1. A testbed for a proposed new Research Infrastructure A multi-disciplinary Wide Area Sensor Network

2. LOFAR, a multi-disciplinary research infrastructure currently being implemented in the Netherlands as a testbed for a European wide adaptive sensor network for the purpose of Bringing Environment on-Line A wide area sensor network with…. Wired or wireless sensor fields Optical fibre network (backbone GÉANT) Central processing (grid technologies)

3. User communities currently committed to participation in BEL AIR: Meteology (now-casting, hazardous weather predictions) WATER: water management (water level, quality, dike surveillance, flood early warning) LAND: seismic and topology applications for earthquake/landslide early warning, infrastructure and pipeline safety, plant and livestock disease transmission prevention)