- AEROSME - Joint activity of Aerospace and Defense Industries Association of Europe and the European Commission
- EIONET - European Environment Information and Observation Network
- EPN - European Phenology Network
- EU-MEDIN - European Mediterranean Disaster Information Network
- EUMETNET - Network of European Meteorological Services
- EUMETSAT - SAF - EUMETSAT Satellite Application Facility Network
- ILTER - International Long Term Ecological Research
- INBO - International Network of Basin Organization
- NDSC - Network for the Detection of Stratospheric Change
- SAEON - South African Environmental Observation Network
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