North Sea hydrodynamic modelling: a review

Lenhart, Hermann; Pohlmann, Thomas

doi:10.1007/bf03043229

Cited by 11 publications

(4 citation statements)

References 121 publications

(77 reference statements)

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“…Skogen and Moll (2005) showed that the choice of the physical model is decisive in determining the response of a coupled ecosystem model. In their review on hydrodynamical models Lenhart and Pohlman (2004) referred to a number of studies, where the performance of a biological model is strongly dependent on the performance of the underlying physical model. These authors also stress the need for reliable data on boundary conditions.…”

Section: Discussionmentioning

confidence: 99%

Predicting the consequences of nutrient reduction on the eutrophication status of the North Sea

Lenhart

Mills

Baretta-Bekker³

et al. 2010

Journal of Marine Systems

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135

116

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In this paper the results from a workshop of the OSPAR Intersessional Correspondence Group on Eutrophication Modelling (ICG-EMO) held in Lowestoft in 2007 are presented. The aim of the workshop was to compare the results of a number of North Sea ecosystem models under different reduction scenarios. In order to achieve comparability of model results the participants were requested to use a minimum spin-up time, common boundary conditions which were derived from a widerdomain model, and a set of common forcing data, with special emphasis on a complete coverage of river nutrient loads. Based on the OSPAR requirements river loads were derived, taking into account the reductions already achieved between 1985 and 2002 for each country. First, for the year 2002, for which the Comprehensive Procedure was applied, the different horizontal distributions of net primary production are compared. Furthermore, the differences in the net primary production between the hindcast run and the 50% nutrient reduction runs are displayed. In order to compare local results, the hindcast and reduction runs are presented for selected target areas and scored against the Comprehensive Procedure assessment levels for the parameters DIN, DIP and chlorophyll. Finally, the temporal development of the assessment parameter bottom oxygen concentration from several models is compared with data from the Dutch monitoring station Terschelling 135. The conclusion from the workshop was that models are useful to support the application of the OSPAR Comprehensive Procedure. The comparative exercise formulated specifically for the

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Section: Discussionmentioning

confidence: 99%

Predicting the consequences of nutrient reduction on the eutrophication status of the North Sea

Lenhart

Mills

Baretta-Bekker³

et al. 2010

Journal of Marine Systems

Self Cite

135

116

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“…There is a long history of modelling the North Sea involving all surrounding nations, ranging in complexity from barotropic tidal and storm surge models to 3D baroclinic models with ecosystem components. Reviews of hydrodynamic modelling in the North Sea are given by Jones (2002), Lenhart and Pohlmann (2004), Delhez et al (2004).…”

Section: Introductionmentioning

confidence: 99%

Downscaling a twentieth century global climate simulation to the North Sea

Ådlandsvik

Bentsen

2007

Ocean Dynamics

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The regional ocean model system (ROMS) is used to downscale a 26-year period of the twentieth century 20C3M experiment from the global coupled Bergen climate model (BCM) for the North Sea. Compared to an observational-based climatology, BCM have good results on the mean temperature, except for too low winter temperature. This is connected to a too weak inflow of Atlantic water. The downscaling gives added value to the BCM results by providing regional details, doubling the Atlantic inflow, and improving the mean winter temperature. For mean salinity, BCM has values very close to the climatology, whereas the downscaling becomes too fresh. The downscaling, however, improves the sea surface salinity, the vertical structure, and the Norwegian Coastal Current. It is concluded that the downscaling procedure as presented here is a suitable tool for assessing the future Atlantic inflow and sea temperature in the North Sea based on a global climate projection.

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“…can explain the different model results, nor is the RMSE a reliable measure of such comparisons if long time periods are not considered, i.e., at least one calendar year [5,21]. The various hydrodynamic models are developed for different purposes, leading to different formulations and different implementations [22].…”

Section: Introductionmentioning

confidence: 99%

ROMS Based Hydrodynamic Modelling Focusing on the Belgian Part of the Southern North Sea

Klonaris

Eeden

Verbeurgt

et al. 2021

JMSE

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The North Sea is a shallow sea that forms a complex physical system. The nonlinear interaction of the astronomical tides, varying wind fields and varying pressure systems requires appropriate approaches to be described accurately. An application based on the advanced numerical model Regional Ocean Modeling System (ROMS) was newly developed by the authors, tailored to simulate these hydrodynamic processes in the North Sea and the Belgian Continental Shelf, which is the area of particular interest in the present study. The purpose of this work is to develop and validate a state-of-the-art three-dimensional numerical model to form the basis of a compound operational and forecasting tool for the Belgian coastal zone. The model was validated with respect to water levels and temperature. Validation for astronomical tides was accomplished through the comparison of the principal constituents between the model results and observations at a number of tidal gauges in Belgium and other countries. A statistical analysis of the results showed that the model behaves as expected throughout the North Sea. The model response to the varying meteorological conditions was also validated using hindcast data for 2011 as input. In this case, the comparison between observed and modelled water levels showed a good agreement with average RMSE in Belgium 9.5 cm. Overall, the added value of this work is the development of an independent model for validation and comparison with other models and which can be used as an efficient tool for operational and forecasting purposes.

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North Sea hydrodynamic modelling: a review

Abstract: Senckenbergiana m a r i t i m a] 34 ] (1/2) ] 5 3 -8 8 I Frankfurt

Cited by 11 publications

References 121 publications

Predicting the consequences of nutrient reduction on the eutrophication status of the North Sea

Predicting the consequences of nutrient reduction on the eutrophication status of the North Sea

Downscaling a twentieth century global climate simulation to the North Sea

ROMS Based Hydrodynamic Modelling Focusing on the Belgian Part of the Southern North Sea

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