1. French Contribution to the COPS GPS Network C. Champollion, SA, IPSL, Paris, France J.-V. Baelen, LaMP, OPGC, Clermont-Ferrand, France F. Masson, IPGS, EOST, Strasbourg, France C. Flamant, SA? IPSL, Paris, France E. Richard, LA, Toulouse, France 5th COPS Workshop

2. Main Objectives - Add supplemental NRT GPS stations in France for real time assimilation at a regional scale (50 km spacing between GPS). - Densify the transect between all supersites for tomographic inversions (pixel size: 10 km in horizontal and 500m in vertical). - Dense instrumentation from the valleys to the crest to measure orographic moisture fluxes and convergences. - IASI retrievals of moisture validation 6 NRT + 16 non-NRT French GPS installed for the 3 months of the COPS field experiment

3. COPS GPS Network overview (update 30/03/07) Legend: Red and green: permanent French GPS Blue: « COPS » French GPS White: permanent German GPS Yellow: « COPS » German GPS Filled circled are Near Real Time GPS stations

4. -> Bruche, Murg and Rench valleys instrumentation -> Around and Inter supersites densification 22 additional GPS installed for COPS field experiment Transect densification

5. 3D google view of the « Bruche » Valley GPS Network East Supersite V

6. To be done before June: - Site survey for the french GPS in Germany (a German speaking help is welcome!) - Coordination with other ground networks (Flux, Mesonet, Sodar) - NRT communication and data processing tests - Installation of the GPS stations in late May.