Plume spreading test case for coastal ocean models

<p>We present a test case of river plume spreading to evaluate numerical methods used in coastal ocean modeling. It includes an estuary–shelf system whose dynamics combine nonlinear flow regimes with sharp frontal boundaries and linear regimes with cross-shore geostrophic balance. This system...

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Autores principales:	V. Fofonova, T. Kärnä, K. Klingbeil, A. Androsov, I. Kuznetsov, D. Sidorenko, S. Danilov, H. Burchard, K. H. Wiltshire
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/64465c16e97242989986d840d3feb3e5
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spelling	oai:doaj.org-article:64465c16e97242989986d840d3feb3e52021-11-17T11:22:25ZPlume spreading test case for coastal ocean models10.5194/gmd-14-6945-20211991-959X1991-9603https://doaj.org/article/64465c16e97242989986d840d3feb3e52021-11-01T00:00:00Zhttps://gmd.copernicus.org/articles/14/6945/2021/gmd-14-6945-2021.pdfhttps://doaj.org/toc/1991-959Xhttps://doaj.org/toc/1991-9603<p>We present a test case of river plume spreading to evaluate numerical methods used in coastal ocean modeling. It includes an estuary–shelf system whose dynamics combine nonlinear flow regimes with sharp frontal boundaries and linear regimes with cross-shore geostrophic balance. This system is highly sensitive to physical or numerical dissipation and mixing. The main characteristics of the plume dynamics are predicted analytically but are difficult to reproduce numerically because of numerical mixing present in the models. Our test case reveals the level of numerical mixing as well as the ability of models to reproduce nonlinear processes and frontal zone dynamics. We document numerical solutions for the Thetis and FESOM-C models on an unstructured triangular mesh, as well as ones for the GETM and FESOM-C models on a quadrilateral mesh. We propose an analysis of simulated plume spreading which may be useful in more general studies of plume dynamics. The major result of our comparative study is that accuracy in reproducing the analytical solution depends less on the type of model discretization or computational grid than it does on the type of advection scheme.</p>V. FofonovaV. FofonovaT. KärnäK. KlingbeilA. AndrosovA. AndrosovI. KuznetsovD. SidorenkoS. DanilovH. BurchardK. H. WiltshireCopernicus PublicationsarticleGeologyQE1-996.5ENGeoscientific Model Development, Vol 14, Pp 6945-6975 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 V. Fofonova V. Fofonova T. Kärnä K. Klingbeil A. Androsov A. Androsov I. Kuznetsov D. Sidorenko S. Danilov H. Burchard K. H. Wiltshire Plume spreading test case for coastal ocean models
description	<p>We present a test case of river plume spreading to evaluate numerical methods used in coastal ocean modeling. It includes an estuary–shelf system whose dynamics combine nonlinear flow regimes with sharp frontal boundaries and linear regimes with cross-shore geostrophic balance. This system is highly sensitive to physical or numerical dissipation and mixing. The main characteristics of the plume dynamics are predicted analytically but are difficult to reproduce numerically because of numerical mixing present in the models. Our test case reveals the level of numerical mixing as well as the ability of models to reproduce nonlinear processes and frontal zone dynamics. We document numerical solutions for the Thetis and FESOM-C models on an unstructured triangular mesh, as well as ones for the GETM and FESOM-C models on a quadrilateral mesh. We propose an analysis of simulated plume spreading which may be useful in more general studies of plume dynamics. The major result of our comparative study is that accuracy in reproducing the analytical solution depends less on the type of model discretization or computational grid than it does on the type of advection scheme.</p>
format	article
author	V. Fofonova V. Fofonova T. Kärnä K. Klingbeil A. Androsov A. Androsov I. Kuznetsov D. Sidorenko S. Danilov H. Burchard K. H. Wiltshire
author_facet	V. Fofonova V. Fofonova T. Kärnä K. Klingbeil A. Androsov A. Androsov I. Kuznetsov D. Sidorenko S. Danilov H. Burchard K. H. Wiltshire
author_sort	V. Fofonova
title	Plume spreading test case for coastal ocean models
title_short	Plume spreading test case for coastal ocean models
title_full	Plume spreading test case for coastal ocean models
title_fullStr	Plume spreading test case for coastal ocean models
title_full_unstemmed	Plume spreading test case for coastal ocean models
title_sort	plume spreading test case for coastal ocean models
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/64465c16e97242989986d840d3feb3e5
work_keys_str_mv	AT vfofonova plumespreadingtestcaseforcoastaloceanmodels AT vfofonova plumespreadingtestcaseforcoastaloceanmodels AT tkarna plumespreadingtestcaseforcoastaloceanmodels AT kklingbeil plumespreadingtestcaseforcoastaloceanmodels AT aandrosov plumespreadingtestcaseforcoastaloceanmodels AT aandrosov plumespreadingtestcaseforcoastaloceanmodels AT ikuznetsov plumespreadingtestcaseforcoastaloceanmodels AT dsidorenko plumespreadingtestcaseforcoastaloceanmodels AT sdanilov plumespreadingtestcaseforcoastaloceanmodels AT hburchard plumespreadingtestcaseforcoastaloceanmodels AT khwiltshire plumespreadingtestcaseforcoastaloceanmodels
_version_	1718425614313062400

Plume spreading test case for coastal ocean models

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