[neverdem]

Of course, we know that ice is an absolutely impermeable material. What hogwash.

You can argue with proxy data, but you can't say it is not frozen in place. What the author does do is undermine carbon dioxide as a driving force causing climate change. This data supports the idea that carbon dioxide is a lagging indicator of prior climate change.

[cogitator]

What the author does do is undermine carbon dioxide as a driving force causing climate change. This data supports the idea that carbon dioxide is a lagging indicator of prior climate change.

That's a ridiculous statement. Even reading the abstract indicates it's only about the factor which caused a change in the timing of glacial/interglacial periods. For that particular aspect of paleoclimate, CO2 is now shown not to be the causative factor. This paper has nothing else to do with CO2 as a climate change driver, which primarily means a determinant of global temperature and changes in global temperature. You'll note that they even say in the abstract: "These estimates are consistent with a close linkage between atmospheric CO2 concentration and global climate,"

How does that statement "undermine carbon dioxide as a driving factor causing climate change"?

Congratulations on provoking me to comment!

Didja read the last paragraph of the Science News summary:

"In extending the record of carbon dioxide measurements, the study also shows that today’s levels — now above 380 parts per million and rising higher each year — are unprecedented during the past 2 million years."

How comforting is that?

Back to hibernation.