Ballabrera-Poy
Joaquim
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Model initialization in a tidally energetic regime : a dynamically adjusted objective analysis
Ballabrera-Poy
Joaquim
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Preprint
A simple improvement to objective analysis of hydrographic data is proposed
to eliminate spatial aliasing e ects in tidally energetic regions. The proposed
method consists of the evaluation of anomalies from observations with respect
to circulation model elds. The procedure is run iteratively to achieve convergence.
The method is applied in the Bay of Fundy and compared with
traditional objective analysis procedures and dynamically adjusted climatological
elds. The hydrographic skill (di erence between observed and model
temperature and salinity) of the dynamically adjusted objective analysis is
signi cantly improved by reducing bias and correcting the vertical structure.
Representation of the observed velocities is also improved. The resulting
ow
is consistent with the known circulation in the Bay.