A 45 million year record of Arctic sea temperatures and ice melt

[Crick]

Who’s fking with the atmosphere?

You, personally.

 

[jc456]

You, personally.

Cause? Say it

 

[jc456]

Here’s some more information for cricket

Climate Science’s Myth-Buster

It’s time to be scientific about global warming, says climatologist Judith Curry.

www.city-journal.org

 

[CarlinAnnArbor]

A new study uses AI and machine learning to examine data from archaean lipid membranes providing surface temperature, CO2 levels and oxygen isotope content correlation over the past 45 million years.

ABSTRACT
Cenozoic evolution of the Antarctic ice sheets is thought to be driven primarily by long-term changes in radiative forcing, but the tectonic evolution of Antarctica may also have played a substantive role. While deep-sea foraminiferal oxygen isotope records provide a combined measure of global continental ice volume and ocean temperature, they do not provide direct insights into non-radiative influences on Antarctic Ice Sheet dynamics. Here we present an Antarctic compilation of Cenozoic upper-ocean temperature for the Ross Sea and offshore Wilkes Land, generated by membrane lipid distributions from archaea. We find trends of ocean temperature, atmospheric carbon dioxide and oxygen isotopes largely co-vary. However, this relationship is less clear for the late Oligocene, when high-latitude cooling occurred despite interpretation of oxygen isotopes suggesting global warming and ice-volume loss. We propose this retreat of the West Antarctic Ice Sheet occurred in response to a tectonically driven marine transgression, with warm surface waters precluding marine-based ice-sheet growth. Marine ice-sheet expansion occurred only when ocean temperatures further cooled during the Oligocene–Miocene transition, with cold orbital conditions and low atmospheric carbon dioxide. Our results support a threshold response to atmospheric carbon dioxide, below which Antarctica’s marine ice sheets grow, and above which ocean warming exacerbates their retreat. "

Climatic and tectonic drivers of late Oligocene Antarctic ice volume - Nature Geoscience (Sorry, but this is a Nature Geoscience paywall)

This study supports the earlier study finding a high likelihood that CO2 levels above 400 ppm are likely to completely eliminate the Antarctic ice shelves which will lead to massively increased glacial ice sheet loss and large rises in sea levels.

Praying for it. So sick of cold winters

 

[Crick]

Praying for it. So sick of cold winters

Hmm...

 

[ding]

Hmm...
View attachment 732114

The geologic record is littered with examples of warming and cooling trends that were not caused by orbital or CO2 forcing. Climate fluctuations are a hallmark of our bipolar glaciated world because of the temperature thresholds of the poles and the landmass distribution around them.

 

[Crick]

Hmm...
View attachment 732114

The US hasn't seen a cold winter for 50 years.

 

[Dagosa]

A new study uses AI and machine learning to examine data from archaean lipid membranes providing surface temperature, CO2 levels and oxygen isotope content correlation over the past 45 million years.

ABSTRACT
Cenozoic evolution of the Antarctic ice sheets is thought to be driven primarily by long-term changes in radiative forcing, but the tectonic evolution of Antarctica may also have played a substantive role. While deep-sea foraminiferal oxygen isotope records provide a combined measure of global continental ice volume and ocean temperature, they do not provide direct insights into non-radiative influences on Antarctic Ice Sheet dynamics. Here we present an Antarctic compilation of Cenozoic upper-ocean temperature for the Ross Sea and offshore Wilkes Land, generated by membrane lipid distributions from archaea. We find trends of ocean temperature, atmospheric carbon dioxide and oxygen isotopes largely co-vary. However, this relationship is less clear for the late Oligocene, when high-latitude cooling occurred despite interpretation of oxygen isotopes suggesting global warming and ice-volume loss. We propose this retreat of the West Antarctic Ice Sheet occurred in response to a tectonically driven marine transgression, with warm surface waters precluding marine-based ice-sheet growth. Marine ice-sheet expansion occurred only when ocean temperatures further cooled during the Oligocene–Miocene transition, with cold orbital conditions and low atmospheric carbon dioxide. Our results support a threshold response to atmospheric carbon dioxide, below which Antarctica’s marine ice sheets grow, and above which ocean warming exacerbates their retreat. "

Climatic and tectonic drivers of late Oligocene Antarctic ice volume - Nature Geoscience (Sorry, but this is a Nature Geoscience paywall)

This study supports the earlier study finding a high likelihood that CO2 levels above 400 ppm are likely to completely eliminate the Antarctic ice shelves which will lead to massively increased glacial ice sheet loss and large rises in sea levels.

It doesn’t matter what was going on for millions of years when man did not inhabit the earth. It obviously was too inhospitable for our species to survive…

 

[Dagosa]

This guy admits things aren't as bad as he/they originally predicted



New York Times science writer David Wallace-Wells brings us some new thinking on global warming — and it isn't all bad. He's been called an alarmist in the past for his warnings about the consequences of dumping carbon into the atmosphere. But in a new article, Wallace-Wells writes that the cost of solar and wind energy has fallen dramatically, and scientists now say the pace of global warming in coming decades will be slower than previously forecast.

There are you happy now? We concede it isn't as bad as we predicted it would be. But does that mean we should do nothing?

I would love to hear a sincere response. Don't just dig in and keep denying man made climate change is real.

“Slower” is relative. it’s still faster then at any other time man has been on earth. It’s no excuse to thinking that the cost in lives and debt to face climate related calamities isn’t get worse as fast as we thought. ITS STILL GETTING WORSE.

Its like the man’s wife saying, no problem officer, my husband doesn’t abuse me every day anymore, just five days a week.

 

[CrusaderFrank]

Cause? Say it

Cause you’re allowing China to emit CO2

 

[CrusaderFrank]

“Slower” is relative. it’s still faster then at any other time man has been on earth. It’s no excuse to thinking that the cost in lives and debt to face climate related calamities isn’t get worse as fast as we thought. ITS STILL GETTING WORSE.

Its like the man’s wife saying, no problem officer, my husband doesn’t abuse me every day anymore, just five days a week.

How much longer before the Arctic is ice free like it was supposed to be in 2005?

 

[Dagosa]

How much longer before the Arctic is ice free like it was supposed to be in 2005?

So you think what ? it’s still not getting warmer and nearer to a sudden irreversible change . Wow. Let’s just keep abusing the family…..less often.

Do you believe in evolution ?

 

[Dagosa]

Cause you’re allowing China to emit CO2

The Nieghbor abuses his family, so let’s all abuse our family.

 

[CrusaderFrank]

The Nieghbor abuses his family, so let’s all abuse our family.

The neighbor abuses twice as many spouses as anybody so we do his bidding and point a finger at the USA

 

[Dagosa]

The neighbor abuses twice as many spouses as anybody so we do his bidding and point a finger at the USA

You think you have a right to keep abusing your family ?
You think you have a right to lie about climate change just because China isn’t doing as well ?

 

[Dagosa]

Cause you’re allowing China to emit CO2

You are too. You’re buying their shit,all the time.

 

[CrusaderFrank]

You think you have a right to keep abusing your family ?
You think you have a right to lie about climate change just because China isn’t doing as well ?

Tell us again how Earth based hydrocarbons come from dead dinosaurs and an ecosystem that that thrives on seasonal differences of 60 degrees will completely collapse at a 61 degree difference

 

[Dagosa]

Tell us again how Earth based hydrocarbons come from dead dinosaurs and an ecosystem that that thrives on seasonal differences of 60 degrees will completely collapse at a 61 degree difference

Totally irrelevant. Man was not alive at that time. Why you keep bringing up a system millions of years ago in a climate man did not live in is beyond idiocy. Maybe, you have no idea when man first appeared.

 

[ding]

Totally irrelevant. Man was not alive at that time. Why you keep bringing up a system millions of years ago in a climate man did not live in is beyond idiocy. Maybe, you have no idea when man first appeared.

The sky isn’t falling, chicken little. Relax. Go burn some more fossil fuels.

 

[ding]

You think you have a right to keep abusing your family ?
You think you have a right to lie about climate change just because China isn’t doing as well ?

Your carbon footprint isn’t different than any one else’s. Which makes you a hypocritical drama queen. Keep crusading against fornication while you fuck everyone in the neighborhood.