气候变化领域集成服务门户(CCPortal): The quandary of detecting the signature of climate change in Antarctica

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DOI	10.1038/s41558-023-01791-5
	The quandary of detecting the signature of climate change in Antarctica
	Casado, Mathieu; Hebert, Raphael; Faranda, Davide; Landais, Amaelle
发表日期	2023
ISSN	1758-678X
EISSN	1758-6798
英文摘要	Global warming driven by human activities is expected to be accentuated in polar regions compared with the global average, an effect called polar amplification. Yet, for Antarctica, the amplitude of warming is still poorly constrained due to short weather observations and the large decadal climate variability. Using a compilation of 78 ice core records, we provide a high-resolution reconstruction of temperatures over the past 1,000 years for seven regions of Antarctica and direct evidence of Antarctic polar amplification at regional and continental scales. We also show that the amplitude of both natural and forced variability is not captured by the CMIP5 and six model ensemble members, which could be explained in part by the Southern Annular Mode. This shows that failing to consider the feedback loops causing polar amplification could lead to an underestimation of the magnitude of anthropogenic warming and its consequences in Antarctica. The effect of global warming on Antarctic temperatures is difficult to quantify, due to short weather observations and large internal variability. Here the authors use ice cores to identify polar amplification that results in warming in Antarctica larger than the internal variability.
英文关键词	WATER ISOTOPES; TEMPERATURE RECONSTRUCTIONS; SURFACE-TEMPERATURE; POLAR AMPLIFICATION; STABLE-ISOTOPES; SNOW; VARIABILITY; CIRCULATION; SENSITIVITY; STATION
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001060716200002
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282228
作者单位	Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); CEA; Universite Paris Saclay; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Ecole des Ponts ParisTech; Universite PSL; Ecole Normale Superieure (ENS); Universite Paris Cite
推荐引用方式 GB/T 7714	Casado, Mathieu,Hebert, Raphael,Faranda, Davide,et al. The quandary of detecting the signature of climate change in Antarctica[J],2023.
APA	Casado, Mathieu,Hebert, Raphael,Faranda, Davide,&Landais, Amaelle.(2023).The quandary of detecting the signature of climate change in Antarctica.Nature Climate Change.
MLA	Casado, Mathieu,et al."The quandary of detecting the signature of climate change in Antarctica".Nature Climate Change (2023).