Ocean Abbreviations and Acronyms
- ORCASOcean Response Coastal Analysis System
- ORHABOlympic Regional Harmful Algal Bloom
- ORLCOcean Research Leadedship Council
- ORMAOceanmracing Multihull Association
- ORNLOak Ridge National Laboratory
- ORPPOcean Research Priorities Plan
- ORSAOperations Research Society of America
- ORTOOcean Reef-Tower Oases
- OSObserving Dystem
- OSAOuter Soundingsvarray
- OSAAOperational Satellite Active Archive
- OSCOcean Science Committee
- OSDPOperations System Development Program
- OSEObserving System Experiments
- OSESObserving System Experiments
- OSMIOcean Scanning Multispectral Imager
- OSNAPOverturning In The Subpolar North Atlantic Program
- OSOOffice of Systems Operations
- OSPOn Stagnant Poqd
- OSPREYOcean Science Program In Recruitment and Education for Youth
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