Articles | Volume 20, issue 2
https://doi.org/10.5194/cp-20-297-2024
https://doi.org/10.5194/cp-20-297-2024
Research article
 | 
08 Feb 2024
Research article |  | 08 Feb 2024

Effective diffusivity of sulfuric acid in Antarctic ice cores

Tyler J. Fudge, Raphael Sauvage, Linh Vu, Benjamin H. Hills, Mirko Severi, and Edwin D. Waddington

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Short summary
We use the oldest Antarctic ice core to estimate the rate of diffusion of sulfuric acid. Sulfuric acid is a marker of past volcanic activity and is critical in developing ice core timescales. The rate of diffusion is uncertain and is important to know, both for selecting future ice core locations and interpreting ice core records. We find the effective diffusivity of sulfate is 10 times smaller than previously estimated, indicating that the sulfuric acid signals will persist for longer.