Articles | Volume 17, issue 5
https://doi.org/10.5194/tc-17-1967-2023
https://doi.org/10.5194/tc-17-1967-2023
Research article
 | 
10 May 2023
Research article |  | 10 May 2023

A model of the weathering crust and microbial activity on an ice-sheet surface

Tilly Woods and Ian J. Hewitt

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Cited articles

Bagshaw, E. A., Tranter, M., Fountain, A. G., Welch, K., Basagic, H. J., and Lyons, W. B.: Do cryoconite holes have the potential to be significant sources of C, N, and P to downstream depauperate ecosystems of Taylor Valley, Antarctica?, Arct. Antarct. Alp. Res., 45, 440–454, https://doi.org/10.1657/1938-4246-45.4.440, 2013. a
Benning, L. G., Anesio, A. M., Lutz, S., and Tranter, M.: Biological impact on Greenland's albedo, Nat. Geosci., 7, 691, https://doi.org/10.1038/ngeo2260, 2014. a, b
Box, J. E., Fettweis, X., Stroeve, J. C., Tedesco, M., Hall, D. K., and Steffen, K.: Greenland ice sheet albedo feedback: thermodynamics and atmospheric drivers, The Cryosphere, 6, 821–839, https://doi.org/10.5194/tc-6-821-2012, 2012. a, b
Chevrollier, L.-A., Cook, J. M., Halbach, L., Jakobsen, H., Benning, L. G., Anesio, A. M., and Tranter, M.: Light absorption and albedo reduction by pigmented microalgae on snow and ice, J. Glaciol., 69, 333–341, https://doi.org/10.1017/jog.2022.64, 2022. a
Christner, B. C., Lavender, H. F., Davis, C. L., Oliver, E. E., Neuhaus, S. U., Myers, K. F., Hagedorn, B., Tulaczyk, S. M., Doran, P. T., and Stone, W. C.: Microbial processes in the weathering crust aquifer of a temperate glacier, The Cryosphere, 12, 3653–3669, https://doi.org/10.5194/tc-12-3653-2018, 2018. a, b, c, d, e
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Short summary
Solar radiation causes melting at and just below the surface of the Greenland ice sheet, forming a porous surface layer known as the weathering crust. The weathering crust is home to many microbes, and the growth of these microbes is linked to the melting of the weathering crust and vice versa. We use a mathematical model to investigate what controls the size and structure of the weathering crust, the number of microbes within it, and its sensitivity to climate change.
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