Clean seas: a North Sea test site
Abstract:The Clean Seas project focused on the role that existing Earth observing satellites might play in monitoring marine pollution. Results are presented here from August 1997, for the North Sea test site, using sea surface temperature (SST), colour and synthetic aperture radar (SAR) images in conjunction with a hydrodynamic model. There was good correlation between data sources, e.g. between SST and ERS-2 SAR images. Both datasets showed the development of fine plume structures close to the Rhine outflow, apparently associated with the outflow, and possibly caused by tidal pulsing of the Rhine Plume.
The model reproduced general temperature and sediment distributions well, but fine structures were not reproduced. Model sediment distribution patterns were verified using 'chlorophyll concentration' data from colour sensors, representative of sediment concentration in turbid water. In conjunction with the visible channels of the Advanced Very High Resolution Radiometer and Along-Track Scanning Radiometer, they give an uncalibrated measure of the sediment load. The model gives a more complete picture of the temporal dispersion of the Rhine Plume over time than is evident from the remotely sensed data alone.
Document Type: Research Article
Affiliations: 1: James Rennell Division for Ocean Circulation and Climate, Southampton Oceanography Centre European Way Southampton SO14 3ZH UK 2: Institut für Meereskunde Universität Hamburg, Troplowitzstrae 7/111, D-22527 Hamburg Germany 3: Satellite Observing Systems, 15 Church Street Godalming, Surrey GU7 1EL UK 4: ACRI Mecanique Appliquée et Sciences de l'environnement, 260, route du Pin Montand, BP234 06904 Sophia Antipolis Cedex France 5: Marine Environment Unit, Space Applications Institute Joint Research Centre of the European Commission I-21020 Ispra (VA) Italy 6: Remote Sensing Laboratory, Department of Physical Geography Stockholm University 10691 Stockholm Sweden
Publication date: April 1, 2004