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Reposted by Jens Daniel Müller

Jens Terhaar @polarocean.bsky.social · 6d

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

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Reposted by Jens Daniel Müller

Danai Filippou @danaifilippou.bsky.social · Jul 24

Call for #abstracts – Ocean Sciences Meeting 2026 🌊
📅 February 22–27, 2026
📍 Glasgow, Scotland

We are excited to announce our #OSM26 session: CC019 – Ocean uptake, transport, and storage of heat and carbon

Details and submission: agu.confex.com/agu/osm26/pr...

See you in Glasgow! ✨️

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Jens Daniel Müller @jens-d-mueller.bsky.social · 16d

🙏 I was marginally involved in this effort and am here to take questions 👋😜

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Reposted by Jens Daniel Müller

Nature Portfolio @natureportfolio.nature.com · 17d

A study in Nature Climate Change shows that the ocean carbon sink unexpectedly declined in 2023 despite record-high sea surface temperatures (SSTs), primarily due to SST-driven outgassing of CO2 in the subtropics. 🌊 🧪

Unexpected decline in the ocean carbon sink under record-high sea surface temperatures in 2023 - Nature Climate Change

The ocean carbon sink strengthened in previous warm El Niño years due to reduced CO2 outgassing in the tropics. Here the authors show that the ocean carbon sink declined in 2023 despite record-high sea surface temperatures (SSTs), primarily due to SST-driven outgassing of CO2 in the subtropics.

go.nature.com

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Reposted by Jens Daniel Müller

UN Environment Programme @unep.org · 18d

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

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Reposted by Jens Daniel Müller

Lennart Bach @bachlennart.bsky.social · 19d

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This study led by @aaronferderer.bsky.social tested how 5 diatom species respond to broad ranges of seawater carbonate conditions. Goal was to determine carbonate chemistry niches and to inform Ocean Alkalinity Enhancement (OAE) and Ocean Acidification (OA)

🌊

www.science.org/doi/10.1126/...

Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations

Diatom growth rates are determined by concentrations of CO2 and H+ across broad carbonate chemistry landscapes.

www.science.org

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Jens Daniel Müller @jens-d-mueller.bsky.social · 21d

🌊 Very exciting opportunity in ocean physics!

Galen McKinley @oceancarbon.bsky.social · 21d

In the Department of Earth and Environmental Sciences @columbiauniversity.bsky.social, we are hiring an Assistant Professor in Atmosphere and/or Ocean Physics. No deadline stated, but review will begin soon, so please do not delay. apply.interfolio.com/173819

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Jens Daniel Müller @jens-d-mueller.bsky.social · 22d

Certainly an important task, Andrew 😉 Let's see were we stand in a couple of months, at least in terms of consistency across models. Any recommendations on how to support the model simulations with targeted observations are of course highly welcome.

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

Also, I’m grateful for five fantastic years in the @upgroup.bsky.social at @usyseth.bsky.social , where I was trusted to lead #RECCAP2. Those experiences and the amazing network I built are the basis for this next adventure!

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🇨🇭 Big thanks to @froeltho.bsky.social at University of Bern for hosting me for this project! Working back to back with OAE experts Friedrich Burger and Hendrik Grosselindemann will greatly benefit OAEMIP.

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

👋 Want to get involved? Don’t hesitate to reach out — there’s still room for more modeling centers to join this important and timely intercomparison effort!

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🌐 We already have some fantastic modeling centers on board! Excited to keep working with @jhauck.bsky.social (AWI), @aoschlies.bsky.social (GEOMAR), Jörg Schwinger (NORCE Research), Raffaele Bernadello (Barcelona Supercomputing Center) & Andrew Lenton (CSIRO).

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🧑‍🧑‍🧒‍🧒 Looking forward to teaming up with David Keller and @mtyka.bsky.social to make this project a reality.

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

Also, I’m grateful for five fantastic years in the @upgroup.bsky.social at @usyseth.bsky.social , where I was trusted to lead #RECCAP2. Those experiences and the amazing network I built are the basis for this next adventure!

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🇨🇭 Big thanks to @froeltho.bsky.social at University of Bern for hosting me for this project! Working back to back with OAE experts Friedrich Burger and Hendrik Grosselindemann will greatly benefit OAEMIP.

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

👋 Want to get involved? Don’t hesitate to reach out — there’s still room for more modeling centers to join this important and timely intercomparison effort!

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🌐 We already have some fantastic modeling centers on board! Excited to keep working with @jhauck.bsky.social (AWI), @aoschlies.bsky.social (GEOMAR), Jörg Schwinger (NORCE Research), Raffaele Bernadello (Barcelona Supercomputing Center) & Andrew Lenton (CSIRO).

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

I’ll be coordinating #OAEMIP – the first global Model Intercomparison Project for Ocean Alkalinity Enhancement. Here’s the initial announcement with a few ideas of what we’re planning 👇
www.carbontosea.org/2025/03/20/o...

A New OAE Model Intercomparison Project Has Launched - Carbon to Sea Initiative

Today, we’re announcing a new project to enhance researchers’ ability to compare ocean alkalinity enhancement (OAE) modeling results. Through coordinated multi-model studies, the Ocean Alkalinity Enha...

www.carbontosea.org

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Jens Daniel Müller @jens-d-mueller.bsky.social · 23d

🚀 Exciting next step: I’ll soon start as a Research Fellow at Carbon to Sea! 🌊

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Reposted by Jens Daniel Müller

Ruth Mottram @ruthmottram.bsky.social · 28d

Round 1 of the second science seminar for #AntarcticaInSync - an international collaboration aiming at advancing research of all kinds in Antarctica + the Southern Ocean. Fear not if you missed it, there is another chance Wednesday at 15:00 UTC
www.antarctica-insync.org/2nd-antarcti...

2nd Antarctica InSync International Science Webinar - event - Antarctica Insync

Join us for a dynamic online workshop to advance the scientific planning of Antarctica InSync, an international initiative endorsed by the UN Ocean Decade. Aiming for a circumpolar assessment of Antarctica and the Southern Ocean, the initiative explores the links ... Read more

www.antarctica-insync.org

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Jens Daniel Müller @jens-d-mueller.bsky.social · Sep 4

Every measurement matters 👏👇

Judith Hauck @jhauck.bsky.social · Sep 4

So nice to see #Polarstern pCO₂ data from the @awi.de MOSAiC expedition being used to provide better quantifications of Arctic Ocean CO₂ uptake. 🌊
agupubs.onlinelibrary.wiley.com/doi/10.1029/...

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Reposted by Jens Daniel Müller

Galen McKinley @oceancarbon.bsky.social · Sep 4

news.climate.columbia.edu/2025/09/04/t... We've had a new analysis published on the impact on the ocean carbon sink from the unprecedented ocean warming of 2023.

The Ocean Carbon Sink Is Ailing

Measurements analyzed by an international research team indicate the global ocean absorbed significantly less CO₂ than anticipated during the unprecedented marine heatwave in 2023.

news.climate.columbia.edu

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Jens Daniel Müller @jens-d-mueller.bsky.social · Sep 4

Would you dare to link these two aspects in a single news article? Asking for a journalist 🙈

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Reposted by Jens Daniel Müller

Pierre Friedlingstein @pfriedling.bsky.social · Sep 2

Great news study of the global ocean carbon sink response to the 2023 warming conditions

Jens Daniel Müller @jens-d-mueller.bsky.social · Sep 2

🌊 In 2023, the ocean carbon sink weakened for the first time in a record-hot year 🌡️🌎
Our new study in Nature Climate Change quantifies this unexpected decline and explains how it came about. 👇
doi.org/10.1038/s415...

Unexpected decline in the ocean carbon sink under record-high sea surface temperatures in 2023 - Nature Climate Change

The ocean carbon sink strengthened in previous warm El Niño years due to reduced CO2 outgassing in the tropics. Here the authors show that the ocean carbon sink declined in 2023 despite record-high se...

doi.org

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Jens Daniel Müller @jens-d-mueller.bsky.social · Sep 2

Thanks for multiplying, @pfriedling.bsky.social! I'm happy to discuss if some approaches can be picked up in the GCB. For example, to address whether the ocean carbon sink in a particular year was weak(er) or strong(er) (than expected).

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