Guide to the GOS
Edition 2010 (updated 2013)

(English) - (French) - (Spanish) - (Russian) - (Chinese)

Part I - Purpose, Scope, Requirements and Organization of the GOS
Part II - Observational Data Requirements
Part III - Surface-based Subsystem
Part IV - Space-based Subsystem
Part V - Reduction of Level I data
Part VI - Data Quality Control
Part VII - Monitoring the Operation of the GOS
Part VIII - Quality Management