气候变化领域集成服务门户(CCPortal): Fast EVP Solutions in a High-Resolution Sea Ice Model

CCPortal

DOI	10.1029/2018MS001485
	Fast EVP Solutions in a High-Resolution Sea Ice Model
	Koldunov N.V.; Danilov S.; Sidorenko D.; Hutter N.; Losch M.; Goessling H.; Rakowsky N.; Scholz P.; Sein D.; Wang Q.; Jung T.
发表日期	2019
ISSN	19422466
起始页码	1269
结束页码	1284
卷号	11 期号:5
英文摘要	Sea ice dynamics determine the drift and deformation of sea ice. Nonlinear physics, usually expressed in a viscous-plastic rheology, makes the sea ice momentum equations notoriously difficult to solve. At increasing sea ice model resolution the nonlinearities become stronger as linear kinematic features (leads) appear in the solutions. Even the standard elastic-viscous-plastic (EVP) solver for sea ice dynamics, which was introduced for computational efficiency, becomes computationally very expensive, when accurate solutions are required, because the numerical stability requires very short, and hence more, subcycling time steps at high resolution. Simple modifications to the EVP solver have been shown to remove the influence of the number of subcycles on the numerical stability. At low resolution appropriate solutions can be obtained with only partial convergence based on a significantly reduced number of subcycles as long as the numerical procedure is kept stable. This previous result is extended to high resolution where linear kinematic features start to appear. The computational cost can be strongly reduced in Arctic Ocean simulations with a grid spacing of 4.5 km by using modified and adaptive EVP versions because fewer subcycles are required to simulate sea ice fields with the same characteristics as with the standard EVP. ©2019. The Authors.
英文关键词	Arctic Ocean; elastic-viscous-plastic; FESOM; ice rheology; ocean modeling; sea ice dynamics
语种	英语
scopus关键词	Computational efficiency; Dynamics; Elasticity; Kinematics; Nonlinear equations; Arctic ocean; FESOM; Ice rheology; Ocean model; Sea ice dynamics; Sea ice; elasticity; modeling; momentum; nonlinearity; rheology; sea ice; viscoplasticity; Arctic Ocean
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156918
作者单位	MARUM-Center for Marine Environmental Sciences, Bremen, Germany; Alfred-Wegener-Institut, Helmholtz Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany; Department of Mathematics and Logistics, Jacobs University, Bremen, Germany; A. M. Obukhov Institute of Atmospheric Physics, RAS, Moscow, Russian Federation; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, Russian Federation; Institute of Environmental Physics, University of Bremen, Bremen, Germany
推荐引用方式 GB/T 7714	Koldunov N.V.,Danilov S.,Sidorenko D.,et al. Fast EVP Solutions in a High-Resolution Sea Ice Model[J],2019,11(5).
APA	Koldunov N.V..,Danilov S..,Sidorenko D..,Hutter N..,Losch M..,...&Jung T..(2019).Fast EVP Solutions in a High-Resolution Sea Ice Model.Journal of Advances in Modeling Earth Systems,11(5).
MLA	Koldunov N.V.,et al."Fast EVP Solutions in a High-Resolution Sea Ice Model".Journal of Advances in Modeling Earth Systems 11.5(2019).