  We demonstrate a formulation of the Azouani-Olson-Titi (AOT) algorithm in the
MPAS-Ocean implementation of the primitive equations of the ocean, presenting
global ocean simulations with realistic coastlines and bathymetry. We observe
an exponentially fast decay in the error before reaching a certain error level,
which depends on the terms involved and whether the AOT feedback control term
was handled implicitly or explicitly. A wide range of errors was observed for
both schemes, with the implicit scheme typically exhibiting lower error levels,
depending on the specific physical terms included in the model. Several factors
seem to be contributing to this wide range, but the vertical mixing term is
demonstrated to be an especially problematic term. This study provides insight
into the promises and challenges of adapting the AOT algorithm to the setting
of high-resolution, realistic ocean models.
