A comparison of two Stokes ice sheet models applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MISMIP3d)

doi:10.5194/tc-11-179-2017

	A comparison of two Stokes ice sheet models applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MISMIP3d)
	Zhang, Tong 1,3,4,5; Price, Stephen 2; Ju, Lili 3,4; Leng, Wei 6; Brondex, Julien 7; Durand, Gael 7; Gagliardini, Olivier 7
刊名	CRYOSPHERE
	2017-01-25
卷号	11 期号:1 页码:179-190
ISSN号	1994-0416
DOI	10.5194/tc-11-179-2017
英文摘要	We present a comparison of the numerics and simulation results for two "full" Stokes ice sheet models, FELIX-S (Leng et al., 2012) and Elmer/Ice (Gagliardini et al., 2013). The models are applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MIS-MIP3d). For the diagnostic experiment (P75D) the two models give similar results (<2% difference with respect to along-flow velocities) when using identical geometries and computational meshes, which we interpret as an indication of inherent consistencies and similarities between the two models. For the standard (Stnd), P75S, and P75R prognostic experiments, we find that FELIX-S (Elmer/Ice) grounding lines are relatively more retreated (advanced), results that are consistent with minor differences observed in the diagnostic experiment results and that we show to be due to different choices in the implementation of basal boundary conditions in the two models. While we are not able to argue for the relative favorability of either implementation, we do show that these differences decrease with increasing horizontal (i.e., both along-and across-flow) grid resolution and that grounding-line positions for FELIX-S and Elmer/Ice converge to within the estimated truncation error for Elmer/Ice. Stokes model solutions are often treated as an accuracy metric in model intercomparison experiments, but computational cost may not always allow for the use of model resolution within the regime of asymptotic convergence. In this case, we propose that an alternative estimate for the uncertainty in the grounding-line position is the span of grounding-line positions predicted by multiple Stokes models.
资助项目	Scientific Discovery through Advanced Computing (SciDAC) program - US Department of Energy (DOE), Office of Science, Advanced Scientific Computing Research and Biological and Environmental Research ; National Basic Research Program (973) of China[2013CBA01804] ; National Basic Research Program (973) of China[CHINARE2016] ; US National Science Foundation[DMS-1215659] ; National 863 Project of China[2012AA01A309] ; National Center for Mathematics and Interdisciplinary Sciences of the Chinese Academy of Sciences ; Agence Nationale pour la Recherche (ANR) through the SUMER[Blanc SIMI 6-2012] ; Office of Science of the US Department of Energy[DE-AC02-05CH11231] ; Center for Global Sea-Level Change at New York University Abu Dhabi
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000395179400002
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/24714]
专题	中国科学院数学与系统科学研究院
通讯作者	Price, Stephen
作者单位	1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather LASW, Beijing, Peoples R China 2.Los Alamos Natl Lab, Fluid Dynam & Solid Mech Grp, Los Alamos, NM 87544 USA 3.Univ South Carolina, Dept Math, Columbia, SC 29208 USA 4.Univ South Carolina, Interdisciplinary Math Inst, Columbia, SC 29208 USA 5.Chinese Acad Sci, State Key Lab Cryospher Sci, Lanzhou, Peoples R China 6.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Beijing, Peoples R China 7.Univ Grenoble Alpes, CNRS, IRD, IGE, F-38000 Grenoble, France
推荐引用方式 GB/T 7714	Zhang, Tong,Price, Stephen,Ju, Lili,et al. A comparison of two Stokes ice sheet models applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MISMIP3d)[J]. CRYOSPHERE,2017,11(1):179-190.
APA	Zhang, Tong.,Price, Stephen.,Ju, Lili.,Leng, Wei.,Brondex, Julien.,...&Gagliardini, Olivier.(2017).A comparison of two Stokes ice sheet models applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MISMIP3d).CRYOSPHERE,11(1),179-190.
MLA	Zhang, Tong,et al."A comparison of two Stokes ice sheet models applied to the Marine Ice Sheet Model Intercomparison Project for plan view models (MISMIP3d)".CRYOSPHERE 11.1(2017):179-190.