Global Ocean Biogeochemistry Array

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

🌊 Oceanographic Magazine highlights an Argo float in the Arctic!

A new Argo float is now collecting year-round data in Northeast Greenland, in one of the most remote and rapidly changing regions on Earth.

🔗 Read more: oceanographicmagazine.com/features/oce...

#Argo #OneArgo #Argofloat #Argofloats

History made for the ocean: #BBNJ Agreement enters into force, protecting high seas & deep seabed, safeguarding life under water.

“Our ocean is the foundation of our very existence. Today we took an important step forward to save our ocean, & to save our future” - ED @ingerandersen.bsky.social

🌊 Historic news! With 60 ratifications, the #BBNJ Agreement will enter into force — a decisive step to protect ocean areas beyond national jurisdiction.

Now more than ever, ocean observations and data must be at the core to turn words into action.

📢 24-month postdoc starting Jan 2026 at Mercator Ocean & Laboratoire d’Océanographie. Focus: modeling MCDr, ocean alkalinization & CO₂ using BGC-Argo data. PhD in oceanography/climate science required.

🔗 Details & apply : emploi.cnrs.fr/Offres/CDD/U...

Time series of monthly Northern Pacific Ocean sea surface temperature anomalies from 1850 to August 2025 alongside multi-model expectations of the warming in this area (scenario SSP2-4.5).

The Northern Pacific Ocean is currently smashing temperature records.

And it is reaching these levels far earlier than the current generation of climate models had expected.

A short thread 🧵

StartBlue Ocean Enterprise Accelerator Welcomes New Cohort Thirteen teams from across the United States are set to embark on a journey toward commercialization as part of this year’s StartBlue Ocean Enterprise Accelerator program at the University of Californ...

The StartBlue Ocean Enterprise Accelerator at @ucsandiego.bsky.social welcomes the next wave of ocean innovators! 🌊💡 The program led by Scripps & @radyschool.bsky.social helps ocean-based startups that support @noaa.gov's Ocean Enterprise Initiative. Learn more: bit.ly/4nC5Ju7

Biogeochemical floats are helping provide the data we need to study ocean-climate connections in the Southern Ocean and around the globe. @soccomproject.bsky.social @mbarinews.bsky.social

Students from @perkinsvision.bsky.social recently visited #WHOI to learn about careers in marine science, an annual visit organized by blind senior scientist Amy Bower, who wants to make sure people with disabilities know they have options.

📲Get inspired by her journey: go.whoi.edu/fe-bower

Congratulations to the entire GO-BGC team on the 300th float deployment! 🎉

GO-BGC is an NSF-funded project to build a global network of chemical and biological sensors that will monitor ocean health.

Learn more and download data at www.go-bgc.org

As #HurricaneErin barrels through the Atlantic, WHOI’s #Argo group is keeping watch!

The storm is tracking right over a number of the floats, which cycle through the water column collecting temp & salinity data that help scientists forecast its track & intensity.

📲Learn more: go.whoi.edu/argo

📢 Less than one week left to submit your abstract to the #OneArgo session at #OSM2026 !

🌊 OT013 "Monitor the future ocean: Applications of OneArgo in science and operational models"

📅 Deadline: August 20th, 3:59 UTC

➡️ agu.confex.com/agu/osm26/pr...

#Argofloats #OceanScience #OceanObserving

Screen shot of the article by Liniger et al. "Two decades of increase in Southern Ocean net community production revealed by BGC-Argo floats. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GB008371

Graphs shown the increase in mean (a) and total (b) Annual Net Community Production over the Southern Ocean from 2004 to 2022. The spatial distribution of the ANCP increase in shown in panel (c).

🌊The Southern Ocean is warming, is productivity changing? New paper by Liniger et al. uses the nitrate sensors on 274 SOCCOM/BGC-Argo floats to compute annual NCP. It has increased significantly over the past two decades.
@mbarinews.bsky.social @soccomproject.bsky.social @bgc-argo.bsky.social‬

Congratulations to the entire GO-BGC team on the 300th float deployment! 🎉

GO-BGC is an NSF-funded project to build a global network of chemical and biological sensors that will monitor ocean health.

Learn more and download data at www.go-bgc.org

BGC-Argo profiling float WMO 7902313 is carried down the deck of the R/V OceanXplorer before launch. This float carries oxygen, pH, nitrate, chlorophyll and particle sensors. It will operate for 5 to 6 years, sampling from 2000 m to surface every 10 days.

A map of the 300 GO-BGC profiling float locations. All floats are part of the BGC-Argo array and were funded by the US National Science Foundation.

🌊 BGC-Argo float of the month. The 300th float of the GO-BGC project was launched in the S Atlantic. Funded by the US NSF, these floats provide essential observations of ocean metabolism - productivity, oxygen, pH... @bgc-argo.bsky.social‬ @globaloceanbgc.bsky.social #OneArgo #Argo

🧪📍🌊 🦑🍎 great opportunity to adopt a
@globaloceanbgc.bsky.social
biochemical profiling float for your students www.go-bgc.org/outreach/ado...

Deploying Argo Biogeochemical Floats in the Western Pacific This blog was written by Science team member Melissa Miller.

During NA172, #CorpsofExploration member Melissa Miller leads the deployment of #ArgoFloats off #EVNautilus to monitor global ocean health via temperature, salinity, dissolved oxygen, pH, and more. Learn more in her #blog: bit.ly/4nz1qAL

@globaloceanbgc.bsky.social @soccomproject.bsky.social

YouTube video by TEDx Talks LISTENING TO THE OCEAN’S CLIMATE CLUES | Louise Delaigue | TEDxEDHECNice

🌊 My TEDx Talk is live!

And yes — it involves deep-sea robots, underwater sound, and the surprising role of wind in the fight against climate change.

Dive in!

🔗 youtu.be/mPi08_HC6cg?...

#TEDTalk #OceanScience #ClimateChange #ScienceCommunication #BGCArgo #PostdocLife #OceanResearch

BIO-Carbon & MASTS - International Data Workshop on the Role of Marine Life in Storing Carbon in the Ocean

We have reopened the expression of interest till the *23rd June*

Please share with your networks

forms.office.com/Pages/Respon...

MBARI research and technology play integral role in new Decade of Action for Cryospheric Sciences • MBARI International collaborations leverage MBARI’s expertise and advanced technology to better understand polar ecosystems.

From mapping the Arctic seafloor to surveying biodiversity around Antarctica, MBARI technology is helping researchers worldwide study polar environments and will play an integral role in the new United Nations Decade of Action for Cryospheric Sciences.

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

📈 The monthly @keelingcurve.bsky.social atmospheric carbon dioxide concentration clocked in at 430.2 parts per million in May for 2025, a 3.5 ppm increase over May 2024’s measurement of 426.7 ppm. Read more about the work led by Scripps Oceanography & @noaa.gov: bit.ly/43tMyeP

What’s the deal with #JuneGloom? ☁️ ☀️ 🚫

Here’s a breakdown of the science behind the gray skies, courtesy of Rachel Clemesha, an atmospheric scientist with the Weather Extremes and Climate Impacts Analytics (WECLIMA) group at Scripps Oceanography.

Ocean Science Leaders, Advocates to Push for Action at UN Event Nearly a dozen scientists from Scripps Institution of Oceanography at the University of California San Diego are joining other leaders of the global ocean science community to make the case for steppe...

🌊 From spotlighting deep-sea biodiversity to driving innovation in the #BlueEconomy to championing #MarineProsperityAreas, Scripps Oceanography experts are helping shape the future of ocean conservation at the United Nations Ocean Conference in Nice, France. 🇫🇷