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Result from 18 months of Pisces operations in the Celtic Sea

by

Lucy R Wyatt1,2, J Jim Green1,2, Mike D Moorhead3
1 Department of Applied Mathematics, University of Sheffield, Sheffield, UK
2 Seaview Sensing Ltd
3 Neptune Radar Ltd, Gloucester, UK

Abstract

The UK Department for Environment, Food and Rural Affairs (DEFRA) has set up a wave monitoring system, WAVENET, around the coasts of England and Wales comprising a number of wave buoys. During the period 2001-2005 trials of the Pisces HF radar system have been carried out to assess the feasibility of including such systems in the network. The trials have been funded by DEFRA and managed by the UK Met Office. Neptune Radar Ltd, who developed the Pisces radar from a University of Birmingham prototype, have been responsible for installing and operating the radar system to deliver wave measurements in real time. The first trial, November 2001 to May 2002, involved a single radar system that provides only a limited range of wave, current and wind parameters but demonstrated the feasibility of round-the-clock real-time data delivery. During the period December 2003 to June 2005 Neptune Radar provided data from a second radar enabling measurements of the directional spectrum and derived parameters, surface current speed and direction and wind direction. The data were sent to the University of Sheffield where they were processed and the results displayed on a web site. During the second half of the measurement period, management of the metocean processing and web site was carried out by Seaview Sensing Ltd who have licensed the software from the University.

Comparisons have been made of waves, winds and currents with a directional waverider and with products from the UK Met Office wave and surge models. Some preliminary results have been presented at previous ROW workshops. A number of improvements have been made to the software during and since the trial and all the data has recently been reprocessed. The latest results will be presented focussing primarily on the availability and accuracy of the wave measurements and the factors that influence them.

 
 
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