Abstract
Abstract: In climate-ocean models, eddy mixing coefficients are often
constant in space and time. However, observations, advances in theory,
and high-resolution-eddy-resolving ocean models have revealed
significant variability in the strength of isopycnal mixing both
spatially and temporally. A theory that includes the effect of mean flow
suppression has been developed by [1] it has a strong impact on
tracer uptake and ventilation. This theory is used in offline
calculations by [1, 2, 4] but has not been implemented as a
parameterization in an ocean model and in this study we implement it for
the first time in an ocean model [3]. The parameterization is tested
in a non-eddy-resolving ocean model, demonstrating passive ventilation
of a tracer as a function of depth and latitude. The first main result
is this parameterization improves the mean state of the ocean. The other
result is this parameterization improves the sensitivity of tracer
uptake to changing winds.