Jacqueline Behncke

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 ...

🌊 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

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

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

Thumbnail for the first TRICUSO project video. Episode 1: Expanding the capacity of observation in the Southern Ocean. In the background is the beautiful scenery of the floating ice on the Southern Ocean, snowy mountains and a blue sky.

📽️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

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 ...

🌊🌀 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

🌊 check out our new paper

Graphic from the new paper: "Passive acoustic monitoring from profiling floats as a pathway to scalable autonomous observations of global surface wind"

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

Graphic from the new paper: "improved air-sea CO2 flux estimates from sailboat measurements"

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

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...

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/...

Ocean Sciences A blog hosted by the European Geosciences Union

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

Map showing the surface ocean CO₂ from ships, drifters and autonomous surface platforms and moorings for all data in SOCAT version 2025, coloured by fCO2 concentration (scale not shown).

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

🌊

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...

🌊 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...

🌊 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

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 ...

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...

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

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.

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/...

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...

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.

🌊

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 current could cost trillions Faculties

💰 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

Sailing through the southern seas of air–sea CO2 flux uncertainty | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences The Southern Ocean is among the largest contemporary sinks of atmospheric carbon dioxide on our planet; however, remoteness, harsh weather and other circumstances have led to an undersampling of the o...

🌊 Learn more about our work with the sailboat data:

Sailing boats as novel measurement platforms for observing remote ocean regions: bit.ly/4fMF0Y5 ⛵
How even a single sailboat makes a difference in estimating the ocean's carbon uptake: bit.ly/4fLWjJ6

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...

🌊⛵ 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

Hamburg sailor Boris Herrmann crossed the finish line of Vendée Globe. Howling winds and roaring waves was not the only challenge on the way. As in the previous races, his sailboat has been collecting precious CO2 data.

This matters for improving our understanding of the ocean carbon sink! 🧵
🌊🧪

🌊 Ready to make a big splash, TRICUSO wrapped up its kick-off in Southampton this week having set groundwork for a 4 year journey to develop technology & methods to address the #Carbon #Sink Status of the #Southern #Ocean in support of the #WMO Global Greenhouse Gas Watch. #Climate #research

Introducing our new project - TRICUSO - Three Research Infrastructures Carbon Uptake Southern Ocean. We aim to integrate effort from surface CO2 observations within ICOS, deep observations from GOSHIP and Argo as a contribution to the WMO Global Greenhouse Gas Watch
@tricuso.bsky.social 🌊

Working on or interested in "Budgets, trends, and drivers of major Greenhouse Gases in the atmosphere, on land, and in the ocean from regional to global scales"?

Please consider submitting to our session at EGU25 (meetingorganizer.copernicus.org/EGU25/sessio...).

See you soon 🌊

Book Review: Blue Machine by Helen Czerski The engine that is Earth’s ocean takes sunlight and converts it into giant underwater currents and waterfalls, hauling around the ingredients for life: nutrients, oxygen and trace metals like potassiu...

🌊 Ocean book review on the EGU #OceanSciences blog 🌊

I have read and reviewed "Blue Machine" by @helenczerski.bsky.social, and I highly recommend it. (Btw, it's perfect as a Christmas gift!) Any book recommendations for us to explore next? 📚💙
blogs.egu.eu/divisions/os...