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Proposal of deployment of a UHF-radar wind-profiler network along the french Mediterranean coast for the HYMEX experimental phase

Caccia Jean-Luc

The LSEET-LEPI takes part to the HYMEX project for scientific aspects concerning atmosphere and ocean physics. The HYMEX experimental phase should start by 2009-2010. In this framework the laboratory proposes the deployment of a UHF-radar wind-profiler network along the french Mediterranean coastline. This project is in the frame of "Observations in the Mediterranean sea".
The temporal and vertical ranges and resolutions of the UHF-radar wind profilers are well appropriate for atmospheric boundary-layer observations from local to regional (mesoscale) scales and their measurements consists of the vertical profiles of the three wind components and of turbulent parameters (see for instance recent published UHF radar-derived results from the ESCOMPTE campaign).
Five UHF radars operated by different institutions (to be sollicited for acceptation of collaboration) are susceptible to be part of the network : one in Nice (Météo-France/Nice Airport), one in the Toulon area (Degréane-Horizon/LSEET-LEPI), one in Marignane (Météo-France/Marseille-Provence Airport), and two others to be suitably installed (from EDF and CNRM/Météo-France, respectively). For these two radars a site in the Nîmes-Montpellier area and another one in the Narbonne-Perpignan area would be appropriate to complete the whole coverage of the french Mediterranean coast. A network covering 500 km with a 100-km step would be therefore available.
The purpose of the poster is to present the experimental strategy and the general scientific objectives of that network (for instance, atmospheric numerical model initialisation and validation, local winds, offshore/onshore wind and sea breeze systems at differents scales ...) to the HYMEX communauty. In association with other instruments measuring different parameters, it should contribute to more general scientific aspects such as the already indentified "Mediterranean climatic system and scale interactions" or "Climatic change".