A Comparison of Three Diffusion Models of the Upper Mixed Layer of the Ocean.
NAVAL RESEARCH LAB WASHINGTON D C
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The Munk-Anderson, Vager-Zilitinkevich, and Mellor-Yamada turbulent diffusion models were used to model the upper mixed layer of the ocean and were compared to determine differences in predicted mixed layer depths for simple cases of mixed layer deepening. The mixed layer depths predicted by the models were found to be very strongly dependent upon the value of the Richardson number above which the generation of turbulence by the mean velocity shear was stabilized by the stratification. The larger this critical value of the Richardson number, the further the mixed layer deepened before the stratification at the base of the mixed layer was able to suppress the turbulent mixing and stop further erosion of the thermocline.
- Physical and Dynamic Oceanography