Copernicus Marine Global Ocean Heat Content Trend Map

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.^[1][2]

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.^[1]

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.^[3][1]