气候变化领域集成服务门户(CCPortal): MPAS-Ocean Simulation Quality for Variable-Resolution North American Coastal Meshes

CCPortal

DOI	10.1029/2019MS001848
	MPAS-Ocean Simulation Quality for Variable-Resolution North American Coastal Meshes
	Hoch K.E.; Petersen M.R.; Brus S.R.; Engwirda D.; Roberts A.F.; Rosa K.L.; Wolfram P.J.
发表日期	2020
ISSN	19422466
卷号	12 期号:3
英文摘要	Climate model components utilizing unstructured meshes enable variable resolution, regionally enhanced simulations within global domains. Here we investigate the relationship between mesh quality and simulation statistics using the JIGSAW unstructured meshing library and the Model for Prediction Across Scales-Ocean (MPAS-Ocean) with a focus on Gulf Stream dynamics. In the base configuration, the refined region employs 8 km cells that extend 400 km from the coast of North America. This coastal-refined region is embedded within a low-resolution global domain, with cell size varying latitudinally between 30 and 60 km. The resolution transition region between the refined region and background mesh is 600 km wide. Three sensitivity tests are conducted: (a) The quality of meshes is intentionally degraded so that horizontal cells are progressively more distorted; (b) the transition region from high to low resolution is steepened; and (c) resolution of the coastal refinement region is varied from 30 to 8 km. Overall, the ocean simulations are shown to be robust to mesh resolution and quality alterations. Meshes that are substantially degraded still produce realistic currents, with Southern Ocean transports within 0.4% and Gulf Stream transports within 12% of high-quality mesh results. The narrowest transition case of 100 km did not produce any spurious effects. Refined regions with high-resolution produce eddy kinetic energy and sea surface height variability that are similar to the high-resolution reference simulation. These results provide heuristics for the design criteria of variable-resolution climate model domains. ©2020. The Authors.
英文关键词	Gulf Stream; mesh; mesh quality; MPAS-Ocean; ocean modeling; variable resolution
语种	英语
scopus关键词	Kinetic energy; Kinetics; Mesh generation; Ocean currents; Surface waters; Eddy kinetic energy; Model components; Sea surface height; Sensitivity tests; Simulation quality; Transition regions; Unstructured meshes; Variable resolution; Climate models; climate modeling; coastal zone; eddy covariance; heuristics; kinetic energy; sea surface height; simulation; Atlantic Ocean; Gulf Stream; North America; Southern 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/156742
作者单位	Computational Physics and Methods (CCS-2), Los Alamos National Laboratory, Los Alamos, NM, United States; Fluid Dynamics and Solid Mechanics (T-3), Los Alamos National Laboratory, Los Alamos, NM, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; Center for Climate Systems Research, Columbia University, New York, NY, United States; Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, United States
推荐引用方式 GB/T 7714	Hoch K.E.,Petersen M.R.,Brus S.R.,et al. MPAS-Ocean Simulation Quality for Variable-Resolution North American Coastal Meshes[J],2020,12(3).
APA	Hoch K.E..,Petersen M.R..,Brus S.R..,Engwirda D..,Roberts A.F..,...&Wolfram P.J..(2020).MPAS-Ocean Simulation Quality for Variable-Resolution North American Coastal Meshes.Journal of Advances in Modeling Earth Systems,12(3).
MLA	Hoch K.E.,et al."MPAS-Ocean Simulation Quality for Variable-Resolution North American Coastal Meshes".Journal of Advances in Modeling Earth Systems 12.3(2020).