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DOI10.1029/2019MS001700
Evaluation of Implicit-Explicit Additive Runge-Kutta Integrators for the HOMME-NH Dynamical Core
Vogl C.J.; Steyer A.; Reynolds D.R.; Ullrich P.A.; Woodward C.S.
发表日期2019
ISSN19422466
起始页码4228
结束页码4244
卷号11期号:12
英文摘要The nonhydrostatic High-Order Method Modeling Environment (HOMME-NH) atmospheric dynamical core supports acoustic waves that propagate significantly faster than the advective wind speed, thus greatly limiting the time step size that can be used with standard explicit time integration methods. Resolving acoustic waves is unnecessary for accurate climate and weather prediction. This numerical stiffness is addressed herein by considering implicit-explicit additive Runge-Kutta (ARK IMEX) methods that can treat the acoustic waves in a stable manner without requiring implicit treatment of nonstiff modes. Various ARK IMEX methods are evaluated for their efficiency in producing accurate solutions, ability to take large time step sizes, and sensitivity to grid cell length ratio. Both the gravity wave test and baroclinic instability test from the 2012 Dynamical Core Model Intercomparison Project are used to recommend 5 of the 27 ARK IMEX methods tested for use in HOMME-NH. ©2019. The Authors.
英文关键词additive Runge-Kutta; dynamical core; E3SM; HOMME-NH; IMEX; nonhydrostatic
语种英语
scopus关键词Acoustic wave propagation; Acoustic waves; Additives; Numerical methods; Wind; Additive Runge-Kutta; Dynamical core; E3SM; HOMME-NH; IMEX; Non-hydrostatic; Runge Kutta methods; additive; baroclinic instability; gravity wave; hydrostatic pressure; instability; numerical model; prediction; stiffness; weather forecasting
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/156805
作者单位Center for Applied Scientific Computing, Lawrence Livermore National Laboratory, Livermore, CA, United States; Sandia National Laboratories, Albuquerque, NM, United States; Department of Mathematics, Southern Methodist University, Dallas, TX, United States; Department of Land, Air and Water Resources, University of California, Davis, CA, United States
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Vogl C.J.,Steyer A.,Reynolds D.R.,et al. Evaluation of Implicit-Explicit Additive Runge-Kutta Integrators for the HOMME-NH Dynamical Core[J],2019,11(12).
APA Vogl C.J.,Steyer A.,Reynolds D.R.,Ullrich P.A.,&Woodward C.S..(2019).Evaluation of Implicit-Explicit Additive Runge-Kutta Integrators for the HOMME-NH Dynamical Core.Journal of Advances in Modeling Earth Systems,11(12).
MLA Vogl C.J.,et al."Evaluation of Implicit-Explicit Additive Runge-Kutta Integrators for the HOMME-NH Dynamical Core".Journal of Advances in Modeling Earth Systems 11.12(2019).
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