# Copernicus Marine Global Ocean Heat Content Trend Map
*data products*

## Specifications
- **level**: L4
- **distributor**: copernicus-marine-service
- **access endpoint**: https://data.marine.copernicus.eu/product/GLOBAL_OMI_OHC_trend/description
- **access model**: open
- **primary data portal url**: https://data.marine.copernicus.eu/product/GLOBAL_OMI_OHC_trend/description
- **use cases**: ["Ocean heat content trend monitoring","Climate indicator reporting","Earth energy imbalance assessment"]
- **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/GLOBAL_OMI_OHC_trend/description","access_model":"open","primary_data_portal_url":"https://data.marine.copernicus.eu/product/GLOBAL_OMI_OHC_trend/description","use_cases":"[\"Ocean heat content trend monitoring\",\"Climate indicator reporting\",\"Earth energy imbalance assessment\"]","deployment_context":"orbital"}
- **relevance**: in-scope

## Editorial
The Copernicus Marine Global Ocean Heat Content Trend Map (current product ID OMI_CLIMATE_OHC_GLOBAL_trend, DOI 10.48670/moi-00236) is an Ocean Monitoring Indicator (OMI) product distributed by the Copernicus Marine Service. It presents the long-term linear trend of ocean heat content (OHC) at the global and basin scale, expressed in W/m².[^cmems-ohc-climate-page][^cmems-ohc-access]

The product is produced by Mercator Ocean International. OHC is computed as the trend from integrated temperature differences along vertical profiles over 0-2000 m depth, using an ensemble of datasets including GLORYS, C-GLORS, ORAS5, CORA5.2, and ARMOR-3D. The trend map isolates the systematic change in stored ocean heat over the observational record and is provided as a gridded climate indicator, updated periodically as the underlying record extends.[^cmems-ohc-climate-page]

Distribution is open and free of charge via the CMEMS data portal. A legacy product ID (GLOBAL_OMI_OHC_trend) appears in some Copernicus Marine URLs; the current product ID on the data store is OMI_CLIMATE_OHC_GLOBAL_trend, and DOI 10.48670/moi-00236 resolves to the current product.[^cmems-ohc-desc][^cmems-ohc-climate-page]

## Compositional position
- ocean-heat-content (topics) --[topic_capabilities]--> Copernicus Marine Global Ocean Heat Content Trend Map

## Sources
- [cmems-ohc-desc] | Copernicus Marine Global Ocean Heat Content Trend Map - legacy product description URL | https://data.marine.copernicus.eu/product/GLOBAL_OMI_OHC_trend/description | tier=agency-doc | accessed=2026-06-11
- [cmems-ohc-climate-page] | Copernicus Marine OMI_CLIMATE_OHC_GLOBAL_trend - current product description | https://data.marine.copernicus.eu/product/OMI_CLIMATE_OHC_GLOBAL_trend/description | tier=agency-doc | accessed=2026-06-11
- [cmems-ohc-access] | Copernicus Marine Ocean Monitoring Indicator - Global Ocean Heat Content trend map access page | https://marine.copernicus.eu/access-data/ocean-monitoring-indicators/global-trend-map-ocean-heat-content | tier=agency-doc | accessed=2026-06-11

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Source: https://eo-atlas.org/data_products/copernicus-marine-ocean-heat-content-trend
Maintainer: SpectraWorks B.V. (CC-BY 4.0)