Reconstruction of the Black Sea Deep-Water Circulation Using INMOM and Comparison of the Results with the ARGO Buoys DataстатьяИсследовательская статья
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Аннотация:Purpose. The present paper is focused on theoretical analysis of hydrophysical characteristics of
the Black Sea in 2011.
Methods and Results. The Black Sea hydrophysical characteristics are calculated using a version of
the marine circulation σ-model (Institute of Numerical Mathematics Ocean Model – INMOM) for
the Black, Azov and Marmara seas (BAMS) with high spatial 1 km resolution and 20 σ-levels
distributed non-uniformly over the depth. Quality of the simulated salinity and temperature fields is
assessed by their comparison with the data of the ARGO deep-profiling floats available for the period
under consideration. Degree of correspondence of the modeled current fields to the observed ones is
estimated based on the average deep-sea current velocities calculated from the data on the Argo
profiling floats’ movements.
Conclusion. The comparative analysis results show that the INMOM adequately reproduced vertical
distribution of the Black Sea hydrophysical characteristics. Comparison of the simulated temperature
and salinity fields with those derived from the ARGO buoys data demonstrates the fact that
the strongest deviations of the characteristics under study are observed in the sea upper layers
(0-100 m); whereas in the deep-water layers (300–1500 m), the degree of consistency between
the simulated results and the field data is much more higher. On the depths below 800 meters,
the deep-sea anticyclonic flows with the velocities attaining 1.5 cm/s are present. The revealed feature
is not typical of the generally accepted scheme of the Black Sea cyclonic circulation.