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Seasonal heat content in the top half-mile of the ocean compared to the 1955-2006 average. Heat content in the global ocean has been above-average (red bars) since the mid-1990s. Graph by NOAA Climate.gov, based on data from NOAA NCEI.
Large map image for OCEAN HEAT

Changes in heat content in the top 2,000 meters (1.2 miles) of the ocean from 1993-2024. More places have gained heat (orange) than lost it (blue). Transparent gray shading means trends are small relative to natural variability. NOAA Climate.gov map, based on data from John Lyman.