• @[email protected]
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      fedilink
      30
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      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
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        fedilink
        241 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
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        41 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…