气候变化领域集成服务门户(CCPortal): Brief communication: Impact of mesh resolution for MISMIP and MISMIP3d experiments using Elmer/Ice

CCPortal

DOI	10.5194/tc-10-307-2016
	Brief communication: Impact of mesh resolution for MISMIP and MISMIP3d experiments using Elmer/Ice
	Gagliardini O.; Brondex J.; Gillet-Chaulet F.; Tavard L.; Peyaud V.; Durand G.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
英文摘要	The dynamical contribution of marine ice sheets to sea level rise is largely controlled by grounding line (GL) dynamics. Two marine ice sheet model intercomparison exercises, namely MISMIP and MISMIP3d, have been proposed to the community to test and compare the ability of models to capture the GL dynamics. Both exercises are known to present a discontinuity of the friction at the GL, which is believed to increase the model sensitivity to mesh resolution. Here, using Elmer/Ice, the only Stokes model which completed both intercomparisons, the sensitivity to the mesh resolution is studied from an extended MISMIP experiment in which the friction continuously decreases over a transition distance and equals zero at the GL. Using this MISMIP-like setup, it is shown that the sensitivity to the mesh resolution is not improved for a vanishing friction at the GL. For the original MISMIP experiment, i.e. for a discontinuous friction at the GL, we further show that the results are moreover very sensitive to the way the friction is interpolated in the close vicinity of the GL. In the light of these new insights, and thanks to increased computing resources, new results for the MISMIP3d experiments obtained for higher resolutions than previously published are made available for future comparisons as the Supplement. © Author(s) 2016.
学科领域	discontinuity; friction; grounding line; ice sheet; numerical method; numerical model; resolution; sea level change; software
语种	英语
scopus关键词	discontinuity; friction; grounding line; ice sheet; numerical method; numerical model; resolution; sea level change; software
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/119708
作者单位	Univ. Grenoble Alpes, LGGE, Grenoble, 38041, France; CNRS, LGGE, Grenoble, 38041, France; Institut Universitaire de France, Paris, France
推荐引用方式 GB/T 7714	Gagliardini O.,Brondex J.,Gillet-Chaulet F.,et al. Brief communication: Impact of mesh resolution for MISMIP and MISMIP3d experiments using Elmer/Ice[J],2016,10(1).
APA	Gagliardini O.,Brondex J.,Gillet-Chaulet F.,Tavard L.,Peyaud V.,&Durand G..(2016).Brief communication: Impact of mesh resolution for MISMIP and MISMIP3d experiments using Elmer/Ice.Cryosphere,10(1).
MLA	Gagliardini O.,et al."Brief communication: Impact of mesh resolution for MISMIP and MISMIP3d experiments using Elmer/Ice".Cryosphere 10.1(2016).