Ionospheric specification services from the DIAS ionosonde network

The strategic goal of DIAS - European Digital Upper Atmosphere Server is to establish a unique e-infrastructure in Europe for the monitoring, specification, forecasting and prediction of the ionosphere - plasmasphere - thermosphere environment for both scientific and operational applications. The service is based on data from 10 European Ionosondes (Athens, Rome, Ebre, Arenosillo, Chilton, Juliusruh, Pruhonice, Moscow, Tromso and Sodankyla). DIAS developments are coordinated by the Ionospheric Group of NOA (Belehaki et al., 2005; 2006a; 2007) and the system has gone through 4 major releases since its first operation in 2007. The system is under continuous evaluation and improvement, through systematic upgrades and validation of the released services. The DIAS portal is accessible at http://dias.space.noa.gr.