Cascading tipping points of Antarctica and the Southern Ocean.

Autor: Kubiszewski I; Institute for Global Prosperity, University College London, London, UK. ida.kub@gmail.com.; College of Business and Economics, University of Tasmania, Hobart, Australia. ida.kub@gmail.com., Adams VM; School of Geography, Planning, and Spatial Sciences, University of Tasmania, Hobart, Australia., Baird R; College of Arts, Law and Education, University of Tasmania, Hobart, Australia., Boothroyd A; School of Geography, Planning, and Spatial Sciences, University of Tasmania, Hobart, Australia., Costanza R; Institute for Global Prosperity, University College London, London, UK.; College of Business and Economics, University of Tasmania, Hobart, Australia., MacDonald DH; College of Business and Economics, University of Tasmania, Hobart, Australia., Finau G; College of Business and Economics, University of Tasmania, Hobart, Australia., Fulton EA; CSIRO Environment, Hobart, TAS, Australia.; Centre for Marine Socioecology, Hobart, TAS, Australia., King CK; Environmental Stewardship Program, Australian Antarctic Division, Kingston, TAS, Australia., King MA; School of Geography, Planning, and Spatial Sciences, University of Tasmania, Hobart, Australia.; Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, Australia., Lannuzel D; Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, Australia.; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia., Leane E; College of Arts, Law and Education, University of Tasmania, Hobart, Australia.; Centre for Marine Socioecology, Hobart, TAS, Australia., Melbourne-Thomas J; CSIRO Environment, Hobart, TAS, Australia.; Centre for Marine Socioecology, Hobart, TAS, Australia., Ooi CS; School of Social Sciences, University of Tasmania, Hobart, Australia., Raghavan M; College of Business and Economics, University of Tasmania, Hobart, Australia., Senigaglia V; Securing Antarctica's Environmental Future, School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia., Stoeckl N; College of Business and Economics, University of Tasmania, Hobart, Australia.; Centre for Marine Socioecology, Hobart, TAS, Australia., Tian J; College of Business and Economics, University of Tasmania, Hobart, Australia., Yamazaki S; College of Business and Economics, University of Tasmania, Hobart, Australia.
Jazyk: angličtina
Zdroj: Ambio [Ambio] 2024 Dec 10. Date of Electronic Publication: 2024 Dec 10.
DOI: 10.1007/s13280-024-02101-9
Abstrakt: Antarctica and the Southern Ocean are key elements in the physical and biological Earth system. Human-induced climate change, and other human activities in the region, are leading to several potential interacting tipping points with major and irreversible consequences. Here, we examine eight potential physical, biological, chemical, and social Antarctic tipping points. These include ice sheets, ocean acidification, ocean circulation, species redistribution, invasive species, permafrost melting, local pollution, and the Antarctic Treaty System. We discuss the nature of each potential tipping point, its control variables, thresholds, timescales, and impacts, and focus on the potential for cumulative and cascading effects as a result of their interactions. The analysis provides substantial evidence of the need for more concerted and rapid action to limit climate change and to minimise the impacts of local human activities to avoid these cascading tipping points.
(© 2024. The Author(s).)
Databáze: MEDLINE
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