Armant Vincent auteur aut IRD Vargas-Rojas F. auteur aut IRD Agazzi Victoria auteur aut IRD Desconnets Jean-Christophe auteur aut IRD Mougenot I. auteur aut IRD Beretta Valentina auteur aut IRD Debard Stephane auteur aut IRD Symeonidou D. auteur aut IRD Mouakher A. auteur aut IRD Guerin Joris auteur aut IRD Catry Thibault auteur aut IRD Roux Emmanuel auteur aut IRD text bookSection eng Thanks to open science initiatives, thousands of standardised datasets on Earth System compartments are now available on the web. In particular, we have widely used ISO 19115 to encode spatiotemporal aspects of Earth System observations. However, this standard does not specify the multiple dimensions of observations, including the features of interest, the observable properties, and the provenance. As a result, researchers interested in Earth System multi-disciplinary studies may miss meaningful datasets when querying independently domain-specific data portals. We propose a new Dataset Discovery System based on SOSA and DCAT ontologies, as well as the User-Centric Metadata Model (UCMM), to integrate dataset metadata from multiple data portals, each representing an Earth System compartment. The descriptive UCMM metadata model is exploited simultaneously to address semantic and structural heterogeneities and to build a descriptive Knowledge Graph explaining how retrieved datasets are semantically related to the user's search. We introduce the implementation of two Earth System Dataset Discovery use cases. The experiments and user uptake demonstrate the benefits of the Dataset Discovery System in multi-disciplinary Earth System studies. specialized Open Discovery Knowledge Graph Earth System 020 124 122 Demartini G. ed. edt IRD Hose K. ed. edt IRD Acosta M. ed. edt IRD Palmonari M. ed. edt IRD Cheng G. ed. edt IRD Skaf-Molli H. ed. edt IRD Ferranti N. ed. edt IRD Hernández D. ed. edt IRD Hogan A. ed. edt IRD 15233 271-288 Cham Springer 2025 International Semantic Web Conference, 23., Baltimore (USA), 2024/11/11-15 15233 https://www.documentation.ird.fr/hor/fdi:010095656 10.1007/978-3-031-77847-6_15 978-3-031-77846-9 [F B010095656] https://www.documentation.ird.fr/hor/fdi:010095656 IRD - Base Horizon / Pleins textes 2025-10-29 2026-06-12 fdi:010095656 fre