CODAR Archived DATA Image Information
Archived CODAR Data Image Information
Available Data Sets
Raw Surface Currents
These images are the unprocessed data measured by CODAR.
Tidal Surface Currents
These images represent the currents calculated using a least squares fit of the following regional tidal constituents to the raw data.
- M2 - Half a Lunar Day (Period = 12.42 Hours)
- S2 - Half a Solar Day (Period = 12.00 Hours)
- N2 - Larger Lunar Elliptic (Period = 12.66 Hours)
- K1 - Luni-Solar (Period = 23.93 Hours)
- O1 - A Lunar Day (Period = 25.82 Hours)
Detided Surface Currents
These images represent the currents that result from subtracting the tidal surface currents from the raw surface currents.
Low-pass Filtered Surface Currents
These images represent the currents calculated by applying a lowpass filter with a cutoff frequency of thirty hours to the detided velocity field. Therefore the currents contained in this field oscillate with a period greater than thirty hours.
High-pass Surface Currents
These images represent the currents that result from subtracting the low-pass filtered surface currents from the detided surface currents.
These images illustrate the divergence of the low-pass filtered data represented by the equivalent vertical velocity assuming a one meter thick surface layer. (Upward velocity indicates divergence and downward velocity indicates convergence.)
These images illustrtate the vorticity of the low-pass filtered data normalized by the local Coriolis parameter (f).