Climate – It’s Complicated

Silicified Permian tree stump preserved upright in permineralised peat at the top of a coal seam, Prince Charles Mountains.

Antarctica and Gondwana were amalgamated into the megacontinent Pangea during the Mesozoic. The enormous scale of this megacontinent (reaching almost pole-to-pole) meant that cool polar ocean currents were deflected to mix with warm equatorial waters, creating oceans with relatively even, mild temperatures. This helped to maintain the ice-sheet-free greenhouse world of the Mesozoic. However, Pangea started to break up in the Jurassic and piece after piece began to separate throughout the Cretaceous.
Antarctica remained connected to South America and Australia until about 35 million years ago and, up to that time, retained a diverse flora. At the end of the Eocene, both Australia and South America pulled away northwards allowing the South Circumpolar Current to develop – an ocean current that maintains a continuously flowing pool of cold water around Antarctica. Once this cold-water current was established, it trapped Antarctica in a frigid grip.
Ice caps began to develop on the highlands then rapidly linked up to form an extensive ice sheet. The ice has advanced and retreated many times with changes in the global climate and hardy plants such as the southern beech trees (Nothofagus) managed to linger on in isolated Antarctic refugia until as recently as five million years ago. However, intensified global cooling since that time has eliminated all woody plants and the ice sheet is now four kilometres thick at its center.
Cross-section of Permian fossil wood showing prominent seasonal growth rings.
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12 Comments
card802
card802
August 1, 2017 8:48 pm

I’m fully convinced that plate tectonics is the driving force behind the earths climate in the past, and going forward.
Man is just a fart in the wind.

ZombieDawg
ZombieDawg
August 1, 2017 9:14 pm

Partly right about tectomics but you need to realise what forces drive tectonic/volcanic activity…
Answer is solar activity like the Maunder Minimum we’re in right now. The clock is 1 minute to midnight in that respect! Better be VERY well setup food and energy wise for the next decade.

Boat Guy
Boat Guy
August 1, 2017 10:17 pm

Enviormental catastrophees have created drastic changes and gradual changes for milenea . To think mans pollutant industries have not had some effect on enviorment and climate is foolish . However to think that average people need to live in some destitute state of want while others jet about claiming to save the planet is equally if not more foolish . I think the Antarctic reasearch is telling real open minded people more than close minded people on the left extreme want us to know .

parsonanonemouse
parsonanonemouse
August 2, 2017 7:21 am

Expanding earth theory v. Traditional pangea theory. Lots of assumption presented as fact.

hardscrabble farmer
hardscrabble farmer
August 2, 2017 8:03 am

The damage we’ve done by damming rivers, building megalopolis-style urban centers, using nuclear power and then having the waste to contend with, industrial style farming and the attendant loss of soil/degradation of water quality/dependence on oil based fertilizers, weather manipulation via chemtrails (or whatever you prefer to call the sky blocking vapors left behind jets)- all of these are a thousand times worse than any incremental half degree temperature differences that theoretically occur due to CO2.

Let’s get real.

People who know that they are participating in something immoral or damaging to themselves and their civilization, that’s why they are disfiguring their bodies, poisoning themselves, fornicating and drugging the guilt away, mesmerized by the most trivial of distractions rather than facing their own culpability in the dismantling of their own culture.

This whole “man-made global climate change” racket offers them an opportunity to further evade responsibility and blame it on someone else. Plus it’s religious in nature because you must accept the premise on faith rather than on facts, so that makes it all that much easier to sell to a people who have this gaping hole left where their soul used to live.

Kick that can, one more time.

Anonymous
Anonymous
August 2, 2017 10:37 am

great article on coal, and it puts our time as industrial ants into perspective.
it will take mother earth millions of years to turn our waste into some other form of energy.

my 2 cents on climate change or global warming:
1. since they have changed the brand from global warming, to climate change, within the same time frame they continue to measure and gather facts, this clearly indicates some manipulation by those who fund these studies.

2. They use it as a tool, to keep 3rd world nations in check, and ensuring that they do not get too industrialized, so as to compete with the dominant western cultures.
(hey, you can’t burn all that coal, like we did 100 years ago. We have discovered that we know what is best for you, and being rich is not for you)

Dutchman
Dutchman
August 2, 2017 11:21 am

Climate change. I ask those folks: Well what IS the proper temperature / precipitation for my city? They can’t answer – cause there is no answer.

The Sahara desert wasn’t always a desert 10,000 years ago. I am here in Minneapolis, where it was covered with a mile of glacial ice – about 10,000 years ago. How did that ice melt? It got warmer.

It’s all bullshit.

Davebee
Davebee
August 2, 2017 12:49 pm

This Antarctic coal info is not entirely hot-off-the-press news. The 1912 Scott Antarctic expedition found coal deposits but owing to Scott’s tragic death on his return to base journey from the South Pole it would seem this information was neglected. (Amundsen beat him to the pole to add salt to his wounds not to mention the disappointment of the British Empire at this defeat)
In any case I doubt that the geologists at the time had the faintest clue as to plate tectonics so it would have been all academic I suppose.
Before we all go bonkers at the idea of floating an Antarctic coal company and getting filthy rich the entire joint is run by the UN so, bye bye you lot. No mineral exploitation allowed, EVER.

Bob
Bob
August 2, 2017 2:41 pm

Hardscrabble Farmer, thanks for your clear and helpful contrast between pollution (man-made) and climate change (not man-made). We should do our utmost to curtail pollution, and adapt as well as possible to changes in the Earth’s climate.

Persnickety
Persnickety
August 2, 2017 4:28 pm

Sooooo… what’s the point? Yes, climate was different 35 million years ago. And on a long enough timeline we’re all dead.

That, and $4.69 plus mandatory 15% “gratuity” plus $2.00 “living-wage adjustment” will get you a tall coffee at Starbucks.

rhs jr
rhs jr
August 3, 2017 11:30 pm

Climate is complicated by countless variables (Earth’s CO2 being to insignificant to even bother with); but the Sun which is responsible for probably 99%, runs almost like a clock and that clock is ringing (time for Ice not heat). Wake up Useless Idiots: The ZOG wants you ignorant, starved and frozen dead (ref the 4 Horsemen); you liberal dolts are making it oh so easy for them that the ZOG Minions are laughing their keisters off at you scientifically dumbed down and doomed Goy as they print money to build and stock their DUMBs and your FEMA Concentration Camps.

Anonymous
Anonymous
  rhs jr
August 3, 2017 11:39 pm

A rise in questionable claims of man made climate change seems to be correlated with a rise in questionable claims of anti-semitism.
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