Quote:
Originally Posted by Gaylenwoof
But, based on the standard climate drivers over eons (relating to Earth's tilt and orbit), we ought to be in a cooling period, but instead we are in a warming period.
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If Milankovitch Cycles drove ice ages, then Earth should have experience ice ages regularly, but it didn't.
In fact, for several 100 Million years, there was no ice whatsoever on Earth. The entire Earth was a lush tropical paradise. That includes Alaska, Canada, northern Europe and Siberia.
Primates that evolved in Africa post-Chicxulub about 60 Million years ago migrated into the tropical rain forests of Europe and Asia. A massive volcanic eruption on the scale of the Deccan Traps created a land-bridge between northern Europe and Alaska/Canada. Primates crossed the land-bridge and inhabited the tropical rain forests in Alaska/Canada, then migrated south into the tropical rain forests of the US, continuing their migration into Central and South America.
Then, 35 Million years ago, the climate changed. The tropical rain forests at high latitudes started dying off, and the die-off continued throughout the US, Europe, most of Asia, and most of Central and South America, as well as most of Africa.
Of the two dozen or so primate species in the Americas, only 8 species survived, and you can find them in the tropical rain forests of Belize, Guatemala, Nicaragua and Honduras, and in South America in Brasil. I used to see the little bastards while running combat patrols in the mountain jungles in Honduras.
That they were here, there can be no doubt. We have found their fossilized remains all over Alaska/Canada and the US, in places like Kansas. Fossilized leaves clearly indicate the presence of tropical rain forests in Alaska/Canada and the US, and the same for Europe and Asia.
The triggering event was the Antarctic Continent. The minute it entered the South Polar Region through the action of tectonic plates, the climate started changing and the Antarctic Continent is the primary driver of climate now.
The minute the Antarctic Continent leaves the South Polar Region, and it eventually will over the next several Million years, your climate will return to tropical rain forests everywhere on Earth.
We have this gem from the architect of AGW and the chief fanatic:
In his book Storms of my Grandchildren, noted climate scientist James Hansen issued the following warning: "[i]f we burn all reserves of oil, gas, and coal, there is a substantial chance we will initiate the runaway greenhouse. If we also burn the tar sands and tar shale, I believe the Venus syndrome is a dead certainty."
https://news.nationalgeographic.com/...imate-science/
The funny thing is that for the first 2.5 Billion years of Earth's existence, the atmosphere had a substantially higher CO2 level, and yet there was no runaway greenhouse effect.
Initially, Earth's atmosphere was N2, CO2, Methane and Ammonium Hydrides.
Was there a runaway greenhouse gas effect? Nope.
After a few 100 Million years, the Methane was absorbed and the Ammonium Hydrides had precipitated out, leaving 76% N2 and 24% CO2, but there was no runaway greenhouse gas effect over the next 2 Billion years.
There was no O2 in the atmosphere, because it hadn't been created yet, and it would take 2 Billion years before O2 was created.
Most embarrassingly, with CO2 at 240,000 ppm, you had two major glaciations, the Pangolan and the Huronian.
All scientists agree the Earth was encased in ice up to the Tropics (of Cancer and Capricorn). Some scientists are of the opinion the entire Earth was encased, some believe the equatorial band -- the Tropics -- had ice packs and ice floes, but not completely froze over, and some believe the Tropics were ice free.
If you watch NOVA's
Life's Rocky Start, you can see the level of fanaticism, because those scientists make the absurd claim that volcanic eruptions increased CO2 levels -- in an atmosphere that already had CO2 levels of 240,000 ppm -- and caused "global warming" that ended both the Pangolan and Huronian Ice Ages.
After 2.5 Billion years, plankton-like organisms popped up in the ocean, and through photosynthesis, released O2 into the ocean, where it readily bonded with reactive metals dissolved in the ocean, like iron.
When the dissolved iron bonded with the free O2 in the ocean, it formed Iron Oxide (rust) and precipitated out, falling to the sea floor and over Millions of years, formed bands of Iron Oxide several centimeters to several meters thick.
You can see those Iron bands today, if you go to Wisconsin, Minnesota, Michigan, parts of Canada, Australia and South Africa. After the Iron absorbed all of the free O2, the O2 started bonding with other reactive metals, but those metals are not nearly as abundant as Iron.
Once the free O2 bonded with all the dissolved metals and minerals in the ocean, it started to saturate the ocean, until it could hold no more, then it started leaching into the atmosphere.
Free O2 in the atmosphere readily bonded with exposed reactive metals and minerals on the Earth's sole land mass, and then it started to accumulate in the atmosphere.
O2 is poison to anaerobic bacteria. It killed them, but one eventually mutated and that mutation allowed it to tolerate O2. Then, later another mutation allowed bacteria to not merely tolerate O2, but use it as part of its life-cycle.
That altered the course of Evolution on Earth.
The proliferation of photosynthetic organisms in the ocean absorbed CO2 from the atmosphere through the ocean and replaced it with O2, until eventually it reached current levels. Even so, the volume of O2 in the atmosphere has still varied over the last 1 Billion years, sometimes as low as 15% and sometimes as high as 35%, currently being at 21%.
If you look at the Carboniferous, Permian and Triassic Period, CO2 levels were about 180 ppm, yet global temperatures were 36°F warmer than present.
That fact alone completely refutes CO2 as a driver of temperature.
You, of all people, should be smart enough to know that the claims by the IPCC, which are part of their models, that CO2 is dispersed in the atmosphere are false.
CO2 at 44 g/mol is heavier than air, and far heavier than N2 (14 g/mol) and O2 (32 g/mol).
CO2 is not dispersed in the atmosphere. It concentrates at lower levels. That's why workers who work in confined or enclosed spaces, like storage tanks and underground sewer, natural gas or water lines use CO2 alarms, to indicate when CO2 levels are too high, because CO2 concentrates right at the level humans stand, and without a CO2 alarm, you'll die of asphyxiation if you remain working too long. Note that each breath contains CO2 at 48,000 ppm, so it accumulates rapidly in enclosed or confined spaces.
Your claim that we ought to be in a cooling period defies historical evidence.
An Inter-Glacial Period can last 12,000 to 30,000 years. The previous Inter-Glacial Period was 26,000 years.
This Inter-Glacial Period may last another 5,000 to 12,000 years, and it would fall within the normal range of Inter-Glacial Periods.
The claim that Earth should be entering a cooling period is based on skewed data.
The entrance to this Inter-Glacial Period was anomalous.
The Earth warmed very rapidly over a very short period, then began cooling.
This very rapid warming over a very short period was caused by a cataclysmic event that nearly destroyed the entire Western Antarctic Ice Sheet (WAIS).
Since the Eastern Antarctic Ice Sheet was in no way affected, we can dismiss the cause as a weather or climate-induced phenomenon.
That means the cause could only be a localized event, possibly the eruption of one of the several underwater volcanoes under WAIS, or possibly a small comet or asteroid that impacted in the ocean near or adjacent to WAIS.
Once the Earth made its adjustment to this anomalous phenomenon, we're right back to our regularly scheduled Inter-Glacial Period.
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