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This is a very interesting read: https://www.cambridge.org/core/journals/journal-of-glaciology/article/co2-diffusion-in-polar-ice-observations-from-naturally-f
by zosima 3y ago
This is a very interesting read:
https://www.cambridge.org/core/journals/journal-of-glaciology/article/co2-diffusion-in-polar-ice-observations-from-naturally-formed-co2-spikes-in-the-siple-dome-antarctica-ice-core/8C8638D9EC90AEA53B90B3DE70E594C0 https://www.cambridge.org/core/journals/journal-of-glaciolog...
They have found some meltwater layers with unexpectedly large quantities of CO2 > 750ppm.
But they also show that there is unexpected heavy diffusion around the meltwater layers. And they argue very compellingly, that the ice core CO2 records have been smoothed through natural diffusion.
Why is this information not given when showing this graph?
- MichaelZuo 3y ago>750 ppm CO2 is incredible, if that's true it's no wonder that interglacial maximums could have been 5 degrees warmer than present day. What's the causal explanation behind that much CO2 though? Super-volcano eruptions?
- zosima 3y agoThey explain in the paper. It's very likely an artifact. But from the layers around it, it becomes clear that through the years these high CO2 bubbles leak CO2 to nearby layers. And so CO2 highs are diminished in the ice core record and CO2 lows have been raised.
- MichaelZuo 3y agoBut in the case it's not an artifact?