Clean Seas: A North Sea test site

Link:
Autor/in:
Beteiligte Person:
  • Sawaya-Lacoste, H.
Verlag/Körperschaft:
Elsevier B.V.
Erscheinungsjahr:
2000
Medientyp:
Text
Beschreibung:
  • Over three years, the Clean Seas project team focused on the problem of monitoring marine pollution and the role that existing earth observing satellites might play. Here we present some results from the North Sea test site, examined in detail during a two-year acquisition campaign. We have examined synergy within the data from radar, optical and infrared sensors, in conjunction with hydrodynamic models. We present results from two test periods, August 1997 and May 1998, during which several interesting hydrodynamic and turbidity patterns were observed in Sea Surface Temperature (SST), colour and Synthetic Aperture Radar (SAR) images. During the test periods studied, there was good correlation between the data sources, e.g. between SST and ERS-2 SAR images for August 97. Both data sets 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. Although the model reproduced the general temperature and sediment distributions well, the fine structures were not reproduced. Sediment distribution patterns from the model were verified using "chlorophyll concentration" data from Modular Optoelectronic Scanner (MOS) and the Sea Wide Field of view Sensor (SeaWiFS), that are representative of sediment concentration in these turbid water. In conjunction with the visible channels of the Advanced Very High Resolution Radiometer (AVHRR) and Along Track Scanning Radiometer (ATSR), they give an uncalibrated measure of the sediment load. In the North Sea test site, we see the importance of using a model to alleviate the problems of remote sensed data in temperate coastal climates, where both cloud cover and wind speed act to restrict the amount of useful data. Using the model we are able to see a more complete picture of the way the Rhine plume disperses over time than is evident from the remote sensed data alone.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

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