This thought experiment tests climate similarity of a geothermal Earth-like planet, suggesting intriguing implications.
This short technical note presents a thought experiment to test the Dew-Point Anchor Hypothesis. It demonstrates that an Earth-like planet whose entire energy budget is supplied by surface geothermal flux (with identical total flux and latitudinal distribution to modern Earth) would possess an essentially identical climate to our Sunlit Earth.
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Philip Mulholland (2026) studied this question.
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