DOI: 10.1175/JCLI-D-17-0067.1
Scopus记录号: 2-s2.0-85041674977
论文题名: Dynamic and thermodynamic impacts of the winter arctic oscillation on summer sea ice extent
作者: Park H.-S. ; Stewart A.L. ; Son J.-H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 4 起始页码: 1483
结束页码: 1497
语种: 英语
英文关键词: Arctic
; Arctic Oscillation
; Interannual variability
; Sea ice
Scopus关键词: Atmospheric radiation
; Heat flux
; Ocean currents
; Sea ice
; Thermodynamics
; Arctic
; Arctic Oscillation
; Arctic oscillations
; Ice albedo feedback
; Interannual variability
; Radiative forcings
; Surface heat fluxes
; Thermodynamics effects
; Ice
; annual variation
; anticyclone
; Arctic Oscillation
; atmospheric dynamics
; ice thickness
; summer
; thermodynamics
; thinning
; winter
; Arctic Ocean
; Pacific Ocean
英文摘要: Arctic summer sea ice extent exhibits substantial interannual variability, as is highlighted by the remarkable recovery in sea ice extent in 2013 following the record minimum in the summer of 2012. Here, the mechanism via which Arctic Oscillation (AO)-induced ice thickness changes impact summer sea ice is explored, using observations and reanalysis data. A positive AO weakens the basin-scale anticyclonic sea ice drift and decreases the winter ice thickness by 15 and 10 cm in the Eurasian and the Pacific sectors of the Arctic, respectively. Three reanalysis datasets show that the upward surface heat fluxes are reduced over wide areas of the Arctic, suppressing the ice growth during the positive AO winters. The winter dynamic and thermodynamic thinning preconditions the ice for enhanced radiative forcing via the ice-albedo feedback in late spring-summer, leading to an additional 10 cm of thinning over the Pacific sector of the Arctic. Because of these winter AO-induced dynamic and thermodynamics effects, the winter AO explains about 22% (r = -0.48) of the interannual variance of September sea ice extent from 1980 to 2015. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111671
Appears in Collections: 气候减缓与适应
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作者单位: Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States; Department of Atmospheric Sciences, Pusan National University, Busan, South Korea
Recommended Citation:
Park H.-S.,Stewart A.L.,Son J.-H.. Dynamic and thermodynamic impacts of the winter arctic oscillation on summer sea ice extent[J]. Journal of Climate,2018-01-01,31(4)