V tokratnem ARŠU se pogovarjamo o tem, kaj je permafrost, kako se spreminja zaradi podnebnih sprememb in kakšne posledice ima to na lokalni, regionalni in globalni ravni.

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Znanost

ARŠO

26. 1. 2023 – 10.15

Martin Ulaga

Lit Aršo

O ogljikovem ciklu, povratnih zankah in shranjevanju ogljika.

Povezave na dele oddaje:

Uvod - kaj je permafrost?

Ali permafrost predstavlja točko preloma?

Vloga permafrosta v ogljikovem ciklu - ogljik, ogljikov dioksid, metan.

Fosili v permafrostu.

Infrastruktura na permafrostu.

Kaj je še neznano.

Viri:

Biskaborn, B.K., Smith, S.L., Noetzli, J. et al. Permafrost is warming at a global scale. Nat Commun 10, 264 (2019). https://doi.org/10.1038/s41467-018-08240-4

Schuur, E. A., Abbott, B. W., Commane, R., Ernakovich, J., Euskirchen, E., Hugelius, G., ... & Turetsky, M. Permafrost and climate change: Carbon cycle feedbacks from the warming Arctic. Annual Review of Environment and Resources 47, 343-371 (2022). https://doi.org/10.1146/annurev-environ-012220-011847

Armstrong McKay, D. I., Staal, A., Abrams, J. F., Winkelmann, R., Sakschewski, B., Loriani, S., ... & Lenton, T. M. Exceeding 1.5 C global warming could trigger multiple climate tipping points. Science 377, 6611 (2022). https://doi.org/10.1126/science.abn7950

Turetsky, M. R., Abbott, B. W., Jones, M. C., Walter Anthony, K., Olefeldt, D., Schuur, E. A., ... & Sannel, A. B. K. Permafrost collapse is accelerating carbon release. Nature 569, 32-34 (2019). https://par.nsf.gov/servlets/purl/10133777

Froitzheim, N., Majka, J., & Zastrozhnov, D. Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave. Proceedings of the National Academy of Sciences 118, 32 (2021), https://doi.org/10.1073/pnas.2107632118.

Langer, M., von Deimling, T.S., Westermann, S. et al. Thawing permafrost poses environmental threat to thousands of sites with legacy industrial contamination. Nat Commun 14, 1721 (2023). https://doi.org/10.1038/s41467-023-37276-4

slika: Shuur in sod., Annu. Rev. Environ. Resour. 2022. 47:343–71 (CC 4.0)