Ship ADCP measurements and tidal models of the North Sea

Detiding ADCP Data in a Highly Variable Shelf Sea: The Celtic Sea

“…Better improvements can be expected by combining the ship-mounted ADCP data and the numerical model. Howarth and Proctor (1992) corrected the phase shift of the model applied in the North Sea by using an ADCP dataset, concluding that ship-mounted ADCP measurements provide a spatial and temporal check on the model predictions. In the present study, the alternative correction to the numerical model involved the use of the detiding blending technique, which resembles the linear combination of data and dynamics used in data assimilation.…”

Detiding ADCP Data in a Highly Variable Shelf Sea: The Celtic Sea

“…Better improvements can be expected by combining the ship-mounted ADCP data and the numerical model. Howarth and Proctor (1992) corrected the phase shift of the model applied in the North Sea by using an ADCP dataset, concluding that ship-mounted ADCP measurements provide a spatial and temporal check on the model predictions. In the present study, the alternative correction to the numerical model involved the use of the detiding blending technique, which resembles the linear combination of data and dynamics used in data assimilation.…”

SailBuoy Ocean Currents: Low-Cost Upper-Layer Ocean Current Measurements

“…The frequency analysis was done by applying a fast Fourier transform (FFT) on the complex current velocity vectors to separate tidal and residual frequencies. For the tidal filter, we used the major semidiurnal and diurnal tidal component for the regions in question (see, e.g., [ 12 ]).…”

Onset and development of the Iberian poleward flow along the Galician coast

“…More effective and complex methods exist for reducing the tidal signal in shipboard ADCP records (e.g. Candela et al, 1992;Howarth and Proctor , 1992;Münchow , 2000) but the availability of repeated sections and the strength of the offshore residual currents (e.g. ∼ 15-20cms −1 ) in comparison to the tidal flow (∼8cms −1 , Fanjul et al, 1997) allowed us to use the simplest method.…”

Detiding ADCP Data in a Highly Variable Shelf Sea: The Celtic Sea

“…Better improvements can be expected by combining the ship-mounted ADCP data and the numerical model. Howarth and Proctor (1992) corrected the phase shift of the model applied in the North Sea by using an ADCP dataset, concluding that ship-mounted ADCP measurements provide a spatial and temporal check on the model predictions. In the present study, the alternative correction to the numerical model involved the use of the detiding blending technique, which resembles the linear combination of data and dynamics used in data assimilation.…”

SailBuoy Ocean Currents: Low-Cost Upper-Layer Ocean Current Measurements

“…The frequency analysis was done by applying a fast Fourier transform (FFT) on the complex current velocity vectors to separate tidal and residual frequencies. For the tidal filter, we used the major semidiurnal and diurnal tidal component for the regions in question (see, e.g., [ 12 ]).…”

Onset and development of the Iberian poleward flow along the Galician coast

“…More effective and complex methods exist for reducing the tidal signal in shipboard ADCP records (e.g. Candela et al, 1992;Howarth and Proctor , 1992;Münchow , 2000) but the availability of repeated sections and the strength of the offshore residual currents (e.g. ∼ 15-20cms −1 ) in comparison to the tidal flow (∼8cms −1 , Fanjul et al, 1997) allowed us to use the simplest method.…”

Detiding ADCP Data in a Highly Variable Shelf Sea: The Celtic Sea

“…Better improvements can be expected by combining the ship-mounted ADCP data and the numerical model. Howarth and Proctor (1992) corrected the phase shift of the model applied in the North Sea by using an ADCP dataset, concluding that ship-mounted ADCP measurements provide a spatial and temporal check on the model predictions. In the present study, the alternative correction to the numerical model involved the use of the detiding blending technique, which resembles the linear combination of data and dynamics used in data assimilation.…”

SailBuoy Ocean Currents: Low-Cost Upper-Layer Ocean Current Measurements

“…The frequency analysis was done by applying a fast Fourier transform (FFT) on the complex current velocity vectors to separate tidal and residual frequencies. For the tidal filter, we used the major semidiurnal and diurnal tidal component for the regions in question (see, e.g., [ 12 ]).…”

Onset and development of the Iberian poleward flow along the Galician coast

“…More effective and complex methods exist for reducing the tidal signal in shipboard ADCP records (e.g. Candela et al, 1992;Howarth and Proctor , 1992;Münchow , 2000) but the availability of repeated sections and the strength of the offshore residual currents (e.g. ∼ 15-20cms −1 ) in comparison to the tidal flow (∼8cms −1 , Fanjul et al, 1997) allowed us to use the simplest method.…”