Unprecedented Warming My Ass

[Fort Fun Indiana]

A key claim by the climate community is that today's rate of warming - 1.5C in 100 years - is unprecedented. Never before has temperature risen so fast. I have yet to see them ever support their claim with data.

Here is definitive proof that that claim is fraudulent.

"...the Eemian was punctuated by many short-lived cold events, as shown by variations in electrical conductivity (a proxy for windblown dust, with more dust indicating colder, more arid conditions) and stable oxygen isotopes (a proxy for air temperature) of the ice were used by these workers infer the climatic conditions during the Eemian. The cold events seemed to last a few thousand years, and the magnitude of cooling was similar to the difference between glacial and interglacial conditions; a very dramatic contrast in climate. Furthermore, the shifts between these warm and cold periods seemed to be extremely rapid, possibly occurring over a few decades or less...."

Sudden climate changes in the recent geological record

Hmmmm.... examples of extreme natural warming and cooling trends within an interglacial period which occurred suddenly.

Opps... there goes that unprecedented warming theory.

Oops, no mention of 1.5 degC in 100 years.

Did you forget to copy paste that part?

 

[Fort Fun Indiana]

You are wasting your time. The cultists are true believers.

Instead, those that question the Climate cult should push for nuclear power, which would help relieve the world from being so dependent on the Middle East oil.

It is the only carbon free energy that is viable to meet the needs of society and is a win/win for both sides.

Nothing else makes sense. Particularly, it makes no sense to demand people drive EV's when they have to charge them with fossil fuel energy.

We know what caused that warming in the article, and we know what is causing the warming now.

 

[EMH]

We know what caused that warming in the article, and we know what is causing the warming now.

Outside of the surface of growing urban areas, there is NO WARMING...

NO WARMING in the ATMOSPHERE
NO WARMING in the OCEANS
NO ONGOING NET ICE MELT
NO BREAKOUT in CANE ACTIVITY
NO OCEAN RISE

 

[Fort Fun Indiana]

Outside of the surface of growing urban areas, there is NO WARMING...

I am not interested in your insanity. Sorry.

 

[ding]

Oops, no mention of 1.5 degC in 100 years.

Did you forget to copy paste that part?

1.5C in 100 years is nothing compared to 5C or 8C in several decades.

But, no, I didn't forget about it. It was the opening line of the OP.

A key claim by the climate community is that today's rate of warming - 1.5C in 100 years - is unprecedented.

 

[EMH]

I am not interested in your insanity. Sorry.

Can you tell us why one Earth polar circle has 9+ times the ice of the other?

 

[Fort Fun Indiana]

1.5C in 100 years is nothing compared to 5C or 8C in several decades.

But, no, I didn't forget about it. It was the opening line of the OP.

That's not what I read. What I read says the jury is still out on what you are claiming:

"Detailed analysis of terrestrial and marine records of climate change will, however, be necessary before we can say confidently on what timescale these events occurred; they almost certainly did not take longer than a few centuries."

But still interesting, at any rate.

Also terrifying. It makes the idea of climate tipping points brought about by AGW even more worrisome.

 

[ding]

That's not what I read. What I read says the jury is still out on what you are claiming:

"Detailed analysis of terrestrial and marine records of climate change will, however, be necessary before we can say confidently on what timescale these events occurred; they almost certainly did not take longer than a few centuries."

But still interesting, at any rate.

Also terrifying. It makes the idea of climate tipping points brought about by AGW even more worrisome.

Please do share the papers that say that because these peer reviewed scientific papers say otherwise. They say the ocean is responsible for abrupt temperature changes. And they back it up with PHYSICAL EVIDENCE.


https://www.science.org/doi/10.1126/science.aaf5529?adobe_mc=MCMID=24445298415631476812898182430771639861|MCORGID=242B6472541199F70A4C98A6%40AdobeOrg|TS=1723213472

Sudden climate changes in the recent geological record

https://www.science.org/content/article/crippled-atlantic-currents-triggered-ice-age-climate-change

Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes - Nature

Destabilisation of the Subpolar North Atlantic prior to the Little Ice Age - Nature Communications

Snapshots of mean ocean temperature over the last 700 000 years using noble gases in the EPICA Dome C ice core

https://www.sciencedirect.com/science/article/abs/pii/S0031018285800201

Deep Atlantic Circulation During the Last Glacial Maximum and Deglaciation​

https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/PA005i004p00469

Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes - Nature​

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010PA0020

It's such common knowledge that Dave Borlace did a video on it.

 

[Fort Fun Indiana]

Please do share the papers that say that

I don't have to do so. You already did. It's a quote from the Abstract of the paper you linked in the OP.

 

[ding]

I don't have to . You already did. It's a quite from the Abstract of the paper you linked in the OP.

Which the point of the paper was that the ocean is responsible for abrupt temperature changes.

There are no papers that argue the ocean isn't responsible for abrupt temperature changes.

 

[Fort Fun Indiana]

Which the point of the paper was that the ocean is responsible for abrupt temperature changes.

*That it can be and sometimes is

This is a science topic, please choose your words more carefully, so we don't have to take too much time correcting and clarifying your posts.

 

[ding]

*That it can be and sometimes is

This is a science topic, please choose your words more carefully, so we don't have to take too much time correcting and clarifying your posts.

Read the whole paper, dummy.

 

[Fort Fun Indiana]

Read the whole paper

Doesn't change a word I said. I am correcting your errors, you don't need to coach me.

And in fact this makes the manmade warming of the oceans a matter of even more concern.

 

[ding]

Doesn't change a word I said.

And in fact this makes the manmade warming of the oceans a matter of even more concern.

It actually does. The entire paper was showing the evidence for changing ocean currents causing abrupt temperature changes.

 

[ding]

I don't have to do so. You already did. It's a quote from the Abstract of the paper you linked in the OP.

The most recent ice age was characterized by rapid and hemispherically asynchronous climate oscillations, whose origin remains unresolved. Variations in oceanic meridional heat transport may contribute to these repeated climate changes, which were most pronounced during marine isotope stage 3, the glacial interval 25 thousand to 60 thousand years ago. We examined climate and ocean circulation proxies throughout this interval at high resolution in a deep North Atlantic sediment core, combining the kinematic tracer protactinium/thorium (Pa/Th) with the deep water-mass tracer, epibenthic δ13C. These indicators suggest reduced Atlantic overturning circulation during every cool northern stadial, with the greatest reductions during episodic Hudson Strait iceberg discharges, while sharp northern warming followed reinvigorated overturning. These results provide direct evidence for the ocean’s persistent, central role in abrupt glacial climate change.

https://www.science.org/doi/10.1126/science.aaf5529?adobe_mc=MCMID=24445298415631476812898182430771639861|MCORGID=242B6472541199F70A4C98A6%40AdobeOrg|TS=1723213472

 

[Fort Fun Indiana]

It actually does. The entire paper was showing the evidence for changing ocean currents causing abrupt temperature changes.

Exactly. As I said. It can and does sometimes cause rapid climate changes.

Not sure why you can't follow this.

 

[Fort Fun Indiana]

These results provide direct evidence for the ocean’s persistent, central role in abrupt glacial climate change.

So, not the only factor.

And this time too, no doubt, it plays a part. This worries scientists. Trust me, they're way ahead of you.

 

[ding]

Doesn't change a word I said. I am correcting your errors, you don't need to coach me.

And in fact this makes the manmade warming of the oceans a matter of even more concern.

The idea of Gulf Stream slowdowns as a mechanism in climate change is not merely theoretical. There is actually evidence from the study of ocean sediments that deepwater formation in the north Atlantic was diminished during the sudden cold Heinrich events and other colder phases of the last 130,000 years, including the Younger Dryas phase (e.g., Fairbanks, 1989; Kennett, 1990; Maslin, 199x). The same appears to have been true further back in time to 1.5 Myr ago (Raymo et al. 1998). The process also 'switched on' rapidly at times when climates suddenly warmed around the north Atlantic Basin, such as at the beginning of interstadials or the beginning of the present interglacial (Ramussen et al. 1997). Decreasing deep water formation occurred at times when the climate was cooling towards the end of an interstadial, and it diminished suddenly with the final cooling event that marked the end of the interstadial (Ramussen et al., 1997), and over a period of less than 300 years at the beginning of the Younger Dryas (e.g., Berger and Jansen, 1995).

Sudden climate changes in the recent geological record

 

[ding]

Exactly. As I said. It can and does sometimes cause rapid climate changes.

Not sure why you can't follow this.

The last ice age wasn't one long big chill. Dozens of times temperatures abruptly rose or fell, causing all manner of ecological change. Mysteriously, ice cores from Greenland and Antarctica show that these sudden shifts—which occurred every 1500 years or so—were out of sync in the two hemispheres: When it got cold in the north, it grew warm in the south, and vice versa. Now, scientists have implicated the culprit behind those seesaws—changes to a conveyor belt of ocean currents known as the Atlantic Meridional Overturning Circulation (AMOC).

These currents, which today drive the Gulf Stream, bring warm surface waters north and send cold, deeper waters south. But they weakened suddenly and drastically, nearly to the point of stopping, just before several periods of abrupt climate change, researchers report today in Science. In a matter of decades, temperatures plummeted in the north, as the currents brought less warmth in that direction. Meanwhile, the backlog of warm, southern waters allowed the Southern Hemisphere to heat up.

AMOC slowdowns have long been suspected as the cause of the climate swings during the last ice age, which lasted from 110,000 to 15,000 years ago, but never definitively shown. The new study "is the best demonstration that this indeed happened," says Jerry McManus, a paleo-oceanographer at Columbia University's Lamont-Doherty Earth Observatory, and a study author. "It is very convincing evidence," adds Andreas Schmittner, a climate scientist at Oregon State University, Corvallis. "We did not know that the circulation changed during these shorter intervals."

https://www.science.org/content/article/crippled-atlantic-currents-triggered-ice-age-climate-change

 

[ding]

So, not the only factor.

And this time too, no doubt, it plays a part. This worries scientists. Trust me, they're way ahead of you.

The Atlantic meridional overturning circulation is widely believed to affect climate. Changes in ocean circulation have been inferred from records of the deep water chemical composition derived from sedimentary nutrient proxies1, but their impact on climate is difficult to assess because such reconstructions provide insufficient constraints on the rate of overturning2. Here we report measurements of 231Pa/230Th, a kinematic proxy for the meridional overturning circulation, in a sediment core from the subtropical North Atlantic Ocean. We find that the meridional overturning was nearly, or completely, eliminated during the coldest deglacial interval in the North Atlantic region, beginning with the catastrophic iceberg discharge Heinrich event H1, 17,500 yr ago, and declined sharply but briefly into the Younger Dryas cold event, about 12,700 yr ago. Following these cold events, the 231Pa/230Th record indicates that rapid accelerations of the meridional overturning circulation were concurrent with the two strongest regional warming events during deglaciation. These results confirm the significance of variations in the rate of the Atlantic meridional overturning circulation for abrupt climate changes.

Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes - Nature

The Atlantic meridional overturning circulation is widely believed to affect climate. Changes in ocean circulation have been inferred from records of the deep water chemical composition derived from sedimentary nutrient proxies1, but their impact on climate is difficult to assess because such...

www.nature.com