# Copernicus Marine OMEGA3D Global Observed Ocean Physics 3D Currents
*data products*

## Specifications
- **level**: L4
- **distributor**: copernicus-marine-service
- **access endpoint**: https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007/description
- **access model**: open
- **primary data portal url**: https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007/description
- **use cases**: ["3D quasi-geostrophic ocean current fields","Vertical velocity","Ocean circulation analysis"]
- **deployment context**: orbital
- **entity type**: data_product
- **last verified date**: 2026-06-11
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: copernicus-marine-service
- **attributes**: {"level":"L4","distributor":"copernicus-marine-service","access_endpoint":"https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007/description","access_model":"open","primary_data_portal_url":"https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007/description","use_cases":"[\"3D quasi-geostrophic ocean current fields\",\"Vertical velocity\",\"Ocean circulation analysis\"]","deployment_context":"orbital"}
- **relevance**: in-scope

## Editorial
OMEGA3D (product ID MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007) is a global L4 ocean-physics product distributed by the Copernicus Marine Service. It provides three-dimensional quasi-geostrophic current fields, including horizontal velocity components (U, V) and vertical velocity (W), on a global 0.25-degree grid from the surface to 1500 m depth.[^cmems-omega3d-desc][^essd-omega3d-2020]

The product is produced by CNR (Consiglio Nazionale delle Ricerche, Italy) and is derived from the ARMOR3D temperature, salinity, and sea surface height fields using the Q-vector formulation of the omega equation to diagnose vertical velocities and thermal wind balance for horizontal currents.[^essd-omega3d-2020] Both near-real-time (NRT) and reprocessed multiyear (REP) time series are available; the NRT stream extends the record at approximately annual cadence, though the precise extension schedule is stated on the product page rather than in the primary peer-reviewed literature.[^cmems-omega3d-desc]

The ESSD 2020 peer-reviewed paper describing the method covers the record through 2018.[^essd-omega3d-2020] The product is distributed free of charge under the Copernicus Marine open-data licence via the CMEMS data portal.[^cmems-omega3d-desc]

## Compositional position
- ocean-currents (topics) --[topic_capabilities]--> Copernicus Marine OMEGA3D Global Observed Ocean Physics 3D Currents

## Sources
- [cmems-omega3d-desc] | Copernicus Marine OMEGA3D Global Observed Ocean Physics 3D Currents - product description | https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_UVW_3D_MYNRT_015_007/description | tier=agency-doc | accessed=2026-06-11
- [essd-omega3d-2020] | A multi-year time series of observation-based 3D horizontal and vertical quasi-geostrophic global ocean currents, ESSD 2020 | https://essd.copernicus.org/articles/12/1711/2020/ | tier=peer-reviewed | accessed=2026-06-11

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Source: https://eo-atlas.org/data_products/copernicus-marine-omega3d-currents
Maintainer: SpectraWorks B.V. (CC-BY 4.0)