would worry about is the longer term cycle (100,000 years I think) where the whole plane of the solar system dips. Now this shouldn't affect solar output as we don't change our distance from the sun (we all move together) but this cycle co incides with ice ages so well that it's probably connected. One theory as to why this might be is that we might dip in and out of a stellar dust cloud which cuts down the sunlight hitting the planets.
Two things would happen. First is the magnetic field would probably fail so not only would the pigeons fly the wrong way, charged particles from the sun (the ones we see as the aurora) would irradiate the surface and kill everything Secondly, with no tectonic activity the weather would erode all the mountains, turn them into sand and mud and wash them all into the oceans. With no new uplift or volcanic activity all the land will eventually become flat and probably knee deep or more in water Won't matter at all though as there'd be no one left to complain about it
Maybe the periodic spinning reversals are like a yoyo or one of those fidget ball bearing devices that go back and forth, back and forth. Set into motion by the Chucxulub asteroid impact in the Yucatan that caused a mile high tsunami that drowned dinosaurs in North Dakota and caused their extinction everywhere? I imagine that one hurt! https://www.bbc.com/news/science-environment-47755275
I like that theory @Daniel W Conservation of energy could account for that. There's remnants of the impact exposed a few miles from here, in the cliff at Ramsgate... The top of the chalk (Cretaceous period) had been eroded and just like today, there were flint nodules eroded out of it that were lying on the top of it when the blast wave from the impact hit... The blast wave shattered the flint on the surface The lower flints were only broken by the blast wave but the darker flints above were altered by the subsquent heat as the debris ejected from the impact crater fell back to Earth. The energy contained in the debris cooked everything that was caught outside that day.
