2025 images of the month
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Oct. 2025: Swot unveils how high ocean waves can be
By observing swell, which propagates widely, Swot enables to estimate the highest waves generated by storms occuring in all the oceans, even if no altimetry overflew them at their peak.
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Sep. 2025: (Sub)mesoscale helps in understanding oxygen concentration in the waters
Observation of small-scale processes and filamentation is important to better understand the distribution of biogeochemical properties and the stirring.
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Aug. 2025: Filaments help in understanding a harmful algal bloom
Finite-size Lyapunov exponents (FSLEs) and Lagrangian advection of virtual particles from altimetry data, can be used to understand the physical mechanisms of the toxic algae concentration.
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Jul. 2025: Altimetry measures close to the coasts of La Rochelle
Coastal altimetry is a complex topic a new dataset AltiCap provides Sea Level Anomalies "close" to the coasts. A study looks at La Rochelle neighborhood
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June 2025: Forecasting Sargassum over the next season
A seasonal forecasting model for sargassum using observations has been developped, to better mitigate their stranding
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May 2025: Waves trapped along the coasts monitored by altimetry, thanks to Swot (and others)
Now, combined nadir and Swot gridded altimetry data can be used to monitor coastally trapped waves - and probably other coastal phenomena with similar time frequencies
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Apr 2025: Little eddy in a big ocean, seen by Swot
Swot instantaneous 2D sea surface height mapping over its swaths enables to detect more Sea Level Anomaly variability than previous multimission maps
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Mar. 2025: Computing vertical mixing from Swot sea surface heights
Swot surface observations can be used to reconstruct the vertical dynamics of the ocean with greater details than even before
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February 2025: A tidal bore visible in Swot data
Swot 1-day Calval orbit enabled to measure daily sea surface height in the Severn estuary at a moment when the tidal bore was present.
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Jan. 2025: 30 years of sea ice for both Arctic and Antarctic Oceans
A homogeneous 30-year series (1994-2023) of sea ice thickness and volume variations over the two hemispheres has been reconstructed from altimetry by Legos