Global Ocean Biogeochemistry Array

#OSM26 hosted the Euro-Argo ERIC session "Monitor the Future Ocean: Applications of #OneArgo in Science & Operational Models"
📄14 poster presentations
🎤Moderated by Euro-Argo members #BSH @noc.ac.uk @metoffice.gov.uk & @mercatorocean.bsky.social
shorturl.at/wdpmh
#OceanScience #Argofloats @agu.org

Don't miss #OceanSciencesMeeting OT14D session "Monitor the Future Ocean: Applications of #OneArgo in Science and Operational Models" next Monday! #OSM26
👉 agu.confex.com/agu/osm26/me...

W-1 before the #OceanScienceMeeting26!
🌊 Don't miss the session "Monitor the Future Ocean: Applications of OneArgo in Science & Operational Models" chaired & moderated by Euro-Argo representatives 👉 agu.confex.com/agu/osm26/me...

And see global Argo's contribution to #OSM26 👇

#Argofloats #OneArgo

April 2026 National Academies hybrid workshop on exploring the future of @bgc-argo.bsky.social @globaloceanbgc.bsky.social - learn more here: tinyurl.com/4985e7zx 🌊

SAVE THE DATE! Aug. 2026 @globaloceanbgc.bsky.social Float Data Workshop in Seattle! Get the deets & submit expression of interest here: www.us-ocb.org/go-bgc-float... 🌊

🌊 OneArgo at OSM 2026 – Glasgow!

50+ talks 🎤 | 50+ posters 🖼️ | 1 town hall 🏛️

See how Argo helps us understand & protect our oceans
Full events: docs.google.com/spreadsheets...

#OneArgo #Argofloats @euro-argo.eu @argogermany.bsky.social @argocanada.bsky.social @globaloceanbgc.bsky.social

🌊 Unlock the Ocean’s Hidden Chemistry!
Excited to announce #argopy 1.4.0! 🎉
Now predict nutrients (NO₃, PO₄, SiOH₄) and carbonate variables (AT, DIC, pHT, pCO₂) with CANYON-B and CONTENT models—directly from your #argofloats data. Perfect for @bgc-argo.bsky.social users !
argopy.readthedocs.io

🧪📍🌊 🦑🍎 Design a sticker competition for @globaloceanbgc.bsky.social - deadline Feb 9 at midnight pacific time www.go-bgc.org/outreach/202...

🍎 @globaloceanbgc.bsky.social want to adopt a float?? Get real data into the classroom? It's free ;-) www.go-bgc.org/outreach/ado...

7/ Hats off to authors Steve Rintoul, Esmee van Wijk, Laura Herraiz-Borreguero and Madelaine Rosevear from CSIRO, AAPP, @utas.edu.au and @imas-utas.bsky.social – with support from @imos-aus.bsky.social – and the intrepid #Argo floats.
@euro-argo.eu
@soccomproject.bsky.social
@soosocean.bsky.social

Today's satellite shoutout 🛰️ is to NASA PACE, which gives us data of ocean color, biogeochemistry, and ecology! 🌊 🧪

Here is chlorophyll-a (signature of photosynthesizing plankton) along with ocean current magnitude and direction (arrows). The red dot is where I currently am on the RV Sikuliaq! ⛴️

A Christmas gift to the ocean from the team aboard the RV Sikuliaq: one specially wrapped biogeochemical-Argo float from @bgc-argo.bsky.social! 🌊

Profiling floats allow us to get real-time ocean data, helping us be in tune with ocean health and changes.

🧪📍🌊 🦑🍎 adopt your own float!! www.go-bgc.org/outreach/ado...

Frequency hopping enables cell phone tech. Hedy Lamarr is in the National Inventors Hall of Fame and her Wikipedia page is
en.wikipedia.org/wiki/Hedy_La...

If you want to adopt an @globaloceanbgc.bsky.social float, see our web page.

@bgc-argo.bsky.social @soccomproject.bsky.social

Depth (0 to 300 m) by time (2022 to 2026) plots of temperature, salinity, particulate organic carbon (POC), chlorophyll (CHL_A), oxygen, nitrate, pH at in situ temp/pressure, and computed dissolved inorganic carbon (DIC) for float 5906497 (adopted name Hedy Lamarr).

🌊BGC-Argo float of the month is 5906497 with 4 years under Antarctic sea ice, just popped out. It was adopted by the American School in Jeddah, Saudi Arabia and named “Hedy Lamarr” – the actress who co-invented and patented frequency hopping communications.  Named for her science contribution. 1/2

The 3 graphs show temperature, salinity, and oxygen from the surface to 300 m versus year from 2018 through 2025 for profiling float 5905383. The map shows the trajectory of the float from deployment in the Weddell Gyre (green square) and a loop around the Weddell sea to the present position at the red square.

What's interesting as the Thanksgiving Holiday arrives? The first @bgc-argo.bsky.social profiling floats begin to emerge from under Antarctic sea ice each year. Float 5905383 is the first @soccomproject.bsky.social float for 2025/26. It has spent 7.9 years operating under ice.
#argofloats #oneargo

Schematic showing oxygen dynamics in the subpolar North Atlantic Ocean

Our new 🌊 paper “Progressive oxygenation of the North Atlantic Subpolar Gyre” is out @jgroceans.bsky.social (open access): agupubs.onlinelibrary.wiley.com/doi/10.1029/...

We examined the breathing of one of the ocean’s lungs 🩺 and found some surprises

Paper summary in schematic, more info ⬇️

1/🧵

And I thought we made a lot of @bgc-argo.bsky.social profiling floats!!!! We're going to have to work harder. @globaloceanbgc.bsky.social @soccomproject.bsky.social

A new paper, led by GO-BGC researcher @koelling.bsky.social, using @bgc-argo.bsky.social data, examines ocean ventilation in the subpolar North Atlantic. These insights enhance our understanding of how oxygen enters the deep ocean and may aid in predicting future oxygen loss due to climate change.

100 years ago, research vessel #Meteor set sail to explore the Atlantic Ocean – one of the most important expeditions of the 20th century. To mark the anniversary, GEOMAR and DSM/Leibniz-Institut für Maritime Geschichte launched a storymap.

🔗 storymaps.arcgis.com/stories/5712...

A LEGO model of an Argo Float on a desk.

Two crew members with extended arms deploy an Argo Float from a ship.

How cool is this? A LEGO Argo Float! Thanks for the inspo @mbarinews.bsky.social! "Treated" everyone in the brick store to a 5min ad-hoc talk why Argo Floats are so cool and important. Shouldn't have asked what I'm building 🙃
✅Permanent Ocean Monitoring
✅Aid weather/climate forecasts
✅Free/open data

University of Miami Rosenstiel School (@miamirosenstiel.bsky.social) The Rosenstiel School of Marine, Atmospheric, and Earth Science is one of the world’s premier education and research institutions.

A decade of BGC-Argo and plankton records shows North Pacific heatwaves reshape food webs and trap small particles in midwater, slowing deep-ocean carbon export. Impacts vary by event, underscoring the need for sustained ocean monitoring. @mbarinews.bsky.social @miamirosenstiel.bsky.social

BGC‐Argo Floats Reveal Nitrite and Thiosulfate Dynamics in the Oceans With High Spatiotemporal Resolution UV-spectrophotometers can detect nitrite and thiosulfate concentrations BGC-Argo floats provide high spatiotemporal resolution of nitrite and thiosulfate of oxygen-deficient zones BGC-Argo float...

Revealing the ocean’s hidden chemistry 🌊

A new statistical approach developed by researchers @mbarinews.bsky.social & @miamirosenstiel.bsky.social enables detection of nitrite and thiosulfate in oxygen-deficient zones.

Read more: agupubs.onlinelibrary.wiley.com/doi/10.1029/... @agu.org

🌊A busy day for @mbarinews.bsky.social science and @globaloceanbgc.bsky.social, the major US contribution to @bgc-argo.bsky.social.

BGC-Argo floats used to study marine heatwaves and oxygen deficient zones. Great work by Mariana Bif - University of Miami, former MBARI postdoc.

Marine heatwaves have hidden impacts on ocean food webs and carbon cycling • MBARI New study analyzing data from robotic floats and plankton records reveals how marine heatwaves reshape ocean food webs and slow transport of carbon to the deep sea.

A new study led by @globaloceanbgc.bsky.social researchers at MBARI has found that marine heatwaves can reshape ocean food webs, slowing the transport of carbon to the deep sea and hampering the ocean’s ability to buffer against climate change.

Learn more: www.mbari.org/news/marine-...

New AI approach sharpens picture of carbon export in the Southern Ocean • MBARI Applying machine learning algorithms to a trove of data collected by robotic floats has improved estimates of ocean productivity and carbon export in the Southern Ocean.

Using robots and AI to unlock the secrets of a remote ocean with @soccomproject.bsky.social 🌊🤖🌊

Applying machine learning algorithms to a trove of data collected by robotic floats has improved estimates of ocean productivity and carbon export in the Southern Ocean: www.mbari.org/news/new-ai-...

Time series of a BGC‐Argo float WMO#5906483 deployed in the ETNP in January 2022 (see inset map reference). (a) Mean monthly POC stocks at the upper 100 m depth. (b) Chlorophyll fluorescence concentrations at the upper 200 m depth. Dashed black lines denote the ML. (c) POC concentrations overlain by the ML. (d) Nitrate concentrations. (e) Nitrite concentrations. (f) Thiosulfate concentrations. (g) Oxygen concentrations minus a background correction from the sensor calibration offset. Continuous black lines denote the isolines where corrected O2 = 1 μmol kg^-1

🌊BGC-Argo float of the month is a sensor, not a float. Bif and Johnson (GBC; doi/10.1029/2024GB008473) show that the concentration of nitrite can be extracted from the UV spectra of ISUS or SUNA nitrate sensors.

But more..

@globaloceanbgc.bsky.social floats. @mbarinews.bsky.social

At the 26th annual Roger Revelle Commemorative Lecture, MBARI’s Chris Scholin explored how robotics and AI are revolutionizing marine science and emphasized why developing technology and maintaining a persistent presence are critical to understanding our changing ocean: bit.ly/oceanography...

🌍 Big news from Scripps Oceanography! Today marks a new era as Meenakshi Wadhwa (@minwadhwa.bsky.social) becomes our 12th director, @ucsandiego.bsky.social’s vice chancellor for marine sciences, and dean of the School of Marine, Earth & Atmospheric Sciences. 🧵⬇️

🌊 Job Opportunity with BGC-Argo! 🌊

We’re hiring a Data Analyst to work on processing, quality control, and scientific analysis of data from Biogeochemical-Argo floats.

📩 Interested? Reach out to Dr. Giorgio Dall’Olmo: gdallolmo@ogs.it