🌊 𝗙𝗶𝗳𝘁𝘆 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗼𝗰𝗲𝗮𝗻 𝗰𝗵𝗲𝗺𝗶𝘀𝘁𝗿𝘆 𝗶𝗻 𝗼𝗻𝗲 𝗽𝗹𝗮𝗰𝗲: 𝗚𝗟𝗢𝗗𝗔𝗣𝘃𝟯 One seawater sample captures one place, one depth and one moment. Combined with millions of others it can help reveal how the ocean is changing. This blog post introduces GLODAPv3 and the work behind this global synthesis 👉 bit.ly/3Rj4K7K

Fifty years of ocean chemistry in one place: GLODAPv3 is here!

Working with marine carbonate-system observations has taught me how much effort lies behind every row of an oceanographic dataset: long hours at sea, careful sampling, laboratory analyses, calibration...

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Check out our new blog post 🌊 A recent study finds that a cold bias in the northern Arabian Sea in CMIP6 models delays monsoon onset by ~1 week, weakens circulation, and reduces rainfall across India. Reducing this SST bias could improve future monsoon projections. @egu.eu bit.ly/4p8EMQB

Can the Ocean Explain Why Climate Models Struggle with the Indian Monsoon?

Few climate phenomena affect as many people as the Indian Summer Monsoon (ISM). Between June and September, it delivers most of the annual rainfall over the Indian subcontinent, supporting agriculture...

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Growing kelp might not be a viable CO₂ removal technique.

A promising natural technique to remove CO2 could backfire

Several start-ups have tried to grow seaweed to remove atmospheric CO2, but this could affect the levels of nutrients in the ocean and hamper other CO2-sucking processes

newscientist.com

🌊🚨 New study! Beyond wind speed: what really controls air–sea gas exchange? A Baltic Sea study shows CO₂ transfer can be ~30% lower than in the open ocean due to 👉 limited fetch → smaller waves 👉 surfactants dampen turbulence Surface conditions matter! 🔗 bit.ly/4d0xx8V @egu.eu #Oceanography

Beyond wind speed: what really controls air-sea gas exchange?

When we think about what drives air-sea gas exchange (such as CO2), wind usually gets all the credit. Strong winds stir the surface, enhance turbulence, and speed up gas transfer. But a new study in A...

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🌊 New interface for ocean carbonate chemistry data bit.ly/4tJ27ta Jiang et al. (2026) compiled 68 cruise, time-series, observational, and model-based products, highlighting differences in coverage, resolution, and methods. Find the right dataset for your ocean carbon research: 🔗 bit.ly/3PWvud7

New Unified Interface for Existing Ocean Carbonate Chemistry Data Products

Here is a great resource for anyone working on ocean carbon: Jiang et al. (2026) compiled a comprehensive synthesis of data products for ocean carbonate chemistry — all in one place for you! The paper...

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🌬️🌊 Find out in our latest blog post how winds above Antarctica can shape the deep ocean. 🔗 bit.ly/4rU6HDB The Zonal Wave-3 atmospheric pattern influences sea ice and polynyas, helping control how much dense water sinks to form Antarctic Bottom Water. @egu.eu #OceanScience #Oceanography

How atmospheric circulation patterns high above the Southern Ocean influence the deepest layers of the global ocean

The ocean surrounding Antarctica plays a crucial role in the climate system. Along parts of the Antarctic coast, very cold and salty water becomes dense enough to sink all the way to the ocean floor. ...

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🌊 Satellite chlorophyll observations often have large gaps. Explore this new global chlorophyll-a dataset at a monthly 0.25° resolution (with uncertainties), where missing data were filled using Biogeochemical Argo observations. 💡 blogs.egu.eu/divisions/os... @oc4c.bsky.social @egu.eu #OceanScience

A synergy of observations: Filling the gaps in an ocean colour chlorophyll-a record

Chlorophyll-a (chl-a), as the dominant photosynthetic pigment within phytoplankton, provides an indication of the phytoplankton biomass and are essential for understanding global and regional changes ...

blogs.egu.eu

www.youtube.com/watch?v=IcJl...

TRICUSO Episode One: Expanding the Capacity of Observation in the Southern Ocean

YouTube video by TRICUSO

youtube.com

📽️TRICUSO’s first #projectvideo! Featuring the beautiful #SouthernOcean, interviews with our consortium #scientists and our ambitions to innovate #sensor technology and engage #citizenscience platforms. Special thanks to #60South & #TheOceanRace 🔗Link in comments @horizoneu.bsky.social #REA

🌊🌀 Learn how mesoscale eddies modulate air–sea CO₂ exchange in the Southern Ocean. 🔍The key findings of a new 27-year high-resolution model study by Salinas-Matus et al. are summarized in this blog post: blogs.egu.eu/divisions/os... #OceanScience #Oceanography @egu.eu @tatianailyina.bsky.social

How do mesoscale eddies modulate CO2 fluxes in the Southern Ocean?

Mesoscale eddies and Southern Ocean carbon sink The Southern Ocean takes up more than a quarter of the anthropogenic CO₂. Its powerful westerly winds, deep overturning circulation, and intense mixing ...

blogs.egu.eu

🌊 check out our new paper

TRICUSO@tricuso.bsky.social · 7mo ago

New #paper by TRICUSO’s Jacqueline Behncke @geomarkiel.bsky.social & Peter Landschützer @vliz.be demonstrates how integrating #sailboat #data improves estimates of #ocean #carbon uptake Read the full article, published by @science.org: www.science.org/doi/10.1126/... @horizoneu.bsky.social #REA

New paper from TRICUSO colleagues & co-authors on how passive #acoustic #sensors on #biogeochemical profiling #floats can retrieve surface #wind speed from hundreds of meters below the #ocean surface. os.copernicus.org/articles/22/... @horizoneu.bsky.social #REA @sorbonne-universite.fr

New #paper by TRICUSO’s Jacqueline Behncke @geomarkiel.bsky.social & Peter Landschützer @vliz.be demonstrates how integrating #sailboat #data improves estimates of #ocean #carbon uptake Read the full article, published by @science.org: www.science.org/doi/10.1126/... @horizoneu.bsky.social #REA

Future atmospheric and ocean warming over the 21st century might be larger than previously expected based on a new study by @linusvogt.bsky.social Linus & I developed the idea during Linus research visit with me at @whoi.edu and turned it then into this paper: esd.copernicus.org/articles/16/...

Increased future ocean heat uptake constrained by Antarctic sea ice extent

Abstract. The ocean takes up over 90 % of the excess heat stored in the Earth system as a result of anthropogenic climate change, which has led to sea level rise and an intensification of marine extre...

esd.copernicus.org

We're thrilled to announce that the #EGU Ocean Sciences Division is now on Bluesky and LinkedIn!🎉 Follow us for the latest updates and many blog posts about the world of ocean science. 🌊🧪 👉 Check out our blog blogs.egu.eu/divisions/os/ & subscribe to stay informed! LinkedIn: bit.ly/3ItSwVr @egu.eu

Ocean Sciences

A blog hosted by the European Geosciences Union

blogs.egu.eu

SOCAT v2025 is released today! A grand total of 49.6 million surface ocean fCO2 observations from dozens of contributors around the world. www.socat.info/v2025 #ocean #co2

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Ocean Acidification Research Center@uaf-oarc-alaska.bsky.social · last yr.

Liqing Jiang led a new synthesis project for ocean carbonate chemistry data sets which is now in review. 🧪🌊🦑🌐 Check out the preprint! 👇 doi.org/10.5194/essd...

🌊 New phytoplankton phenology dataset (Nicholson et al.) 🌿 Discover what it is and what you can use it for with links to the paper and dataset (blog article written by Sandy Thomalla) blogs.egu.eu/divisions/os...

Monitoring the Ocean’s Green Pulse: A New Global Dataset for Phytoplankton Phenology

Phytoplankton are tiny, single-celled organisms mainly found in the ocean’s sunlit surface, where they grow through photosynthesis, forming the marine food web’s base and regulating Earth’s climate by...

blogs.egu.eu

🌊 Great medal and award lecture at #EGU25! Congrats to @tatianailyina.bsky.social for receiving the Fridtjof Nansen Medal and @polarocean.bsky.social for the Outstanding ECS Award for their outstanding work in oceanography👏 Truly great scientists! Check out the interviews: bit.ly/3ScAwQp @egu.eu

I am excited about my Fridtjof Nansen Medal Lecture tonight at #EGU25. It is about ocean carbon cycle, its predictability and feedbacks in the Earth system - topics I am truly passionate about. Hope to see many colleagues there 🧪 🌊 meetingorganizer.copernicus.org/EGU25/sessio... @egu.eu

At #EGU25, I gave an interview with respect to the Ocean Sciences @egu.eu #EarlyCareer Award. It is about my past, present and future science and also being a parent in academia! If you want to hear more, please come to my medal lecture tomorrow: meetingorganizer.copernicus.org/EGU25/sessio...

Jens Terhaar Receives the Division Outstanding Early Career Scientist Award – About His Career and Work

Jens Terhaar received the 2025 Division Outstanding Early Career Scientist Award for his research on the ocean carbon cycle and its effects on climate. We spoke with him about his career path and the ...

blogs.egu.eu

Interested in the freshwater distribution and variability in the Southern Ocean 🌊 ? Come by my #EGU25 presentation where I will show new insights from oxygen stable isotopes! 🗓️: Monday April 28 🕰️: 14:32 - 14:42 ⛓️‍💥: meetingorganizer.copernicus.org/EGU25/EGU25-...

1/3🌊 #EGU25 next week ! Come to my talk on our #SOCOMv2 work: strengths & limits of pCO₂ interpolation products to estimate the ocean carbon sink ➡️ Understand biases & uncertainties from data sparsity, mapping methods & CO₂ flux 📅 Mon 28 Apr | ⏰ 11:55 | 📍 Room C #OceanCarbon #EGU2025

Love the ocean 🌊? Love science 🔬? Want to get involved in some cool ocean research 🙋‍♀️ I've just updated the list of marine-themed community/citizen science! ➡️ www.oceanoculus.com/...

Dive into one of these marine community science projects

Whether you’re looking to dive into the ocean, keep your feet firmly on terra firma, or stay in your chair, there’s a community science (aka citizen science) project for you.

oceanoculus.com

A new estimate of the composite model-based estimate of the annually averaged ocean carbon sink. 🌊 This composite model-based estimate of the ocean carbon sink from 1959 to 2022 is similar in magnitude to the best estimate of the Global Carbon Budget but 70 % less uncertain.

Composite model-based estimate of the ocean carbon sink from 1959 to 2022

Abstract. The ocean takes up around one-quarter of anthropogenically emitted carbon and is projected to remain the main carbon sink once global temperatures stabilize. Despite the importance of this n...

bg.copernicus.org

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TRICUSO@tricuso.bsky.social · last yr.

The use of civilian platforms for #oceanobservation is a viable & sensible method to expand the capacity of the observing system. Get the scoop on the proof in the paper by @jacbeh.bsky.social, Peter Landshützer & Toste Tanhua www.nature.com/articles/s41... @horizoneu.bsky.social #REA #citscience

The use of civilian platforms for #oceanobservation is a viable & sensible method to expand the capacity of the observing system. Get the scoop on the proof in the paper by @jacbeh.bsky.social, Peter Landshützer & Toste Tanhua www.nature.com/articles/s41... @horizoneu.bsky.social #REA #citscience

💰 Weaker ocean circulation may cost trillions A new study by @felixschaumann.bsky.social and @edualastrue.bsky.social in @pnas.org reveals that a weakening Atlantic Meridional Overturning Circulation (AMOC) could lead to costs of several trillion euros. #CLICCS #climate #ocean @uni-hamburg.de

Weaker ocean current could cost trillions

Faculties

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🌊⛵ In 80 days Boris Herrmann sailed around the world, not just for the sport but also to aid climate research by collecting valuable ocean pCO2 data in remote regions. 🎥 Check out this German documentary focusing on his #ClimateProtection efforts and for which I was also interviewed: bit.ly/4grKcjU

Boris Herrmann - Segeln am Limit: Boris Herrmann - Das Rennen - hier anschauen

In 80 Tagen umrundet Boris Herrmann bei der Vendée Globe den Globus – 45.000 Kilometer nonstop allein auf seinem Segelboot. Er kämpft mit Extremwetter, Blitzeinschlag, Höhenangst und Einsamkeit. Schla...

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