Ice Age Cycles Revealed from Antarctic Ice Cores(Analysis of Antarctica Ice Sheet )

This episode introduces the ice age cycle found in Antarctic ice.

00:11 Introduction
02:03 Since when did ice form in Antarctica?
05:02 The curtain rises on Antarctic ice core research
10:54 Finding the key to climate change at the Vostok station
13:21 Dusty Ice age

#antarctica #iceage #greenland

[pierremauboussin]

Petitio principi: the graph shows CO2 increases lag temperature changes, the reverse of what should be seen if CO2 is driving temperature change.

[trojanthedog]

200 ppm is scary close to the 150 ppm of plant death. Let's hear it for co2 pollution!👍

[DingBatSplat]

So what came first? Did the temp increase and then the CO2 increased or was it the other way round and can the sequence be proven? Or, was there geological activity, volcanoes/CO2 released from oceans/etc, that had significant influence?

[RalphEllis]

Interglacial warming was caused by 10, 000 years of dust on the ice sheets.
The dust was caused by a lack of CO2, which caused CO2 deserts - mostly in the Gobi region.
The dust covered (ie: low albedo) ice sheets easily melted.

See paper ‘ModuIation of lce Ages by Dust and AIbedo’.

R

[sextoyrepairman]

So what was the percentage of c02 back then cuz the percentage now is around 0.00002 percent

[eliinthewolverinestate]

And are these ice cores coming from areas of blue ice in Antarctica? Where the ice has pressed bubbles and impurities out?

[serdobsky_]

Впервые вижу канал на подобную тематику.

[eliinthewolverinestate]

The ice cores do not show CO2 lag, because the increased CO2 cooled things. Not lag but driver of the cooling. Satellite data have recently revealed that between 2002 and 2019, the mesosphere and lower thermosphere cooled by 3.1 degrees F (1.7 degrees C ). Mlynczak estimates that the doubling of CO2 levels thought likely by later this century will cause a cooling in these zones of around 13.5 degrees F (7.5 degrees C), which is between two and three times faster than the average warming expected at ground level.

[busterhyman]

Those vocal falling sentence endings are extremely irritating. Hopefully a cheap AI affectation. Had to click away to find the same data more comfortably presented in any number of similar sites. Still a sub, albeit disgruntled. ( south Florida )

[keepmoving]

Great presentation! I enjoy your accent

[karlostj]

Except the CO2 density graph shows a radically strong correlation between CO2 levels and Temperature when CO2 levels are less than 250ppm, and a radically weak correlation when CO2 levels are between 250 and 300 ppm - where Temperature skyrockets. This suggests that CO2 levels are not tightly bound to Temperature, which means something else is responsible.

[niklar]

GET IT CORRECT!
The polar ice caps are formed by an Ice Age, that commenced some 30-40 million years ago.
The variations in the ice records are the GLACIAL periods, or ages.
.

[comfortablynumb]

Question: if Noah's flood happened shouldn't there be evidence in the ice core samples? Is there evidence of floods? Does the ice trap evidence of meteors hitting the earth?

[sjwarialaw]

So, CO2 rises after a temperature rise. Not the other way around... which is quite obvious as its an extremely low potency greenhouse gas and its atmospheric concentration is mostly irrelevant.

Also, lower temperatures mean a more desertic planet, both cold deserts and warm deserts, so more dust particles in the atmosphere, hence why ice ages are more dusty.

[loisraymcinnis]

The Yukon has mountains as well; In my book they are both the same place in the north pole area and are really the ice walls area beyond the poles.

[AwakenedOne-qu]

When I was in Jr high, my geology teacher told us that we were thousands of years overdue for an ice age, thank God for global warming

[stevespears-ss]

I thought the Allan Hills Ice Core revealed 2.7 million years of carbon data.
Is this mistaken?

[timkbirchico]

ok, like a beer commercial or the voice over in Teken.

[stephenhoward]

Sceptical on time-lines. Nothing can confirm these.

[NWLibertarian]

CO2 concentration changes lag climate by 800 years. 800 years just happens to be how long the global ocean current takes to complete one cycle.

CO2 reacts to climate, not a driver of climate. There are dozens or hundreds of factors that effect climate, most we don't understand or even know about. CO2 is minor and it's small effect is almost completely expended.