A method for the
assimilation of Lagrangian data
Slide 2
Discrete ocean model
Observations
"Extended Kalman Filter"
Ocean vs Atmosphere
Lagrangian information
Methodology
Point vortex systems
Slide 10
Slide 11
Two point vortices
Simple example: N=1, L=1
Two vortices, N=2, one
tracer, L=1
Two vortices, N=2, one
tracer, L=1
Slide 16
Slide 17
Assessment of method
N=2, L=1 (Ne =100
noise realizations)
Ensembles of different
system noise realizations, N=2, L=1
Divergence of the filter
Ocean Atmosphere
Dependence on initial tracer location
Vortices of different
strength
Four vortices, N=4
N=4, L=2
Comparison with assimilation
of velocity
Conclusions