# Copernicus Marine ARMOR3D Temperature Salinity Height Geostrophic Current and MLD
*data products*

## Specifications
- **level**: L4
- **distributor**: copernicus-marine-service
- **access endpoint**: https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012/description
- **access model**: open
- **primary data portal url**: https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012/description
- **use cases**: ["3D ocean temperature and salinity","Geostrophic current fields","Mixed layer depth"]
- **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_TSUV_3D_MYNRT_015_012/description","access_model":"open","primary_data_portal_url":"https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012/description","use_cases":"[\"3D ocean temperature and salinity\",\"Geostrophic current fields\",\"Mixed layer depth\"]","deployment_context":"orbital"}
- **relevance**: in-scope

## Editorial
ARMOR3D (product ID MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012) is a global L4 ocean-physics analysis product distributed by the Copernicus Marine Service. It delivers daily, gap-free three-dimensional fields of ocean temperature, salinity, absolute dynamic topography (sea surface height), geostrophic current components, and mixed-layer depth on a regular 0.125-degree global grid extending through 50 depth levels from the surface to the bottom.[^cmems-armor3d-desc][^guinehut-2012]

The product is generated by CLS (Collecte Localisation Satellites) using an optimal interpolation scheme that merges satellite altimetry sea-level anomalies with in situ temperature and salinity profiles from Argo floats, moorings, and ship-based measurements, together with a background climatology.[^guinehut-2012] Sea-level anomaly observations draw on satellite altimetry; the product incorporates multiple concurrent altimetry missions.[^cmems-armor3d-desc]

Two time-series variants are provided: a near-real-time (NRT) stream updated daily, and a reprocessed multiyear (REP) record. Both are distributed free of charge under the Copernicus Marine Service open-data licence and are accessible via the CMEMS data portal. The current product operates at 0.125-degree horizontal resolution; an earlier archived predecessor used 0.25-degree resolution.[^cmems-armor3d-desc][^fedeo-armor3d]

## Compositional position
- ocean-currents (topics) --[topic_capabilities]--> Copernicus Marine ARMOR3D Temperature Salinity Height Geostrophic Current and MLD
- ocean-heat-content (topics) --[topic_capabilities]--> Copernicus Marine ARMOR3D Temperature Salinity Height Geostrophic Current and MLD

## Sources
- [cmems-armor3d-desc] | Copernicus Marine ARMOR3D global 3D temperature, salinity, height, geostrophic current and MLD - product description | https://data.marine.copernicus.eu/product/MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012/description | tier=agency-doc | accessed=2026-06-11
- [guinehut-2012] | High resolution 3-D temperature and salinity fields derived from in situ and satellite observations, Guinehut et al. 2012, Ocean Sci. 8:845-857 | https://os.copernicus.org/articles/8/845/2012/ | tier=peer-reviewed | accessed=2026-06-11
- [fedeo-armor3d] | FedEO CEOS metadata record - MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012 | https://fedeo.ceos.org/collections/series/items/MULTIOBS_GLO_PHY_TSUV_3D_MYNRT_015_012?httpAccept=text%2Fhtml | tier=community | accessed=2026-06-11

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Source: https://eo-atlas.org/data_products/copernicus-marine-armor3d-tsuv
Maintainer: SpectraWorks B.V. (CC-BY 4.0)