Sorin Constantin is an Earth Observation scientist at Terrasigna and a member of the geo-spatial.org community. He received his PhD at University of Bucharest, with a thesis on “Seawater turbidity analysis in the Romanian coastal area based on remote sensing data”. He completed post-doctoral studies at Laboratoire d’Océanographie de Villefranche-sur-Mer (France). His main interest are satellite data processing and the determination of water quality parameters from EO information. He has been involved in multiple research projects, most of them relying on open source software and open data.