статья в журнале

En

Ocean Modelling

ISSN:1463-5003
eSSN:1463-5011

2020

Bruciaferri, D.¹

Shapiro, G.⁰

Zatsepin, A.¹

Ezer, T.¹

Wobus, F.¹

Francis, X.¹

Hilton, D.¹

10.1016/j.ocemod.2019.101534

The Black Sea is one of the largest land-locked basins in the world. Due to the vulnerability of its unique marine ecosystem, accurate long-term modelling of its hydrodynamics is needed. In this study, we first compare the skills of four NEMO based Black Sea models in a free-run which use different discretization schemes. We find that the most accurate results are obtained with the model (named CUR-MEs) which has a 3D mesh optimized for the prevailing dynamics. This new model uses a curvilinear horizontal grid with increased resolution (approximate to 950 m) over the shelf-break and lower resolution (approximate to 6 km) in areas where the scale of relevant processes is larger (approximate to 20 km). In the vertical, CUR-MEs uses Multi-Envelope curved s-levels designed to optimize the representation of the Cold Intermediate Layer (CIL). Second, we compare CUR-MEs in free-run with the data-assimilative CMEMS reanalysis. Validation against independent observations shows that the two models have similar skills - e.g., the difference between the mean BIAS and RMSE of the two models is approximate to 0.15 degrees C for temperature and approximate to 0.07 for salinity. The CUR-MEs model, even without data assimilation, is able to correctly reproduce the details of the variability of the Mean Kinetic Energy and the CIL.

OCEAN MODELLING, VERTICAL COORDINATE, CURVILINEAR GRID, BLACK SEA

2020-04-08 11:04:05