I am not really sure where to start in taking this post apart, piece by piece, without boring every one else senseless?
What worries me even more is that there are still people out there that categorically refuse to believe that it is human activity, coupled with raping and pillaging a fragile eco-system, that is driving world temps higher and higher.....literally by the day......we have even invented a word for manīs era, the anthropocene, "relating to or denoting the current geological age, viewed as the period during which human activity has been the dominant influence on climate and the environment."......but no, nooooo, no....it must the sun as we "wobble" around it.....gawd give me strength.
The categoric proof is out there, 90 odd % of scientists agree. There are scientific, peer-reviewed papers on CO2 as a greenhouse gas, itīs lifetime in the atmosphere, itīs radiative forcing qualities, itīs increase in the atmosphere since 1750, itīs effect has been narrowed down to Watts per metre squared and typed into hundreds of climate models (some using my own laptop and thousands of volunteers worldwide to create "super -computers")....methane similarly, which breaks down over much longer time cycles to produce water and even more CO2.....after water vapor (which will get greater as the temps ramp up), CO2 and Methane are the next two most important, and it is HUMANS ramping it up into the atmosphere in gigatons, far in excess of the last mass extinction.
Apparently none of us understand Milankovitch cycles?....itīs a fancy name for Glacials, inter-Glacials and Ice Ages that occur roughly every 100,000 years. So my simple question is this: if the earth has an average temp of 15 degrees, and has increased by 1.5 degrees (10%) since man started the Industrial Revolution and dug up huge quantities of coal to turn into CO2, then later oil and gas....why have temps gone up 10% in 250 years which is a 0.25% fraction of your latest cycle ie a tiny blip on your cycle timeline with our temps rising sharply, why? Secondly - Surely, if we are already 20 to 25,000 years into a "cycle", surely the temps should be falling by now towards the next ice age or inter-Glacial at MINUS 28 degrees average? My understanding of a "cycle" is that we spend 20 to 25% of the elliptical orbit close to the sun (inter-glacial) and 75 to 80% of the time freezing our tits off! The last Ice Age was circa 25,000 years ago BUT ITīS GETTING HOTTER, AND HOTTER FASTER (if that makes any sense).
The ice caps are melting at a faster and faster pace (the Arctic was the lowest on record 3 days ago, and is getting relatively lower each day for that historic date, I check them every day, sad huh). The Antarctic similarly, glaciers around the world are melting revealing dead bodies from hundreds to thousands of years old, woolly mammoths are appearing, defrosted, all over Siberia, vast areas of tundra permafrost are thawing out or on fire.....it ainīt stopping, itīs getting worse.
Grrrr - Just typed all that above and it turned out that Swedish Magpieīs theory has already been debunked a few times on the tinternet, namely here: "Contrarians who dislike the idea of climate change today being due to the enhanced greenhouse effect are only too willing to exaggerate the effects of the Milankovitch cycles. It is likely that they will use the exaggerated diagrams of the solar system to leave a false impression that greenhouse gases cannot have any effect. An exaggerated eccentricity also creates a visual impression of massive changes in Sun-Earth distances and would mean precession effects ( discussed briefly below) to be simultaneously exaggerated. This allows disbelief for the need for positive feedback effects and hold on to an whim that there may be some unknown change in the orbits of the Earth that could account for the present warming we see today"
https://medium.com/@pathackett/the-m...y-7b424ba74113
.....and here "The myth is wrong for two reasons:
First, to infer that humans can't be behind today's climate change because climate changed before humans is bad reasoning (a non-sequitur). Humans are changing the climate today mainly via greenhouse gas emissions, the same mechanism that caused climate change before humans.
Second, to imply we have nothing to fear from today's climate change is not borne out by the lessons from rapid climate changes in Earth's past.
Third rock from the Sun – why we’re not deep frozen.
A rocky planet this far from the sun should be frozen solid and lifeless at an average temperature of -18°C (0°F). The fact that it isn’t is due to greenhouse gasses in the atmosphere, mainly CO2. These atmospheric gasses have been in a delicate balance with the Earth’s oceans, the biosphere, and even the geosphere (all the rocks and sediments). Whether it was frigid ice ages or the steamy climates of the Eocene and the age of the dinosaurs, every change in the Earth (like a decrease in the rate of tectonic plate subduction or an increase in the rate of mountain building) caused a proportional change in CO2 in the atmosphere and in the oceans, and every change in atmospheric CO2 caused a proportional reaction in global temperatures, climate and ocean chemistry.
Ice ages
Scientists have shown that CO2 and climate moved in lock-step throughout the Pleistocene ice ages. The ice ages were actually many pulses of cold glacial phases interspersed with warmer interglacials. These pulses had a distinct regularity caused by wobbles in Earth’s orbit around the Sun (Milankovitch cycles). When Earth’s orbit reduced the intensity of sunlight in the northern hemisphere, the Earth went into a glacial phase. When the orbital cycle brought increased the intensity of insolation in the northern hemisphere, ice sheets melted and we went into a warm interglacial."
https://skepticalscience.com/climate...termediate.htm
Sorry to bore everyone.