Articles | Volume 14, issue 11
https://doi.org/10.5194/gmd-14-6945-2021
https://doi.org/10.5194/gmd-14-6945-2021
Methods for assessment of models
 | 
17 Nov 2021
Methods for assessment of models |  | 17 Nov 2021

Plume spreading test case for coastal ocean models

Vera Fofonova​​​​​​​, Tuomas Kärnä, Knut Klingbeil, Alexey Androsov, Ivan Kuznetsov, Dmitry Sidorenko, Sergey Danilov, Hans Burchard, and Karen Helen Wiltshire

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Cited articles

Androsov, A., Fofonova, V., Kuznetsov, I., Danilov, S., Rakowsky, N., Harig, S., Brix, H., and Wiltshire, K. H.: FESOM-C v.2: coastal dynamics on hybrid unstructured meshes, Geosci. Model Dev., 12, 1009–1028, https://doi.org/10.5194/gmd-12-1009-2019, 2019. a, b, c
Armi, L. and Farmer, D. M.: Maximal two-layer exchange through a contraction with barotropic net flow, J. Fluid Mech., 164, 27–51, https://doi.org/10.1017/S0022112086002458, 1986. a, b, c, d
Avicola, G. and Huq, P.: Scaling analysis for the interaction between a buoyant coastal current and the continental shelf: Experiments and observations, J. Phys. Oceanogr., 32, 3233–3248, https://doi.org/10.1175/1520-0485(2002)032<3233:SAFTIB>2.0.CO;2, 2002. a
Avicola, G. and Huq, P.: The characteristics of the recirculating bulge region in coastal buoyant outflows, J. Mar. Res., 61, 435–463, https://doi.org/10.1357/002224003322384889, 2003. a, b, c, d, e, f, g, h, i, j, k
Beardsley, R. C. and Hart, J.: A simple theoretical model for the flow of an estuary onto a continental shelf, J. Geophys. Res., 83, 873, https://doi.org/10.1029/jc083ic02p00873, 1978. a
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Short summary
We present a test case of river plume spreading to evaluate coastal ocean models. Our test case reveals the level of numerical mixing (due to parameterizations used and numerical treatment of processes in the model) and the ability of models to reproduce complex dynamics. The major result of our comparative study is that accuracy in reproducing the analytical solution depends less on the type of applied model architecture or numerical grid than it does on the type of advection scheme.