气候变化领域集成服务门户(CCPortal): Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean

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DOI	10.1007/s00382-018-4348-3
	Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean–sea ice model study
	Kusahara K.; Williams G.D.; Massom R.; Reid P.; Hasumi H.
发表日期	2019
ISSN	0930-7575
起始页码	3791
结束页码	3807
卷号	52 期号:2020-07-08
英文摘要	Satellite-derived Antarctic sea ice extent has displayed a slight upward since 1979, but with strong temporal and regional variability—the drivers of which are poorly understood. Here, we conduct numerical experiments with a circum-Antarctic ocean–sea ice–ice shelf model driven by realistic atmospheric surface boundary conditions to examine the factors responsible for the temporal and spatial patterns in observed Antarctic sea ice variability. The model successfully reproduces observed seasonal and interannual variability in total sea ice extent and the temporal/spatial patterns of sea ice concentration and seasonality (days of advance and retreat and actual ice days) for 1979–2014. Sensitivity experiments are performed, in which the interannual variability in wind stress or thermodynamic surface forcing is ignored, to delineate their contributions to Antarctic sea ice fields. The results demonstrate that: (1) thermodynamic forcing plays a key role in driving interannual variability in sea ice extent and seasonality in most Antarctic sectors; (2) only in the Ross Sea the wind stress does become the main driver of sea ice extent variability; (3) thermodynamic forcing largely regulates interannual variability in the timing of sea ice advance, while wind stress largely controls the timing of the sea ice retreat; and (4) although both wind stress and thermodynamic forcing contribute to variability in total sea ice volume, the wind stress plays a dominant role in regulating sea ice volume variability in the near-coastal zone. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	An ocean–sea ice model; Antarctic sea ice variability; Thermodynamic forcing; Wind stress
语种	英语
scopus关键词	annual variation; boundary condition; ice retreat; ice shelf; sea ice; seasonality; spatiotemporal analysis; thermodynamics; wind stress; Antarctica
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146434
作者单位	Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3173-25, Showa-machi, Kanazawa-ku, Yokohama-city, Kanagawa 236-0001, Japan; Antarctic Climate and Ecosystems Research Centre, University of Tasmania, Hobart, TAS, Australia; Institute of Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Australian Antarctic Division, Kingston, TAS, Australia; Australian Bureau of Meteorology, Hobart, TAS, Australia; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa-shi, Chiba, Japan
推荐引用方式 GB/T 7714	Kusahara K.,Williams G.D.,Massom R.,等. Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean–sea ice model study[J],2019,52(2020-07-08).
APA	Kusahara K.,Williams G.D.,Massom R.,Reid P.,&Hasumi H..(2019).Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean–sea ice model study.Climate Dynamics,52(2020-07-08).
MLA	Kusahara K.,et al."Spatiotemporal dependence of Antarctic sea ice variability to dynamic and thermodynamic forcing: a coupled ocean–sea ice model study".Climate Dynamics 52.2020-07-08(2019).