• morsebipbip@lemm.ee
    3·
    1 year ago

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

      • heeplr@feddit.de
        2·
        1 year ago

        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
          2·
          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
          2·
          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…