The KOMPSAT European Cooperation aims at enhancing existing and establishing new collaborations between KARI and various European institutions. The objective is to create mutual data and information exchange possibilities and to develop new data applications of available and future space based Earth Observation sensors. In this paper, the concepts of a KOMPSAT European Regional Application Archive (KERAA), a joint development between KARI, ARCS and other European partners is presented. This includes the establishment of an addition KOMPSAT-2 downlink in Europe, and the developments of a state-of-the-art User service system for Urban and environmental security monitoring. The technologies chosen for searching the catalog, presenting and selecting the results and to access the available data at the regional application center include a WebMapServer (WMS), a WeblFeatureServer (WFS), and a WebCoverageServer (WCS) together with the spatial enabled PostGIS/PostgreSQL database. In addition, the KERAA system is interconnected with the Service Support Environment (SSE) run by the European Space Agency (ESA), fully supporting the integration into WebServices.
