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12.12.2025 New version DT2024 of El Niño Southern Oscillation product

The El Niño Southern Oscillation maps and indexes have been updated with the DT2024 version of the DUACS input data.

[more]

03.12.2025 SWOT Level-3: version 3.0 reprocessing & shorter latency

A new SWOT Level-3 release (v3.0) is now available on AVISO : L3 basic & expert 2-km products have been upgraded.

[more]

25.11.2025 New version 3.0 of the 4DAtlantic-OHC product

The new version 3.0 of the 4DAtlantic-OHC (Ocean Heat Content) product is now available on Global Ocean.

[more]

25.11.2025 SWOT at COP30 in Belém

COP30 in Belém Photo by IISD/ENB | Mike Muzurakis

The contribution of the SWOT mission to the observation of the ocean and the cryosphere, as well as its potential support to climate education, ocean literacy, and the promotion of space science, were presented during a...[more]

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18.11.2025 Sentinel-6B, keeping an eye on the oceans for climate monitoring

Artist's view of the Sentinel-6 program satellites © CNES/ill./DUCROS David, 2016

Successfully launched on November 17, the Sentinel-6B mission will track sea level rise, a key indicator of climate change.[more]

[more]

06.11.2025 November 2025: Hurricane Melissa observed over ocean by satellites

Caribbean Sea on 2025/10/27 with Hurricane Melissa : the large swath is Swot Significant wave heights, while the thin lines are all nadir altimeters' SWH (including Swot's). The image south of Jamaïca shows winds from a Sentinel-1A acquisition with a dedicated extreme wind processing. (Data credits : Cnes/Nasa for Swot, Copernicus Marine Service for nadir altimeters, CYMS project (CLS for ESA) for Sentinel-1 extreme wind processing, hurricane Track RAMMB. Figure: Aviso)

Hurricane Melissa hitted Jamaica as a Category 5 hurricane on 2025/10/28. During its whole path, satellites observed the phenomenon, including altimeters and SAR over the ocean

[more]

24.10.2025 Ex-Hurricane Erin swell on the French coasts

CFOSat Swim (left), WAM model (middle) and Swot (right) wave spectra, overlaid on SWH; and CFOSat (Swim) and Swot nadir tracks. All the directions in the spectra are coherent (indicated by the position of the green-blue area, linked to the highest waves), as well as the wavelength of the swell (the closest from the center of the spectra, the longest the wavelength, with different scales observed depending on the instrument or model – Swotwavelength observability range is 500-1500 m). Credit CLS/Cnes/LOPS.

Swot and CFOSat observed the high swell from ex-hurricane Erin when it came close to European coasts. And their measurements enabled to build 2D ocean wave spectra, with their direction, period and amplitudes.

[more]

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