OceanDataLab

7-day composite of wave heights from Scotland to France (dark red is 8 m) from SWOT KaRIN instrument (22 to 28 August 2025), showing land shadows and effects of currents on wave heights. In particular "fingers" of higher waves are pointing in the wave propagation direction and are caused by a focusing of waves in currents located "upwave" of the measurement.

The visualization tool for wave heights is just in time for my classes on waves starting in November!
odl.bzh/CACKkfxO. thanks to @oceandatalab.bsky.social

fingers of higer waves are caused by refraction of swell over currents.The first time we saw this kind of feature was on Envisat ASAR.

Dive into our new #OVL portal!
Compare #SWOT products (NASA, @cnes.fr) from #AVISO+ with #CFOSAT (@cnes.fr) and other satellite / in-situ measurements:
👉 aviso-calval.oceandatalab.com
Join us today / tomorrow at #SWOT meeting for live demos during coffee and lunch breaks, Moulleau Room, 2nd floor!

Follow the Tropical Storm Erin The North Atlantic cyclone season has begun with Erin, which has weakened to a tropical storm. Despite its rapid development and strong winds, Erin has already generated dangerous swells and rip curre...

The cyclone season has begun with Erin, now a tropical storm. TS Erin generated high swells along the U.S. coast and will bring big waves to European water. Have a look at the storm using 12um IR channel of @esa.int #Copernicus Sentinel3 SLSTR sensor on the #OVL portal
seashot.odl.bzh/s/5WG1csM443A

Northwest Passage chocked with ice Once known as a symbol of the Arctic’s rapid melt, the Northwest Passage was supposed to be the new maritime shortcut between oceans. In recent years, melting sea ice opened its channels for ships tha...

Once open from melting, this year, the NW Passage is chocked with ice. The #OneOceanExpedition on board the Statsraad Lehmkuhl had to turn back.
@esa.int #Sentinel1 SAR observations highlight this climate change around Arctic. Browse more on #OVL #seashotoftheweek:
seashot.odl.bzh/s/lyej0vRU-iA

High-pass filtered sea surface height measured by SWOT revealing a ring of scattered waves by a submarine shoal as ~ 1 km long swell arrives from storm ADC-1969

Shaded relief map of the straits between Java and Bali showing the presence of a few shoals. One of these is shallow enough to scatter 1 km long swells.

🌊 @oceandatalab.bsky.social added more data to their "SWOT explorer": July 2024 at 250 m resolution is in. And this is the last day, August 1, with some very nice swell scattering between Java and Bali. Does this underwater shoal has a name? odl.bzh/8z6noOP_

storm ADC-1969
youtu.be/VeSV2cuiABk?...

Excited to be at @esa.int #LPS25 showcasing the #oceanvirtuallab. Come meet us at the EO Arena, we will demo the #OVL portal at 10:30 today and SEAScope viewer tomorrow at 09:45

Checkerboard pattern with 1 mile by 1 mile squares of cleared forests appearing with lighter earth tones in and green squares with older forest.

Context image showing most of Oregon. The checkerboard patter is prominent south of Eugene, OR.

I was looking at SWOT ocean data using @oceandatalab.bsky.social great OVL tool ... when I noticed some funny pixels on land... and zooming it happens to be clear cutting patterns in the Oregon forests. I'm curious to know more about forestry management in that area!

odl.bzh/KgT-vr3a

OTC25: Massive Chlorophyll bloom North of Iceland During the ESA Ocean Training Course on board the Statsraad Lehmkuhl tallship, we were blessed with a huge chlorophyll bloom North of Iceland. We took this opportunity to do many stations in the area...

During the @esa.int #OTC25, we were blessed with a huge chlorophyll bloom North of Iceland. Many stations done in the area, including one in a Fjord. On #Sentinel3 OLCI L2 Chl, out of range values have been flagged as 'failed'. Have a look at #OVL #seashotoftheweek: seashot.odl.bzh/s/l97sfl7N8Ds

OTC25 Station 4 in the Lofoten Eddy On April 25, the OTC25 expedition aboard the Statsraad Lehmkuhl tallship made a station in the center of the Lofoten Eddy where very deep mixed layer is expected and was confirmed by a CTD cast at 120...

Station in the center of the Lofoten Eddy during @esa.int #OTC25 where very deep mixed layer is expected: CTD cast + BGC Argo float deployed that day. Wave drifters trajectories reveals location of this large anticyclonic eddy.
Have a look at #OVL #seashotoftheweek:

seashot.odl.bzh/s/jjmO86NENlM

One Ocean Expedition OTC25 First Station We are sailing on board the St. Lehmkuhl. for the ESA Ocean Train Course 2025. We are currently doing our first station with CTDs, deployment of manta trawls and deployment of buoys. Even if the bloom...

First station during @esa.int #OTC25 with CTDs, deployment of manta trawls and buoys! Even if the bloom is not fully develop, we hope to see interesting variability revealed by Copernicus #Sentinel3 OLCI Chl-a. All went well!
Have a look at #OVL #seashotoftheweek: seashot.odl.bzh/s/MxJ5aupQ8WA

Three persons standing in front of a white ship. Grey floor and blue sea and sky behind

Map of northern Norway (bottom right corner) showing a little ship icon in orange and white, arrows showing ocean currents in white and images of the roughness of the sea surface in grey tones.

And off they sailed! Last photo of our students before they started the journey. I keep looking at the position of the ship, here's yesterday with #Sentinel1 data and geostrophic currents, from @oceandatalab.bsky.social

#OSTC25_uliege
@universitedeliege.bsky.social

Statsraad Lehmkuhl position is live The one ocean expedition (https://www.oneoceanexpedition.com) has started. The St. Lehmkuhl is heading to Tromso to embark students from the ESA Ocean Training Course 2025. You can follow the ship on ...

The one ocean expedition has started. The St. Lehmkuhl is heading to Tromso to embark students from @esa.int Ocean Training Course 2025. You can follow the ship on #OVL portal by selecting today’s date in calendar: odl.bzh/0pe1SoFc
#seashotoftheweek: seashot.odl.bzh/s/xLbJgb5sPgs

Image of sea ice in the Southern Ocean taken by Sentinel 2 on Dec. 3 2024. the patterns of ice fractures in the center of the image seems to wrap around 66.62°S , 169.80°E , as if dragged by an ocean eddy.

I was looking again at these fantastic Sentinel 2 images over sea ice. I know nothing about ice rheology but the patterns of the fractures in the ice are fascinating. I can't help thinking there is an ocean eddy in the middle of this image, dragging the ice around.

odl.bzh/723iJTqJ

We’re thrilled to announce the launch of our quarterly OVL newsletter—designed to keep you updated on the latest developments and enhancements to our tools: #OVL Portal, SEAScope, and SEAShot. Click on this link to subscribe and receive our first news soon: news.oceandatalab.com/subscription...

Happy new year! The atmospheric front visible in #Sentinel1 SAR and @copernicusecmwf.bsky.social analyzed wind is typical of North Atlantic storm and brought us nice wind & waves to celebrate the new year with joy. Have a look at #OVL #seashotoftheweek: seashot.odl.bzh/s/wPbCZdaIdsI

Nature is amazing . I was looking for MIZ features, and I found this vortex street ... and lee waves . odl.bzh/jRvRtgH2

More cool pics of waves in ice and around icebergs ... 🌊
odl.bzh/fV57RQCv

Large waves encountered by #VG2024 #vendeeglobe skippers these past few days. More than 8m SWH was observed by #Copernicus altimeters. The large waves and their propagation were well predicted by #MeteoFrance MFWAM model. More information at
#OVL #seashotoftheweek: seashot.odl.bzh/s/UPo8KgQuIuI

Hi Bluesky! To celebrate our new account, we’re excited to share a stunning 10-day animation of a cyclonic-anticyclonic eddy pair, captured beautifully by Chlorophyll-a data from @ESA_EO @CopernicusEU. 🌊✨ #Sentinel3 #OLCI. More information at #OVL #seashotoftheweek: seashot.odl.bzh/s/p7gjMzi8Rgc