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DOI	10.5194/tc-13-1423-2019
	Contributions of advection and melting processes to the decline in sea ice in the Pacific sector of the Arctic Ocean
	Bi H.; Yang Q.; Liang X.; Zhang L.; Wang Y.; Liang Y.; Huang H.
发表日期	2019
ISSN	19940416
EISSN	13
起始页码	1423
结束页码	1439
卷号	13 期号:5 页码:1423-1439
英文摘要	The Pacific sector of the Arctic Ocean (PA, hereafter) is a region sensitive to climate change. Given the alarming changes in sea ice cover during recent years, knowledge of sea ice loss with respect to ice advection and melting processes has become critical. With satellite-derived products from the National Snow and Ice Center (NSIDC), a 38-year record (1979-2016) of the loss in sea ice area in summer within the Pacific-Arctic (PA) sector due to the two processes is obtained. The average sea ice outflow from the PA to the Atlantic-Arctic (AA) Ocean during the summer season (June-September) reaches 0.173×106 km2 which corresponds to approximately 34% of the mean annual export (October to September). Over the investigated period, a positive trend of 0.004×106km2yr-1 is also observed for the outflow field in summer. The mean estimate of sea ice retreat within the PA associated with summer melting is 1.66×106km2, with a positive trend of 0.053×106km2yr-1. As a result, the increasing trends of ice retreat caused by outflow and melting together contribute to a stronger decrease in sea ice coverage within the PA (0.057×106km2yr-1) in summer. In percentage terms, the melting process accounts for 90.4% of the sea ice retreat in the PA in summer, whereas the remaining 9.6% is explained by the outflow process, on average. Moreover, our analysis suggests that the connections are relatively strong (R 0.63), moderate (R=-0.46), and weak (R=-0.24) between retreat of sea ice and the winds associated with the dipole anomaly (DA), North Atlantic Oscillation (NAO), and Arctic Oscillation (AO), respectively. The DA participates by impacting both the advection (R D 0:74) and melting (R D 0:55) processes, whereas the NAO affects the melting process (R D-0:46). © 2019 Author(s).
语种	英语
WOS研究方向	Physical Geography ; Geology
scopus关键词	advection; Arctic Oscillation; ice cover; ice retreat; melting; North Atlantic Oscillation; outflow; sea ice; Pacific Sector; Southern Ocean
来源期刊	The Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/97688
作者单位	Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; College of Earth and Planetary Science, University of Chinese Academy of Sciences, Beijing, China; Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing, China
推荐引用方式 GB/T 7714	Bi H.,Yang Q.,Liang X.,et al. Contributions of advection and melting processes to the decline in sea ice in the Pacific sector of the Arctic Ocean[J],2019,13(5):1423-1439.
APA	Bi H..,Yang Q..,Liang X..,Zhang L..,Wang Y..,...&Huang H..(2019).Contributions of advection and melting processes to the decline in sea ice in the Pacific sector of the Arctic Ocean.The Cryosphere,13(5),1423-1439.
MLA	Bi H.,et al."Contributions of advection and melting processes to the decline in sea ice in the Pacific sector of the Arctic Ocean".The Cryosphere 13.5(2019):1423-1439.