| DOI: | 10.1175/JCLI-D-16-0121.1
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| Scopus记录号: | 2-s2.0-84977558349
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| 论文题名: | Observed concentration budgets of Arctic and Antarctic sea ice |
| 作者: | Holland P.R.; Kimura N.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2016
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| 卷: | 29, 期:14 | | 起始页码: | 5241
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| 结束页码: | 5249
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| 语种: | 英语
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| Scopus关键词: | Budget control
; Climate models
; Sea ice
; Antarctica
; Arctic
; Geographic location
; Model evaluation/performance
; Seasonal cycle
; Southern ocean
; Variability
; Ice
; climate modeling
; concentration (composition)
; drift (glacial deposit)
; ice cover
; sea ice
; seasonal variation
; Antarctica
; Arctic
; Southern Ocean
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| 英文摘要: | In recent decades, Antarctic sea ice has expanded slightly while Arctic sea ice has contracted dramatically. The anthropogenic contribution to these changes cannot be fully assessed unless climate models are able to reproduce them. Process-based evaluation is needed to provide a clear view of the capabilities and limitations of such models. In this study, ice concentration and drift derived from AMSR-E data during 2003-10 are combined to derive a climatology of the ice concentration budget at both poles. This enables an observational decomposition of the seasonal dynamic and thermodynamic changes in ice cover. In both hemispheres, the results show spring ice loss dominated by ice melting. In other seasons ice divergence maintains freezing in the inner pack while advection causes melting at the ice edge, as ice is transported beyond the region where it is thermodynamically sustainable. Mechanical redistribution provides an important sink of ice concentration in the central Arctic and around the Antarctic coastline. This insight builds upon existing understanding of the sea ice cycle gained from ice and climate models, and the datasets may provide a valuable tool in validating such models in the future. © 2016 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/50049
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | British Antarctic Survey, Cambridge, United Kingdom; Atmosphere and Ocean Research Institute, The University of Tokyo, Tokyo, Japan
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| Recommended Citation: | |
Holland P.R.,Kimura N.. Observed concentration budgets of Arctic and Antarctic sea ice[J]. Journal of Climate,2016-01-01,29(14)
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