Mercator Ocean International is an international reference for Ocean data and expertise and provides a variety of thematic pages and Ocean Bulletins, following changes in the Ocean in line with climate change and natural variations. We provide a growing suite of Bulletins, offering in-depth coverage on topics like Marine Heatwaves, Sea Ice, El Niño, and more…
About the Bulletin
Mercator Ocean International publishes a monthly sea surface temperature bulletin reporting on mean temperature and marine heatwave conditions for the month just passed. It includes:
- Regions where MHWs are present and the time these events started,
- Timeseries showing the total surface occupied by MHWs globally and for the European region,
- The total number of days of exposure to MHW during the month (including only strong and higher intensity categories).
Source: Mercator Ocean International
Mercator Ocean International
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- OceanEye at UNGA81: Connecting Ocean Observation, Digital Systems and Governance
- Digital Ocean Week 2026: Advancing trusted AI for Europe’s Digital Ocean (4/4)
- Digital Ocean Week 2026: OceanEye, from Vision to Implementation (3/4)
- Digital Ocean Week 2026: Shaping the Future of Copernicus Marine (2/4)
- Digital Ocean Week 2026: Europe’s Digital Ocean in Action (1/4)
- European Commission launches OceanEye: Mercator Ocean to contribute to the initiative
- Digital Ocean Week 2026: Towards the Next-Generation Ocean Intelligence Services
- Greece Joins France and Norway to establish the new IGO Mercator International Centre for the Ocean
- Decoding the Ocean #2: The Blue Economy
Mercator Ocean Bulletins
Our regularly updated bulletins provide essential data and forecasts on critical Ocean variables. These bulletins leverage Mercator Ocean’s in-house expertise, combining observational datasets and advanced numerical models.
Weekly Marine Heatwave BulletinsWeekly forecasts and analysis of marine heatwave events across the globe and throughout the year. Used datasets include observations (satellite sea surface temperature maps) and numerical model analyses (assimilating satellite and in situ observations) to derive 10-day marine heatwave forecasts.
Monthly Ocean Temperature BulletinsThe Ocean temperature bulletins provide a comprehensive overview of global ocean warming, highlighting new temperature records and their impact as a source of stress on marine ecosystems. These bulletins are available on a monthly basis throughout the year.
Seasonal Sea Ice BulletinsMercator Ocean oceanographers have been studying marine heatwaves across the global Ocean. They analyse a variety of datasets from observation analyses (satellite sea surface temperature maps) to model analyses (assimilating satellite and in situ observations) and model forecasts.
