| AMOC |
Atlantic Meridional Overturning Circulation |
| CEOS |
Committee on Earth Observing Satellites |
| CLIVAR |
Originally the Climate Variability and Predictability project, but renamed the Climate and Ocean Variability, Predictability, and Change project |
| DA |
Data Assimilation |
| DBCP |
Data Buoy Cooperation Panel |
| ECV |
Essential Climate Variable |
| EEZs |
Exclusive Economic Zones |
| ENSO |
El Niño–Southern Oscillation |
| ENSO OS |
El Niño–Southern Oscillation Observing System |
| EOV |
Essential Ocean Variable |
| FOO |
Framework for Ocean Observing |
| GCOS |
Global Climate Observing System |
| GLOSS |
Global Sea Level Observing System |
| GMSL |
Global Mean Sea Level |
| GODAE |
Global Ocean Data Assimilation Experiment |
| GOOS |
Global Ocean Observing System |
| IOC |
Intergovernmental Oceanographic Commission |
| IOCCP |
International Ocean Carbon Coordination Project |
| IOOC |
Interagency Ocean Observation Committee |
| IOOS |
Integrated Ocean Observing System |
| JCOMM |
Joint Technical Commission for Oceanography and Marine Meteorology |
| JCOMM OCG |
JCOMM Observations Coordination Group |
| JCOMMOPS |
JCOMM In-situ Observing Programmes Support Centre |
| JGOFS |
Joint Global Ocean Flux Study |
| MSR |
Marine Science Research |
| NCEI |
National Centers for Environmental Information |
| NODC |
National Oceanographic Data Center |
| NORLC |
National Ocean Research Leadership Council |
| OceanObs |
International community process for review of the Ocean Observing System for Climate |
| OCP |
Ocean-Climate Partnership |
| OOPC |
Ocean Observational Panel for Climate |
| POGO |
Partnership for Observation of the Global Oceans |
| SOOP |
Ships of Opportunity Program |
| SOT |
Ship Observation Team |
| TOGA |
Tropical Ocean Global Atmosphere program |
| UNFCCC |
United Nations Framework Convention on Climate Change |
| UNOLS |
University National Oceanographic Laboratory System |
| WCRP |
World Climate Research Program |
| WHP |
WOCE Hydrographic Programme |
| WMO |
World Meteorological Organization |
| WOCE |
World Ocean Circulation Experiment |
| XBT |
eXpendable Bathy-Thermograph |