DOI: 10.1175/JCLI-D-17-0427.1
Scopus记录号: 2-s2.0-85048171819
论文题名: Seasonal and regional manifestation of Arctic sea ice loss
作者: Onarheim I.H. ; Eldevik T. ; Smedsrud L.H. ; Stroeve J.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 12 起始页码: 4917
结束页码: 4932
语种: 英语
英文关键词: Arctic
; Climate change
; Sea ice
Scopus关键词: Climate change
; Arctic
; East-siberian seas
; Ice-free conditions
; Northern Hemispheres
; Possible futures
; Sea ice concentration
; Winter sea ices
; Winter variability
; Sea ice
; arctic environment
; climate change
; ice cover
; ice retreat
; sea ice
; seasonal variation
; spatial variation
; Arctic Ocean
; Arctic Ocean
; Baffin Bay [Arctic Ocean]
; Barents Sea
; Greenland Sea
; Kara Sea
; Norwegian Sea
; Pacific Ocean
; Sea of Okhotsk
英文摘要: The Arctic Ocean is currently on a fast track toward seasonally ice-free conditions. Although most attention has been on the accelerating summer sea ice decline, large changes are also occurring in winter. This study assesses past, present, and possible future change in regional Northern Hemisphere sea ice extent throughout the year by examining sea ice concentration based on observations back to 1950, including the satellite record since 1979. At present, summer sea ice variability and change dominate in the perennial ice-covered Beaufort, Chukchi, East Siberian, Laptev, and Kara Seas, with the East Siberian Sea explaining the largest fraction of September ice loss (22%). Winter variability and change occur in the seasonally ice-covered seas farther south: the Barents Sea, Sea of Okhotsk, Greenland Sea, and Baffin Bay, with the Barents Sea carrying the largest fraction of loss in March (27%). The distinct regions of summer and winter sea ice variability and loss have generally been consistent since 1950, but appear at present to be in transformation as a result of the rapid ice loss in all seasons. As regions become seasonally ice free, future ice loss will be dominated by winter. The Kara Sea appears as the first currently perennial ice-covered sea to become ice free in September. Remaining on currently observed trends, the Arctic shelf seas are estimated to become seasonally ice free in the 2020s, and the seasonally ice-covered seas farther south to become ice free year-round from the 2050s. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111504
Appears in Collections: 气候减缓与适应
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作者单位: Geophysical Institute, University of Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; University College London, London, United Kingdom; National Snow and Ice Data Center, Boulder, CO, United States
Recommended Citation:
Onarheim I.H.,Eldevik T.,Smedsrud L.H.,et al. Seasonal and regional manifestation of Arctic sea ice loss[J]. Journal of Climate,2018-01-01,31(12)