Southern Ocean Carbon and Climate Observations and Modeling Proj

A yellow BGC Argo float being lowered off the stern of the Sir David Attenborough research ship

Greetings from 56.5S 81W where we deployed a @soccomproject.bsky.social @bgc-argo.bsky.social float. It will profile the ocean as it drifts eastwards! Fair winds!

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.

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! ⛴️

It’s very biologically quiet out here on the South Pacific, but we got the company and blessing of a beautiful albatross earlier. 🌊

39S, 122W

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

🧪📍🌊 🦑🍎 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

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

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

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.

New research with data from the @bgc-argo.bsky.social floats from a team led by researchers at @mbarinews.bsky.social and @miamirosenstiel.bsky.social + colleagues. Comments from @stephhenson.bsky.social, story by @mack-baysinger.bsky.social.

YouTube video by MBARI (Monterey Bay Aquarium Research Institute) How MBARI scientists are studying the ocean’s carbon flux in real time

I want to see the particles that sink carbon to the deep ocean, all the time and in real time.This summer we built an instrument that collects images of sinking particles every second, and visualizes them in 5 different ways. @mbarinews.bsky.social
youtu.be/4xXGlnCoik8

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

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

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...

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-...

🌊 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

🌊 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

🌊 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.

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

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

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 🧵

New research from SOCCOM and @mbarinews.bsky.social! Applying machine learning algorithms to biogeochemical float data has improved estimates of ocean productivity and carbon export in the Southern Ocean.

📢 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

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

🌎 Scientists from across the globe are at Scripps Oceanography as part of the @soccomproject.bsky.social annual meeting. SOCCOM, which is funded by the NSF's Division of Polar Programs, focuses on unlocking the mysteries of the Southern Ocean & determining its influence on climate. 🧵⬇️

Carrying Stories into the Sea: Tracking Argo Floats and Student Science This blog was written by NA172 Lead Science Communication Fellow Emily Jones.

In this #blog, NA172 Lead SCF Emily Jones writes about her experience documenting Argo Float deployment work off #EVNautilus led by @scrippsocean.bsky.social as part of the Global Ocean - Biogeochemistry Array (GO-BGC) and @soccomproject.bsky.social programs: bit.ly/44rSQe6

Congratulations to the entire biogeochemical community!