Lots of Earth Observation data has become available at no charge in Europe and the US recently and there is a strong push for more open EO data. For example, a recent paper on Landsat data use and charges by the US National Geospatial Advisory Committee – Landsat Advisory Group starts with the following overarching recommendation: “Landsat data must continue to be distributed at no cost”. Similarly, the five ESA Sentinel satellites that would soon go into orbit, starting with Sentinel-1 in 2013, have already adopted a fully open and free data access policy.
Open EO data that are currently made available by space agencies such as ESA and NASA are not following the linked data paradigm. Therefore, from the perspective of a user, the EO data and other kinds of geospatial data necessary to satisfy his or her information need can only be found in different data silos, where each silo may contain only part of the needed data. Opening up these silos by publishing their contents as RDF and interlinking them with semantic connections will allow the development of data analytics applications with great environmental and financial value.
The European project TELEIOS is the first project internationally that has introduced the linked data paradigm to the EO domain, and developed prototype applications that are based on transforming EO products into RDF and combining them with linked geospatial data.
In LEO, the core academic partners of TELEIOS (UoA and CWI) join forces with 2 SMEs (SpaceApps, VISTA) and one industrial partner (PCA) with relevant experience to develop software tools that support the whole life cycle of reuse of linked open EO data and related linked geospatial data. Finally, to demonstrate the benefits of linked open EO data and its combination with linked geospatial to the European economy, a precision farming application is developed that is heavily based on such data.