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  Tipping points in the cryosphere

Winkelmann, R., Steinert, N. J., McKay, D. I. A., Brovkin, V., Kääb, A., & Notz, D. (2023). Tipping points in the cryosphere. In T. M. Lenton, D. I. Armstron McKay, S. Lorani, J. F. Abrams, S. J. Lade, J. F. Donges, et al. (Eds.), The Global Tipping Points: Report 2023 (pp. 56-77). Exeter: University of Exeter.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000F-625D-B Version Permalink: https://hdl.handle.net/21.11116/0000-000F-6260-6
Genre: Contribution to Collected Edition

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 Creators:
Winkelmann, Ricarda1, Author                 
Steinert, Norman J., Author
McKay, David I. Armstrong, Author
Brovkin, Victor, Author
Kääb, Andreas, Author
Notz, Dirk, Author
Aksenov, Yevgeny, Contributor
Arndt, Sandra, Contributor
Bathiany, Sebastian, Contributor
Burke, Eleanor, Contributor
Garbe, Julius, Contributor
Gasson, Ed, Contributor
Goelzer, Heiko, Contributor
Hugelius, Gustaf, Contributor
Klose, Ann Kristin, Contributor
Langebroek, Petra, Contributor
Marzeion, Ben, Contributor
Maussion, Fabien, Contributor
Nitzbon, Jan, Contributor
Robinson, Alex, Contributor
more..
Affiliations:
1external, Max Planck Institute of Geoanthropology, Max Planck Society, ou_3520819              

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 Abstract: Drastic changes in our planet’s frozen landscapes have occurred over recent decades, from Arctic sea ice decline and thawing of permafrost soils to polar amplification, the retreat of glaciers and ice loss from the ice sheets. In this chapter, we assess multiple lines of evidence for tipping points in the cryosphere – encompassing the ice sheets on Greenland and Antarctica, sea ice, mountain glaciers and permafrost – based on recent observations, palaeorecords, numerical modelling and theoretical understanding.
With about 1.2°C of global warming compared to pre-industrial levels, we are getting dangerously close to the temperature thresholds of some major tipping points for the ice sheets of Greenland and West Antarctica. Crossing these would lock in unavoidable long-term global sea level rise of up to 10 metres. There is evidence for localised and regional tipping points for glaciers and permafrost and, while evidence for global-scale tipping dynamics in sea ice, glaciers and permafrost is limited, their decline will continue with unabated global warming.
Because of the long response times of these systems, some impacts of crossing potential tipping points will unfold over centuries to millennia. However, with the current trajectory of greenhouse gas (GHG) emissions and subsequent anthropogenic climate change, such largely irreversible changes might already have been triggered. These will cause far-reaching impacts for ecosystems and humans alike, threatening the livelihoods of millions of people, and will become more severe the further global warming progresses.

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Language(s): eng - English
 Dates: 2023-12-06
 Publication Status: Published online
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: Win080
 Degree: -

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Title: The Global Tipping Points: Report 2023
Source Genre: Collected Edition
 Creator(s):
Lenton, Timothy M., Editor
Armstron McKay, David I., Editor
Lorani, Sina, Editor
Abrams, Jesse F., Editor
Lade, Steven J., Editor
Donges, Jonathan F., Editor
Buxton, Joshua E., Editor
Milkoreit, Manjana, Editor
Powell, Tom, Editor
Smith, Steven R., Editor
Zimm, Caroline, Editor
Bailey, Emma, Editor
Dyke, James G., Editor
Ghadiali, Ashish, Editor
Laybourn, Laurie, Editor
Affiliations:
-
Publ. Info: Exeter : University of Exeter
Pages: - Volume / Issue: Section 1 Sequence Number: Chapter 1.2 Start / End Page: 56 - 77 Identifier: URN: https://global-tipping-points.org/