Articles | Volume 12, issue 4
Earth Syst. Dynam., 12, 1057–1060, 2021
https://doi.org/10.5194/esd-12-1057-2021

Special issue: ESD Ideas

Earth Syst. Dynam., 12, 1057–1060, 2021
https://doi.org/10.5194/esd-12-1057-2021

ESD Ideas 25 Oct 2021

ESD Ideas | 25 Oct 2021

ESD Ideas: A weak positive feedback between sea level and the planetary albedo

Ben Marzeion

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ETOPO1: 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis C. Amante and B. W. Eakins https://doi.org/10.7289/V5C8276M

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The oceans are typically darker than land surfaces. Expanding oceans through sea-level rise may thus lead to a darker planet Earth, reflecting less sunlight. The additionally absorbed sunlight may heat planet Earth, leading to further sea-level rise. Here, we provide a rough estimate of the strength of this feedback: it turns out to be very weak, but clearly positive, thereby destabilizing the Earth system.
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