The European Space Agency (ESA)'s Cluster mission has been in orbit for over a decade, providing multi-point observations of the Earth's space environment. An EU-funded project substantially upgraded the mission's data repository to afford a better understanding of what drives space weather.
The Cluster Active Archive (CAA) is a state-of-the-art data repository that contains processed and validated multi-point measurements collected by four Cluster spacecraft. CAA enables researchers to conduct detailed studies of the highest resolution Cluster observations accumulated from different types of experiments.
Further details:
http://cordis.europa.eu