| This is the report that analyzes the advective transport in Monterey
Bay using dynamical systems templates. Here the HF radar data are
projected onto numerically derived basis functions to produce maps of the
surface velocity every two hours. Using dynamical systems templates, these
maps are used in Part III to delineate transport pathways. The projection
is used to fill in data voids, ensure compatibility with flow conditions
at open and closed boundaries in the analysis domain, and blend disparate
data and model output to produce synoptic fields. However, results reported
here are based solely on the HF radar observations described in Part I.
There are two types of basis functions. The vorticity basis is streamfunction
like and contains all of the vertical vorticity. The divergence basis is
velocity potential like and contains all of the horizontal divergence.
In three dimensions, not discussed here, the complete basis set is incompressible.Data
from August 1994 and June through August 1999 are compared. Comparison
of the percent variance explained by each mode shows inconsequential differences
between the 1994 and 1999 data sets. Spectra of amplitudes from these two
periods show strong peaks at one and two cycles per day, indicative of
tides and wind forcing. There is also energy at lower frequencies in the
vorticity modes. Thus, advective transport models in this region must account
for both large-scale flow structures and tides.
The report was written by A.D. Kirwan, Jr., B.L. Lipphardt, Jr., C.E.
Grosch, J.D. Paduan,
C. Coulliette, J. Hatfield, and S.Wiggins.
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