Preprints
https://doi.org/10.5194/egusphere-2022-510
https://doi.org/10.5194/egusphere-2022-510
28 Jun 2022
 | 28 Jun 2022

Ocean Modeling with Adaptive REsolution (OMARE, version 1.0) – Refactoring NEMO model (version 4.0.1) with the parallel computing framework of JASMIN. Part 1: adaptive grid refinement in an idealized double-gyre case

Yan Zhang, Xuantong Wang, Yuhao Sun, Chenhui Ning, Shiming Xu, Hengbin An, Dehong Tang, Hong Guo, Hao Yang, Ye Pu, Bo Jiang, and Bin Wang

Abstract. High-resolution models have become widely available to study ocean’s small-scale processes. Although these models simulates more turbulent ocean dynamics and reduces uncertainties of parameterizations, they are not practical for long-term simulations, especially for climate studies. Besides scientific research, there are also growing needs from key applications for multi-resolution, flexible modeling capabilities. In this study we introduce the Ocean Modeling with Adaptive REsolution (OMARE), which is based on refactoring NEMO with a parallel computing framework of JASMIN. OMARE supports adaptive mesh refinement (AMR) for the simulation of the multi-scale ocean processes with improved computability. We construct an idealized, double-gyre test case, which simulates a western-boundary current system with seasonally changing atmospheric forcings. This paper (part 1) focuses on the ocean physics simulated by OMARE at two refinement scenarios: (1) 0.5°–0.1° with static refinement and the transition from laminar to turbulent, eddy rich ocean, and (2) short-term 0.1°–0.02° AMR experiments which focus on submesoscale processes. Specifically, for the first scenario, we show that the ocean kinematics on the refined, 0.1° region is sensitive to the choice of refinement region within the low-res., 0.5° basin. Furthermore, for the refinement to 0.02°, we adopt refinement criteria for AMR based on surface velocity and vorticity. Results show that temporally changing features at the ocean’s mesoscale, as well as submesoscale process and its seasonality, are well captured through AMR. Related topics and future plans of OMARE, including overlaying in AMR, are further discussed for further oceanography studies and applications.

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Journal article(s) based on this preprint

30 Jan 2023
Ocean Modeling with Adaptive REsolution (OMARE; version 1.0) – refactoring the NEMO model (version 4.0.1) with the parallel computing framework of JASMIN – Part 1: Adaptive grid refinement in an idealized double-gyre case
Yan Zhang, Xuantong Wang, Yuhao Sun, Chenhui Ning, Shiming Xu, Hengbin An, Dehong Tang, Hong Guo, Hao Yang, Ye Pu, Bo Jiang, and Bin Wang
Geosci. Model Dev., 16, 679–704, https://doi.org/10.5194/gmd-16-679-2023,https://doi.org/10.5194/gmd-16-679-2023, 2023
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

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We construct a new model, OMARE, that can carry out multi-scale ocean simulation through...
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