DOI: 10.1002/2015GL065462
论文题名: Sea ice convergence along the Arctic coasts of Greenland and the Canadian Arctic Archipelago: Variability and extremes (1992-2014)
作者: Kwok R.
刊名: Geophysical Research Letters
ISSN: 0094-9493
EISSN: 1944-9224
出版年: 2015
卷: 42, 期: 18 起始页码: 7598
结束页码: 7605
语种: 英语
英文关键词: Arctic sea ice
; ice convergence
; ice thickness distribution
; melt ponds
Scopus关键词: Sea ice
; Thickness control
; Arctic sea ice
; Canadian Arctic Archipelago
; Circulation patterns
; Ice convergences
; Ice dynamics
; Ice thickness
; Melt ponds
; Thickness distributions
; Ice
; convergence
; ice cover
; ice drift
; ice thickness
; melting
; sea ice
; volume change
; Arctic
; Arctic Ocean
; Canada
; Canadian Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: After the summer of 2013, a convergence-induced tail in the thickness distribution of the ice cover is found along the Arctic coasts of Greenland and Canadian Arctic Archipelago. Prompted by this, a normalized ice convergence index (ICI) is introduced to examine the variability and extremes in convergence in a 23 year record (1992-2014) of monthly ice drift. Large-scale composites of circulation patterns, characteristic of regional convergence and divergence, are examined. Indeed, the ICI shows the June 2013 convergence event to be an extreme (i.e., ICI > 2). Furthermore, there is a cluster of 9 months over a 17 month period with positive ICIs (i.e., >1) following the record summer minimum ice extent (SMIE) in 2012; the imprint of ice dynamics from this cluster of positive ICIs likely contributed to higher SMIEs in 2013 and 2014. The impact of convergence on SMIE is discussed, and the increase in Arctic ice volume in 2013 is underscored. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945232059&doi=10.1002%2f2015GL065462&partnerID=40&md5=ab1e5a767eabf6c42556557ba29a9d85
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9108
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Kwok R.. Sea ice convergence along the Arctic coasts of Greenland and the Canadian Arctic Archipelago: Variability and extremes (1992-2014)[J]. Geophysical Research Letters,2015-01-01,42(18).