abstract

Since the International Geophysical Year (IHY) in 1957, cosmic ray measurements by ground-based neutron monitors have been performed in international cooperation, since the analysis of the data to study energetic particles requires measurements at different latitudes and longitudes from as many stations as possible. Thus for a long time hourly averages of cosmic ray intensities have been available through the world data center. Since the analysis of Ground Level Enhancements, but also dose calculations for aircrews and passengers requires higher resolution data, 1-minute measurements are available from the websites of many stations and there are several efforts to collect all available data on ftp or web servers. This data, however, is often available only hours or days after the measurement, and all stations use slightly different data formats and naming conventions, which makes automatic analysis difficult. Space Weather applications that predict the arrival of coronal mass ejections at Earth or calculated increased doses for astronauts or airline crews and passengers by solar energetic particles need access to these measurements with the highest resolution possible, as fast as possible. Currently only few stations can provide their data in real-time, and the data is available only through the respective stations website. We are proposing to set up a central database at the European Space Weather Portal in Brussels, which will collect real-time data in the highest resolution from as many neutron monitor stations around the world as possible. We will develop affordable registration systems based on standard hardware and free/open software that will be deployed to neutron monitor stations that still lack high resolution capability. The data will be made available through the internet via direct access to the database and standardized webinterfaces. Only with this real-time database space weather prediction efforts that use cosmic ray data can succeed.
Last modified: Fri Apr 13 12:27:26 CEST 2007