气候变化领域集成服务门户(CCPortal): NeXtSIM: A new Lagrangian sea ice model

CCPortal

DOI	10.5194/tc-10-1055-2016
	NeXtSIM: A new Lagrangian sea ice model
	Rampal P.; Bouillon S.; Ólason E.; Morlighem M.
发表日期	2016
ISSN	19940416
卷号	10 期号:3
英文摘要	The Arctic sea ice cover has changed drastically over the last decades. Associated with these changes is a shift in dynamical regime seen by an increase of extreme fracturing events and an acceleration of sea ice drift. The highly non-linear dynamical response of sea ice to external forcing makes modelling these changes and the future evolution of Arctic sea ice a challenge for current models. It is, however, increasingly important that this challenge be better met, both because of the important role of sea ice in the climate system and because of the steady increase of industrial operations in the Arctic. In this paper we present a new dynamical/thermodynamical sea ice model called neXtSIM that is designed to address this challenge. neXtSIM is a continuous and fully Lagrangian model, whose momentum equation is discretised with the finite-element method. In this model, sea ice physics are driven by the combination of two core components: a model for sea ice dynamics built on a mechanical framework using an elasto-brittle rheology, and a model for sea ice thermodynamics providing damage healing for the mechanical framework. The evaluation of the model performance for the Arctic is presented for the period September 2007 to October 2008 and shows that observed multi-scale statistical properties of sea ice drift and deformation are well captured as well as the seasonal cycles of ice volume, area, and extent. These results show that neXtSIM is an appropriate tool for simulating sea ice over a wide range of spatial and temporal scales. © 2016 Author(s).
学科领域	deformation; finite element method; ice cover; ice drift; Lagrangian analysis; momentum; sea ice; seasonal variation; spatiotemporal analysis; thermodynamics; Arctic
语种	英语
scopus关键词	deformation; finite element method; ice cover; ice drift; Lagrangian analysis; momentum; sea ice; seasonal variation; spatiotemporal analysis; thermodynamics; Arctic
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119645
作者单位	Nansen Environmental and Remote Sensing Center, Bjerknes Centre for Climate Research, Bergen, Norway; Department of Earth System Science, University of California, Irvine, CA, United States
推荐引用方式 GB/T 7714	Rampal P.,Bouillon S.,Ólason E.,et al. NeXtSIM: A new Lagrangian sea ice model[J],2016,10(3).
APA	Rampal P.,Bouillon S.,Ólason E.,&Morlighem M..(2016).NeXtSIM: A new Lagrangian sea ice model.Cryosphere,10(3).
MLA	Rampal P.,et al."NeXtSIM: A new Lagrangian sea ice model".Cryosphere 10.3(2016).