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the claim

Carbon dioxide levels are currently higher than pre-industrial times.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that carbon dioxide levels are currently higher than pre-industrial times?

Yes. Multiple reference and peer-reviewed sources state that current atmospheric CO2 concentrations are roughly 50% above pre-industrial levels, with figures around 417-428 ppm versus 280 ppm. This directly supports the claim.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 6
Carbon dioxide
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Carbon dioxide. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Carbon_dioxide

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More for · 5
Was the cretaceous the last time atmospheric carbon dioxide was significantly higher than it is today?
2012
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Was the cretaceous the last time atmospheric carbon dioxide was significantly higher than it is today?. (2012). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/8904/was-the-cretaceous-the-last-time-atmospheric-carbon-dioxide-was-significantly-hi

Carbon dioxide in the atmosphere of Earth - Wikipedia
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Carbon dioxide in the atmosphere of Earth - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Carbon_dioxide_in_the_atmosphere_of_Earth

Enhanced biological carbon consumption in a high CO2 ocean.
2007
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Riebesell, U., Schulz, K. G., Bellerby, R. G. J., Botros, M., Fritsche, P., Meyerhöfer, M., Neill, C., Nondal, G., Oschlies, A., Wohlers, J., & Zöllner, E. (2007). Enhanced biological carbon consumption in a high CO2 ocean.. doi.org. https://doi.org/10.1038/nature06267

Negative emissions technologies: A complementary solution for climate change mitigation
2019
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Pires, J. C. (2019). Negative emissions technologies: A complementary solution for climate change mitigation. archive.org. https://archive.org/details/mccl_10.1016_j.scitotenv.2019.04.004

Introduction
2023
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Introduction. (2023). hal.science. https://doi.org/10.1175/2023BAMSStateoftheClimate_Intro.1

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