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• W1609554154 abstract "In autumn 2003 a new radar system was installed and included in the radar network of the Catalan Meteorological Service (SMC). It was the third unit of a network of four radars designed to cover the complex topographical area of Catalonia (approximately 32 000 square km), located in the NE of Spain. The initial design of the network was performed in 1997 considering the already existing weather radar installed in Vallirana (near Barcelona) in 1996. Using a propagation model, visibility maps were derived to study new potential radar sites aiming to minimize beam blockage problems to obtain an improved coverage area suitable for radar quantitative precipitation estimates. The high density of the radar network was calculated to improve the precipitation observing capacity in a highly complex topographical area prone to flooding according to the dominant torrential Mediterranean regime. From the initial network proposal, three new sites were evaluated and selected in the centre of Catalonia and in the northern and southern coast. Two new radars were installed in 2002 and 2003 and the remaining one is planned to be built during 2005. Some hardware characteristics of the first two systems were upgraded during 2003 so the radars are very similar from the technical point of view. They have an offset 4 m antenna dish providing a one-degree main lobe beamwidth. The antenna controller is the RCP-8 unit manufactured by Sigmet, Inc. The C-band transmitter, is based in a Travelling Wave Tube design, and is controlled by a digital Sigmet RVP-8 processor and receiver. Pulse compression is being implemented in 2004 to allow the use of long pulses with radial range resolutions similar to those obtained with higher power transmitters. The main application of the radar network is weather surveillance and monitoring of heavy precipitation events by the Catalan Meteorological Service in combination with other observational tools (lightning detection system, satellite images, etc.). Other applications, developed through collaboration research projects, include the assimilation of radar observations to improve preCorrespondence to: J. Bech (jbech@meteocat.com) cipitation forecasts of mesoscale NWP models and also the enhanced processing of radar data to allow its quantitative use in a specifically-designed hydrological model." @default.
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• W1609554154 date "2004-01-01" @default.
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• W1609554154 title "The weather radar network of the Catalan Meteorological Service: description and applications" @default.
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