This contribution describes the procedure used during the Prestige oil-spillage event, by means of an Operational Oceanography
System, and the behaviour of the present prediction tools (hydrodynamic and dispersion models) applied to it. The accuracy of these
tools is estimated by a reanalysis of field data transmitted by a sea surface drifting buoy, released at the time of the oil spill. The
numerical models applied were the Regional Ocean Modeling System (ROMS), fed by the available six-hourly NCEP atmospheric
information, together with a Lagrangian Particle-Tracking Model (LPTM). ROMS has been used to estimate the current fields for the
Bay of Biscay, whilst the LPTM has provided the oil spill trajectories. The results demonstrate that the accuracy of the numerical
models depends upon the quality of the meteorological input data. In this case, the current fields at the sea surface, derived by ROMS,
have been underestimated by the wind fields of the NCEP reanalysis data. An efficient calibration of these wind fields, with data
provided by the Gascony buoy (fixed oceanic and atmospheric station), achieves more realistic looking results; this is reflected in the
comparison between the buoy trajectory predicted numerically and the tracked movements of the drifting buoy.
© 2007 Elsevier B.V. All rights reserved.
This contribution describes the procedure used during the Prestige oil-spillage event, by means of an Operational Oceanography
System, and the behaviour of the present prediction tools (hydrodynamic and dispersion models) applied to it. The accuracy of these
tools is estimated by a reanalysis of field data transmitted by a sea surface drifting buoy, released at the time of the oil spill. The
numerical models applied were the Regional Ocean Modeling System (ROMS), fed by the available six-hourly NCEP atmospheric
information, together with a Lagrangian Particle-Tracking Model (LPTM). ROMS has been used to estimate the current fields for the
Bay of Biscay, whilst the LPTM has provided the oil spill trajectories. The results demonstrate that the accuracy of the numerical
models depends upon the quality of the meteorological input data. In this case, the current fields at the sea surface, derived by ROMS,
have been underestimated by the wind fields of the NCEP reanalysis data. An efficient calibration of these wind fields, with data
provided by the Gascony buoy (fixed oceanic and atmospheric station), achieves more realistic looking results; this is reflected in the
comparison between the buoy trajectory predicted numerically and the tracked movements of the drifting buoy.
© 2007 Elsevier B.V. All rights reserved.
การแปล กรุณารอสักครู่..

This contribution describes the procedure used during the Prestige oil-spillage event, by means of an Operational Oceanography
System, and the behaviour of the present prediction tools (hydrodynamic and dispersion models) applied to it. The accuracy of these
tools is estimated by a reanalysis of field data transmitted by a sea surface drifting buoy, released at the time of the oil spill. The
numerical models applied were the Regional Ocean Modeling System (ROMS), fed by the available six-hourly NCEP atmospheric
information, together with a Lagrangian Particle-Tracking Model (LPTM). ROMS has been used to estimate the current fields for the
Bay of Biscay, whilst the LPTM has provided the oil spill trajectories. The results demonstrate that the accuracy of the numerical
models depends upon the quality of the meteorological input data. In this case, the current fields at the sea surface, derived by ROMS,
have been underestimated by the wind fields of the NCEP reanalysis data. An efficient calibration of these wind fields, with data
provided by the Gascony buoy (fixed oceanic and atmospheric station), achieves more realistic looking results; this is reflected in the
comparison between the buoy trajectory predicted numerically and the tracked movements of the drifting buoy.
© 2007 Elsevier B.V. All rights reserved.
การแปล กรุณารอสักครู่..
