Improving 3D-MOHID water model with an upscaling algorithm

Sobrinho, João; Pablo, Hilda de; Pinto, Lı́gia; Neves, Ramiro

doi:10.1016/j.envsoft.2020.104920

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…This method calculates alternatively one component of horizontal velocity implicitly while the other is calculated explicitly (Abbott andBasco 1994, Vaz et al 2009). The MOHID model has been mainly used for environmental change studies in coastal and estuary areas related to tide, tsunami, etc (Martins et al 2001, Leitão et al 2005, Sobrinho et al 2021.…”

Section: Model Configurationmentioning

confidence: 99%

Effects of stepwise tidal flat reclamation on tidal evolution in the East China and Yellow Sea

Lim,

Chang,

Cho

2023

Environ. Res. Lett.

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Because many coastal developments have been continuously occurred in the Yellow and the East China Sea, it is necessary to analyze the effect of persistent topographic change. This study simulated the tidal change in response to stepwise tidal flat reclamation in East China and the Yellow Sea using the MOdelo HIDrodinâmico (MOHID) ocean model. Based on previous studies and historical coastal information maps, we conducted several numerical experiments with reliable coastal topography changes around two areas (Jiangsu Shoalwater and Gyeonggi Bay) from 1990 to 1994 when the most active development took place. The results show that, unlike other components (S2, O1, and K1), the simulated amplitude of the M2 constituent significantly increased with the disappearance of the tidal flat in the Yellow Sea. At the same time, it decreased in the East China Sea. These results are consistent with the quantile regression analysis using observational data. We also found an accumulating effect of tidal energy flux when the reclamation continued, which does not appear in the previous studies. These results indicate persistent man-made tidal flat reclamation in a specific area can cause more remarkable regional tidal changes through tidal energy redistribution and modification.

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Section: Model Configurationmentioning

confidence: 99%

Effects of stepwise tidal flat reclamation on tidal evolution in the East China and Yellow Sea

Lim,

Chang,

Cho

2023

Environ. Res. Lett.

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“…Offline upscaling in this work is characterized by the upscaling of a local (or child) model application (hereafter CD) into a regional (or parent) model application (hereafter PD) but where the two applications are run separately, like the offline downscaling [35] often applied in ocean modelling. In MOHID, the online upscaling was developed by Sobrinho et al [64] following a similar methodology as in [65,66]. However, the online upscaling algorithm was made to upscale the entire overlapped area between two nested model domains, which means that for a PD to benefit from CDs simulating rivers or estuaries, it would need to upscale directly from full-scale bathymetric implementations of these coastal features.…”

Section: Offline Upscaling By Dischargementioning

confidence: 99%

Coupling Rivers and Estuaries with an Ocean Model: An Improved Methodology

Sobrinho

Pablo

Campuzano

et al. 2021

Water

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Freshwater sources are essential inputs for regional ocean models covering coastal areas such as the western Iberian Peninsula. The problem is how to include the mixture between fresh and salt water, typically performed by estuaries and in the adjacent areas of river mouths, without unsustainable increases of computational time and human setup errors. This work provides a proof-of-concept solution to both these problems through the use of an offline two-way methodology, where local schematic rivers and estuaries are responsible for mixing river freshwater with salt water of a regional model application. Two different offline upscaling methodologies—which focus on the implementation of tidal fluxes from local domains to regional domains in the context of operational modelling—are implemented in the Portuguese Coast Operational Modelling System (PCOMS) regional model application as well as in a version without rivers. A comparison between results produced by these methodologies, field data, and satellite imagery was performed, which confirmed that the proposed methodology of using schematic rivers and estuaries, combined with the new offline upscaling methodology proposed herein, represents a good solution for operational modelling of coastal areas subject to a high dominance of freshwater inputs.

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