Coastal Observatory, Liverpool Bay, Irish Sea National Oceanography Centre website

The NOC High Frequency (HF) Radar Home Page

More information

HF Radar Home Page



Llandulas radar site

Formby radar site

HF Radar Links

Archived plots

Area covered by HF Radar
Area covered by HF Radar
About the NOC HF radar system
The NOC HF Radar System uses the WERA radar system, and consists of two radar sources pointing out over the Irish Sea, measuring currents and waves over an area of up to 1600 km2.

The two sites are based at Llanddulas/Abergele, North Wales pointing northwards, and Formby, Merseyside pointing roughly west-south-west. They measure the sea surface every 20 minutes by sending out pulses over the sea surface and measuring the response signal. Combining information from the two sites gives enough information to calculate the current and wave parameters.

At each site, there are four transmit antennae set out in a square, and 16 receive antennae arranged in a straight line parallel to the shoreline, and the two sets of antennae are usually spaced about .5 km apart. To find out more about the individual sites, click on the Llandulas and Formby radar sites.

Land based radar is very useful for measuring the sea surface, as it covers a large area and negates the need for expensive ship time.

Time series data is available from 1st August 2005 onwards, and can be downloaded from this website. NB. This system was switched off 6th December 2011 signalling the end of the experiment. Raw data is available now, and Quality Controlled data will be available later. (See 'Data' above/left)

The WERA hardware and measuring software is supplied by Helzel Messtechnik, the grid conversion and collection controlling software by Neptune Radar Ltd, and the inversion software to produce waves by Seaview Sensing Ltd.

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