Early Results
In the easternmost track from BIO Hespeérides survey the fluorescence and the backscatter data suggest evidences of downward motions along isopycnals.
Physics-biology relations
Lagrangian Observations
Potential Density
Diagnosed Vertical Velocity using the QG Omega equation
Biological Data
Surface distribution of total chlorophyll
during the first survey of the Omega-1 (1996) in the Alboran Sea
Spatial distribution of Nanoplanktonic cells
(cell size between 2 and 8 microns) at surface level
during the first survey of Omega-1 Cruise
Acoustic Data
Backscatter distribution (38 khz) at 18 m during
the first
survey of the OMEGA-1 cruise in the Alboran Sea
Digital filter initialization
Unvariate analysis of density (SeaSoar) and absolute geostrophic
velocity (ADCP) are used as initial conditions (t=0) from a PE model.
Multi-level PE model with 
x=3km and
z=8m down to 300m is integrated
forward 18hr and backward 18hr from the same initial (t=0) state.
A low-pass digital filter is applied to the 36hr time series of model
fields produced by the forward and backward integration.
The resulting filtered fields represent the dynamically balanced
"slow mode" at t=0. This slow mode includes the ageostrophic
circulation and vertical velocity W.
DFI result
W diagnosted with the DFI technique at 101m, computed from SeaSoar data (Survey #1, OMEGA-1)
(=5m/day)
