Timely warning of impeding natural and environmental disasters, accurate climate prediction and detailed understanding of the status of global water resources: these are critically important everyday issues for the global community. Radio frequencies represent scarce and key resources used by meteorological services to measure and collect the observation data upon which analyses and predictions, including warnings, are based. This Handbook provides comprehensive technical information on the use of radio frequencies by meteorological systems for climate monitoring disaster prediction and detection. The soft-copy is exceptionally free-of-charge.