Dramatic thinning of Alaskan river ice and its climatic controls

doi:10.1016/j.accre.2022.08.001

	Dramatic thinning of Alaskan river ice and its climatic controls
	Yang, Rui-Min1,2,3 ; Zhang, Tingjun 1
	2022-10-01
发表期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
卷号	13 期号:5 页码:623-631
摘要	River ice thickness (RIT) directly influences human activities, such as rural transportation and subsistence activities, in addition to ecosystem and hydrology processes in the Arctic. Knowledge of RIT response to the rapid Arctic warming is very limited or essentially lacking. The scientific objective of this study is to investigate changes and variations in RIT and their response to rapid Arctic warming. We used ground -based measurements of 45 river gauge sites from 1961 through 2015 spanning 12 river basins across Alaska. The results indicate that the long-term mean maximum river ice thickness (MRIT) ranged from 40.3 +/- 12.7 cm in the southeast to 187.3 +/- 31.9 cm in northwest Alaska. MRIT decreased dramatically from 1961 to 2015, on average, at a rate of -0.26 +/- 0.17 cm per year, and RIT declined significantly in all months from October through March, and more rapidly in winter than in autumn and spring. The impacts of air temperature and snowfall on MRIT change were analysed, and their relative influences were 74% and 26%, respectively. Specifically, an increase in air temperature was the primary factor contributing to MRIT decrease, while increasing snowfall, and snow on river ice enhanced MRIT decline. Seasonally, snowfall was the primary regulator for thickness change and higher air temperature resulted in RIT declining in autumn, while ice thickness decrease was mostly driven by warming in spring. However, neither air temperature nor snowfall is the primary control factor for declining RIT in winter, and further work needs to be done to detect the reason.
关键词	River ice Global warming Arctic rapid change Alaska Arctic
DOI	10.1016/j.accre.2022.08.001
收录类别	SCIE
ISSN	1674-9278
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:000874699900001
出版者	KEAI PUBLISHING LTD
原始文献类型	Article
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/33022
专题	农林经济管理学院
作者单位	1.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; 2.Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; 3.Lanzhou Univ Finance & Econ, Sch Agr & Forestry Econ & Management, Lanzhou 730020, Peoples R China
第一作者单位	兰州财经大学
推荐引用方式 GB/T 7714	Yang, Rui-Min,Zhang, Tingjun. Dramatic thinning of Alaskan river ice and its climatic controls[J]. ADVANCES IN CLIMATE CHANGE RESEARCH,2022,13(5):623-631.
APA	Yang, Rui-Min,&Zhang, Tingjun.(2022).Dramatic thinning of Alaskan river ice and its climatic controls.ADVANCES IN CLIMATE CHANGE RESEARCH,13(5),623-631.
MLA	Yang, Rui-Min,et al."Dramatic thinning of Alaskan river ice and its climatic controls".ADVANCES IN CLIMATE CHANGE RESEARCH 13.5(2022):623-631.