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DOI	10.5194/tc-11-2829-2017
	Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6
	Docquier D.; Massonnet F.; Barthélemy A.; Tandon N.F.; Lecomte O.; Fichefet T.
发表日期	2017
ISSN	19940416
卷号	11 期号:6
英文摘要	Sea ice cover and thickness have substantially decreased in the Arctic Ocean since the beginning of the satellite era. As a result, sea ice strength has been reduced, allowing more deformation and fracturing and leading to increased sea ice drift speed. We use the version 3.6 of the global ocean-sea ice NEMO-LIM model (Nucleus for European Modelling of the Ocean coupled to the Louvain-la- Neuve sea Ice Model), satellite, buoy and submarine observations, as well as reanalysis data over the period from 1979 to 2013 to study these relationships. Overall, the model agrees well with observations in terms of sea ice extent, concentration and thickness. The seasonal cycle of sea ice drift speed is reasonably well reproduced by the model. NEMOLIM3.6 is able to capture the relationships between the seasonal cycles of sea ice drift speed, concentration and thickness, with higher drift speed for both lower concentration and lower thickness, in agreement with observations. Model experiments are carried out to test the sensitivity of Arctic sea ice drift speed, thickness and concentration to changes in sea ice strength parameter P∗. These show that higher values of P∗ generally lead to lower sea ice deformation and lower sea ice thickness, and that no single value of P∗ is the best option for reproducing the observed drift speed and thickness. The methodology proposed in this analysis provides a benchmark for a further model intercomparison related to the relationships between sea ice drift speed and strength, which is especially relevant in the context of the upcoming Coupled Model Intercomparison Project 6 (CMIP6). © Author(s) 2017.
学科领域	buoy system; CMIP; experimental study; global ocean; ice drift; ice thickness; methodology; model; sea ice; seasonal variation; strength; Arctic Ocean
语种	英语
scopus关键词	buoy system; CMIP; experimental study; global ocean; ice drift; ice thickness; methodology; model; sea ice; seasonal variation; strength; Arctic Ocean
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/119295
作者单位	Georges LemaÎtre Centre for Earth and Climate Research (TECLIM), Earth and Life Institute (ELI), Université Catholique de Louvain (UCL), Louvain-la-Neuve, Belgium; Earth Sciences Department, Barcelona Supercomputing Centre - Centro Nacional de Supercomputación (BSC-CNS), Barcelona, Spain; Climate Research Division, Environment and Climate Change Canada (ECCC), Toronto, Canada
推荐引用方式 GB/T 7714	Docquier D.,Massonnet F.,Barthélemy A.,et al. Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6[J],2017,11(6).
APA	Docquier D.,Massonnet F.,Barthélemy A.,Tandon N.F.,Lecomte O.,&Fichefet T..(2017).Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6.Cryosphere,11(6).
MLA	Docquier D.,et al."Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6".Cryosphere 11.6(2017).