A New Methodology for Incorporating Tide Gauge Data in Sea Surface Topography Models

Autor: Marek Ziebart, JC Iliffe, J. F. Turner
Rok vydání: 2007
Předmět:
Zdroj: Marine Geodesy. 30:271-296
ISSN: 1521-060X
0149-0419
Popis: As part of the Vertical Offshore Reference Frames (VORF) project sponsored by the U. K. Hydrographic Office, a new model for Sea Surface Topography (SST) around the British Isles has been developed. For offshore areas (greater than 30 km from the coast), this model is largely derived from satellite altimetry. However, its accuracy and level of detail have been enhanced in coastal areas by the inclusion of not only the 60 PSMSL tide gauges with long-term records around the coasts of the United Kingdom and Ireland but also some 385 gauges established at different epochs and for different observation spans by the U. K. Admiralty. All tide gauge data were brought into a common reference frame by a combination of datum models and direct GPS observations, but a more significant challenge was to bring all short-term sea level observations to an unbiased value at a common epoch. This was achieved through developing a spatial-temporal correlation model for the variations in mean sea level around the British Isles,...
Databáze: OpenAIRE
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