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Advances in Computer and Communication

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ArticleOpen Access http://dx.doi.org/10.26855/acc.2023.04.001

Seeding Noise in Ensembles of Marginal Sea Simulations—The Case of Bohai and Yellow Sea

Lin Lin1,2,*, Hans von Storch2, Xueen Chen1

1Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao, Shandong, China.

2Institute of Coastal Research, Helmholtz Zentrum Hereon, Geesthacht, Germany.

*Corresponding author: Lin Lin

Published: June 8,2023

Abstract

As predicted by the stochastic climate model, small disturbances activated in numerical simulations of atmospheric and oceanic systems lead to the formation of unforced variations, named here “noise”. This has been demonstrated not only for global systems but also for regional systems. Here, we examine how sensitive this generation of noise is to the mechanism of seeding the internal variability in marginal sea models. The case considered is the circulation of the Bohai and Yellow Sea, as exposed to realistic atmospheric forcing. Two ensembles of simulations were formed. In all simulations, the numerical model is the same—in one, initialization was shifted in time, while the forcing was all the same NCEP CFSv2 in the overlapping time. In the second ensemble, the same code ran on different computer platforms. In both simulations, the intensity of the noise, as well as its temporal development are virtually identical. Thus, the mechanism of how the noise is seeded does not matter—what is needed is just small disturbances; the rest is done by the internal, nonlinear, and high-dimensional dynamics of the system.

Keywords

Noise seeding, the Bohai and Yellow Sea, FVCOM

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How to cite this paper

Seeding Noise in Ensembles of Marginal Sea Simulations—The Case of Bohai and Yellow Sea

How to cite this paper: Lin Lin, Hans von Storch, Xueen Chen. (2023) Seeding Noise in Ensembles of Marginal Sea Simulations—The Case of Bohai and Yellow Sea. Advances in Computer and Communication4(2), 70-73.

DOI: http://dx.doi.org/10.26855/acc.2023.04.001