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Mercator Ocean International's - @mercator_ocean latest report, based on Copernicus Marine Service data, summarises ocean conditions in 2025, which were marked by above-average global sea surface temperatures, widespread marine heatwaves, and global sea ice extent below the long-term average. These conditions were observed despite the onset of La Niña conditions.
This data visualisation presents three key insights into ocean conditions in 2025.
1️⃣ The main map on the first image shows sea surface temperature anomalies in the Northern Hemisphere for November 2025, with widespread warming and reduced Arctic sea ice extent in comparison with the long-term average.
2️⃣ The second graph shows daily sea surface temperatures for the global ocean, indicating that 2025 was the third warmest year for the global ocean since 1993.
3️⃣ The third graph shows that 2025 was the warmest La Niña year on record, with global sea surface temperatures exceeding previous La Niña years.
#CopernicusEU Marine data supports long‑term ocean monitoring by enabling assessment of key variables such as temperature trends, ocean–atmosphere interactions, and cryosphere change. These insights are key for monitoring the impacts of climate change on marine and polar environments.
Check out our #ImageOfTheDay album via the link in the bio!
