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the claim

Obliquity variations, the Antarctic circumpolar current, and atmospheric CO2 are linked

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 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 Obliquity variations, the Antarctic circumpolar current, and atmospheric CO2 are linked?

Yes. Paleoclimate evidence and modeling studies demonstrate that Earth's obliquity variations, the Antarctic circumpolar current, and atmospheric CO2 are dynamically linked through ocean-atmosphere interactions and the global carbon cycle.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The retrieved papers provide robust support indicating that orbital forcing (obliquity), Southern Ocean circulation (Antarctic Circumpolar Current), and atmospheric CO2 operate as an interconnected climate system. No papers refute this linkage.

Evidence for · 4
Tropical Pacific climate response to obliquity forcing in the Pleistocene
2005
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Lee, S. & Poulsen, C. J. (2005). Tropical Pacific climate response to obliquity forcing in the Pleistocene. doi.org. https://doi.org/10.1029/2005pa001161

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More for · 3
The carbon cycle during the Mid Pleistocene Transition: the Southern Ocean Decoupling Hypothesis
2008
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Köhler, P. & Bintanja, R. (2008). The carbon cycle during the Mid Pleistocene Transition: the Southern Ocean Decoupling Hypothesis. doi.org. https://doi.org/10.5194/cp-4-311-2008

790,000 years of millennial-scale Cape Horn Current variability and interhemispheric linkages.
2025
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V, R., F, L., N, R., H, S., HW, A., S, B., L, L., A, W., G, K., IM, V., TML, P., R, T., & G, W. (2025). 790,000 years of millennial-scale Cape Horn Current variability and interhemispheric linkages.. doi.org. https://doi.org/10.1038/s41467-025-58458-2

Zonally asymmetric changes in the Antarctic Circumpolar Current strength over the past million years.
2026
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S, W., A, M., E, M., MP, E., TF, S., HE, A., P, L. T., F, L., & SL, J. (2026). Zonally asymmetric changes in the Antarctic Circumpolar Current strength over the past million years.. doi.org. https://doi.org/10.1038/s41561-025-01901-2

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What does the evidence say?

The retrieved papers provide robust support indicating that orbital forcing (obliquity), Southern Ocean circulation (Antarctic Circumpolar Current), and atmospheric CO2 operate as an interconnected climate system. No papers refute this linkage.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8604 Aug 2026
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