G-REQS (Geospatial in-situ Requirements) is a database tool and a standard methodology designed to collect user-driven requirements for in-situ datasets in the context of the Group on Earth Observations (GEO). G-REQS is open to contributions and users from agencies, initiatives, networks, research infrastructures, private companies, institutions, and public organizations in search for fit-for-purpose Earth observation in-situ datasets.

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G-REQS is an initiative funded by the European Environment Agency (EEA) in the context of the EEA-RTD Service Level Agreement on “Enhancing the access to in situ Earth observation data in support of climate change adaptation policies and activities”.