气候变化领域集成服务门户(CCPortal): The stepwise decrease of 4+year ice extent and its linked survivability since around 2007

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DOI	10.1017/jog.2024.33
	The stepwise decrease of 4+year ice extent and its linked survivability since around 2007
	Shan, Qi; Fan, Ke; Liu, Jiping
发表日期	2024
ISSN	0022-1430
EISSN	1727-5652
英文摘要	Recent studies have reported a shift in the Arctic sea ice to a younger state after around 2007. This study reveals that this shift can be primarily attributed to a stepwise-type reduction in the extent of 4 years or older (4+ year) ice and its linked survivability. After this shift, the fraction of 4+ year ice extent relative to the total ice changed from 30.5 to 10.0%. Sea-ice survivability can serve as a key indicator of sea-ice persistence in response to other factors. We demonstrate that the decrease of 4+ year ice is controlled by the decrease of its linked survivability in a non-linear manner, signifying small alterations in the survivability can result in relatively large changes in the extent of 4+ year ice. The decrease in survivability is affected by both winter and summer processes. Summer melting contributed the most, while the contribution of the export through Fram Strait was minor. However, the significant rise in residual loss during the growth season suggests that other winter processes may also have played an important role.
英文关键词	climate change; ice and climate; sea ice
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001229053700001
来源期刊	JOURNAL OF GLACIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293196
作者单位	Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Sun Yat Sen University; Southern Marine Science & Engineering Guangdong Laboratory; Southern Marine Science & Engineering Guangdong Laboratory (Zhuhai); Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Shan, Qi,Fan, Ke,Liu, Jiping. The stepwise decrease of 4+year ice extent and its linked survivability since around 2007[J],2024.
APA	Shan, Qi,Fan, Ke,&Liu, Jiping.(2024).The stepwise decrease of 4+year ice extent and its linked survivability since around 2007.JOURNAL OF GLACIOLOGY.
MLA	Shan, Qi,et al."The stepwise decrease of 4+year ice extent and its linked survivability since around 2007".JOURNAL OF GLACIOLOGY (2024).