this post was submitted on 18 Jul 2023
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[–] morsebipbip@lemm.ee 45 points 1 year ago* (last edited 1 year ago) (2 children)

TBF you can also pretty know the temperature from thousands of years ago somehow accurately by analysing ice from the polar caps

[–] atzanteol@sh.itjust.works 2 points 1 year ago

Yeah but the original toot is only taking about measured temps, not proxy temps.

[–] sadreality@kbin.social -3 points 1 year ago (1 children)

they have daily readings from cores?

[–] heeplr@feddit.de 30 points 1 year ago* (last edited 1 year ago) (2 children)

Yearly. They look at slices generated by compressed layers of snowfall. Thick layer = cold year. They look at more stuff but that's roughly how it works.

edit: not sure why you're downvoted. It's a good question.

[–] Gormadt@lemmy.blahaj.zone 24 points 1 year ago

Also the composition of captured gasses dissolved in the ice help us see what the atmosphere was like back then

It's a really cool field to look into NGL

[–] Siegfried@lemmy.world 4 points 1 year ago

not sure why you're downvoted. It's a good question.

The herd acts in mysterious ways... one would have thought we left those practices in the R-site...