- GEOSS - The Group on Earth Observations http://www.earthobservations.org/
- GTOS - Global Terrestrial Observing System http://www.fao.org/gtos/
- IGOS - Integrated Global Observing Strategy http://www.fao.org/gtos/igos/index.asp
- GOOS - The Global Ocean Observing System http://www.ioc-goos.org/
- CEOS - Committee on Earth Observation Satellites http://www.ceos.org/
- GMES - Global Monitoring for Environment and Security http://www.gmes.info/
