气候变化领域集成服务门户(CCPortal): Reversibility of Greenland ice sheet mass loss under artificial carbon dioxide removal scenarios

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DOI	10.1088/1748-9326/ad2129
	Reversibility of Greenland ice sheet mass loss under artificial carbon dioxide removal scenarios
	Hoening, Dennis; Willeit, Matteo; Ganopolski, Andrey
发表日期	2024
ISSN	1748-9326
起始页码	19
结束页码	2
卷号	19 期号:2
英文摘要	With ongoing anthropogenic CO2 emissions, the Greenland ice sheet (GIS) approaches critical thresholds of inevitable, long-term mass loss. Future technologies might be able to efficiently remove CO2 from the atmosphere and thereby cool down our planet. We explore whether and to what extent a realization of this concept could lead to a regrowth of the GIS once it has partly melted. Using the fully coupled Earth system model of intermediate complexity CLIMBER-X, emission pulses between 0 and 4000 GtC are released into the atmosphere, and after 1 kyr, 2 kyr, and 5 kyr, the atmospheric CO2 concentration is reduced back to its pre-industrial value. We find that independent of a specific trajectory, once the southern part of the GIS has partly melted with a total mass loss of more than 0.4 m sea level equivalent, regrowth is inhibited. Uncertainties preclude determination of precise thresholds, but model results indicate that cumulative industrial-era emissions approaching 1000-1500 GtC and beyond increasingly risk irreversible mass loss of the GIS. Once this threshold is passed, artificial atmospheric carbon removal would need to be utilised within the next centuries at massive scale. Beyond that, artificial atmospheric carbon removal has limited abilities to avoid long-term mass loss of the GIS. In conclusion, keeping cumulative anthropogenic emissions below 1000-1500 GtC is the only safe way to avoid irreversible mass loss of the GIS.
英文关键词	Greenland ice sheet; sea level rise; climate change; tipping point; anthropogenic carbon emissions; Earth system; artificial carbon removal
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001157084400001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298607
作者单位	Potsdam Institut fur Klimafolgenforschung
推荐引用方式 GB/T 7714	Hoening, Dennis,Willeit, Matteo,Ganopolski, Andrey. Reversibility of Greenland ice sheet mass loss under artificial carbon dioxide removal scenarios[J],2024,19(2).
APA	Hoening, Dennis,Willeit, Matteo,&Ganopolski, Andrey.(2024).Reversibility of Greenland ice sheet mass loss under artificial carbon dioxide removal scenarios.ENVIRONMENTAL RESEARCH LETTERS,19(2).
MLA	Hoening, Dennis,et al."Reversibility of Greenland ice sheet mass loss under artificial carbon dioxide removal scenarios".ENVIRONMENTAL RESEARCH LETTERS 19.2(2024).