@article{article_572713, title={Nudging Time-Scale Sensitivity of a Simplified Black Sea CIL Forcing with a Three-Dimensional Idealized Bosphorus Hydrodynamic Model}, journal={Journal of Anatolian Environmental and Animal Sciences}, volume={4}, pages={230–242}, year={2019}, DOI={10.35229/jaes.572713}, author={Sözer, Adil and Özsoy, Emin}, keywords={Bosphorus,Cold Intermediate Layer,Idealized 3d model}, abstract={<span lang="en-us" style="color:rgb(0,0,10);font-family:’Times New Roman’, serif;font-size:12pt;" xml:lang="en-us">Hydrodynamics of the Bosphorus Strait is examined under idealized
conditions with a three-dimensional numerical model. In particular, penetration
of a simplified Cold Intermediate Layer (CIL) of the Black Sea into the Strait
specifıed at the boundary is simulated with the aim of testing the sensitivity
of the idealized model with respect to nudging strength. Successful </span> <span lang="en-us" style="color:rgb(0,0,0);font-family:’Times New Roman’, serif;font-size:12pt;" xml:lang="en-us">penetration of a CIL-like
stratification can only be achieved by inflowing nudging time-scales less than
or equal to one day, while the outflowing nudging strength is found to be
insignificant. However, numerical instabilities at the boundary are observed
for strong nudging cases with tnudg </span> <span lang="en-us" style="color:rgb(0,0,0);font-family:’Times New Roman’, serif;font-size:12pt;" xml:lang="en-us">≤ </span> <span lang="en-us" style="color:rgb(0,0,0);font-family:’Times New Roman’, serif;font-size:12pt;" xml:lang="en-us"> 0.01 day suggesting
that a careful selection of the nudging time-scale is important to achieve
successful simulations of the CIL even in this highly idealized setup of the
Bosphorus strait. The presence of CIL altering the temperature distribution
within the northern section of the idealized channel has a significant impact
on the exchange through the strait. CIL reduces the density difference across
the strait resulting in decreased layer fluxes and velocities, while a
two-layer sense hydraulic control still holds at the sill. </span>}, number={2}, publisher={Bülent VEREP}