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Positive Weathering Feedback Compensates Carbonates at Shallow Ocean Depths

Published online by Cambridge University Press:  16 October 2024

Hakim Kaustubh Open the ORCID record for Hakim Kaustubh [Opens in a new window]
Hakim Kaustubh*
Affiliation:
KU Leuven, Institute of Astronomy, Celestijnenlaan 200D, 3001 Leuven, Belgium Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, Belgium
*
email: kaustubh.hakim@kuleuven.be
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Abstract

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Continental silicate weathering and seafloor carbonate precipitation are key steps in the carbonate-silicate cycle to draw down CO2. Contrary to the classic understanding of negative feedback, silicate weathering can exhibit positive feedback at high temperatures. Taking into account this positive feedback, the compensation depth (CCD) in exoplanet oceans becomes shallower, implying a potential instability in the carbonate-silicate cycle at high temperatures.

Keywords

Carbon CycleCarbonate Compensation DepthPositive Weathering Feedback

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S382: Complex Planetary Systems II: Latest Methods for an Interdisciplinary Approach , December 2022 , pp. 123 - 125
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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