DATA-TERRA -DINAMIS/ForMaTerre: a Very High Resolution Satellite Data Facility for sharing access to optical Earth Observation resources and to on-line processing services for Digital Surface Models creation

The French National Institutional Facility for Shared Access to Satellite Imagery (DINAMIS) is a cross-functional component of the National Research Infrastructure DATA-TERRA. It was created in 2018 under the impetus of several funding French organizations (CNES, CNRS, IGN, INRAE, IRD, CIRAD). Its mission is to organize and operate the procurement and the access to both Very-High resolution satellite data (SPOT6-7, Pléiades, among other) and to advanced products derived from Earth observation resources.

To meet these objectives DINAMIS ensures the supply and dissemination of very high resolution datasets meeting the needs (a) of the French scientific communities of Land surfaces (THEIA), Ocean (ODATIS), Solid Earth (FormaTerre), Atmosphere (AERIS) and Biodiversity (PNDB), (b) of French Governmental Organizations, NGOs invested of a public mission, and some private companies involved in R&D projects. In complement, DINAMIS is opened to international collaborations with possible limited access for any scientists belonging to public research laboratories after membership certification. DINAMIS further applies an Open data policy to all Spot 6-7 orthorectified datasets over France (with more than 10 annual coverages of the territory at 1.5 m resolution).

DINAMIS acquires and disseminates to its certified users Very High-Resolution Imagery from past satellites (Spot 1-5, through the SWH/Spot World Heritage repository) and to active satellites (Spot 6-7, Pléiades, Pleiades Neo); it will further be plugged in 2025/26 to up-coming programs (PWH/Pléiades World Heritage; CO3D). All products are pooled in a unified Catalog. The Catalog is regularly updated with a gross 1 Million square kilometers per year with annual Spot 6 national coverages, results from users tasking or Archive requests of Pléiades and Spot 6-7 in response to specific needs. All products are associated to a tailor-made License enabling all certified users to access the datasets.

In complement to the satellite data access, DINAMIS is interfaced to on-demand processing services operated by the Thematic Datahubs of DATA-TERRA. For instance, DINAMIS provides seamless access to the DSM-OPT webservice of FormaTerre allowing the calculation of Digital Surface Models, true ortho-images and ortho-mosaics from Pléiades and Spot 6-7 stereo/tri-stereo images. This services hosts currently ca. 200 users with 15 to 20 on-line processing per week. All generated surface models are distributed with a CC-BY-NC license through the FormaTerre and THEIA catalogs, allowing to promote open science principles.