I had an engagement with blogger, failed California gubernatorial candidate, and self-identified reporter Michael Shellenberger this past week, which started out being about this new paper being heralded by climate skeptics as disproving global sea-level acceleration. (LONG 🧵)

🌊 Looking for a #postdoc to join us at @ipsl.bsky.social within the #ANR project #AIAI (AI to improve coupling between the Antarctic 🧊 and the 🌊/🌧️), a collaboration between @igegrenoble.bsky.social , @lsce-ipsl.bsky.social and #LOCEAN! Deadline: Aug 8th Apply here: emploi.cnrs.fr/Offres/CDD/U...

Paper just out in AI4Earth led by the incredible @eveapiedagnel.bsky.social. We show how to exploit the ocean’s tight T-S relationship at constant pressure to map trends in salinity from sparse data doi.org/10.1175/AIES.... GMM works well because the relationships are so linear, but why are they?

1. Kevin Gross and I just posted a new science-of-science preprint. This one explores the looming peer review crisis. As many of you know, it's becoming significantly more difficult for journal editors to find scholars willing to serve as peer reviewers for submitted manuscripts.

⏰ Free access to read & download thru August 20 the final published version of Wendy Parker & my paper "Understanding Data Uncertainty" at this link ⬇️ authors.elsevier.com/c/1lMUI8yuR6... #philsci #metasci 🧪 ⚒️

Do bubbles matter for ocean carbon uptake? 🌊🫧 Yes, especially for local CO2 fluxes, where wave breaking can enhance variability by up to 40%. That’s an important consideration for #mCDR, where fluxes could otherwise be miscalculated. More in our paper here: [https://doi.org/10.1029/2024GB008382]

New paper alert! 🌊 What processes control the efficiency of ocean heat uptake under CO₂ forcing? We show that Southern Ocean stratification and overturning are key, check out our publication in Ocean Science here: doi.org/10.5194/os-2... More details below 🧵👇

📢 New paper alert! 📢 New insight into how sea ice controls the ocean uptake of carbon dioxide around Antarctica, obtained from the unique year-round Rothera Time Series. Delighted to be part of this study, led by the very excellent Elise Droste. 🧪❄️🥼🌊 www.nature.com/articles/s43...

Last day at the GISS building (Wed. May 28th). 🥲

Great panel discussion, although sad that this was probably my first and last time visiting this venue (for the foreseeable future)

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-...

🌊 The N.Atlantic has been experiencing extreme T°C in 2023. This situation raises a number of questions: Have we missed something? Do climate models allow us to understand such an event, or have we entered a new climate regime? We attempted to answer these questions in this study: rdcu.be/eh0e8 1/14

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.

Key takeaways from our study on the record-breaking global sea surface temperature jump in 2023-24: • A rare 1-in-512-year event • Only possible due to human-caused global warming • Climate models capture it—no signs of unexpected climate change More details below 👇

Why have the sea surface temperature suddenly risen in 2023/24? 🌊 Is it true that climate models cannot simulate such SST jumps? What is common to such jumps? How will SSTs evolve over the next months and years? Are we in uncharted territory? More from our recent study in Nature is here👇

🌊 🚨 Postdoc position alert 🚨 🌊 Optimizing Southern Ocean Carbon Sink Observations Using Autonomous Floats ( @bgc-argo.bsky.social ) Supervisors: JB Sallée ; Collaboration: H. Claustre ; P. Landschutzer ; E. McDonagh Location: IPSL (LOCEAN), Paris, Fr emploi.cnrs.fr/Offres/CDD/U...

🌊 🚨 Postdoc position alert 🚨 🌊 The Future Evolution of Global Ocean Overturning Cells at Different Global Warming Levels (2 years) Deadline for application: 1 April 2025 Supervisors: Jean-Baptiste Sallée, Roland Séférian Location: CNRM, Toulouse, France More info: docs.google.com/document/d/1...

Listen back to the GO2NE webinar 34, where I discussed our latest research into the drivers of recent global #ocean #deoxygenation 🌊 Thanks to the #GO2NE team for hosting me! 📽️ youtu.be/i3zc1bjcFDI?... 📄 www.nature.com/articles/s41...

Has the Atlantic Meridional Overturning Circulation (AMOC) weakened over the last decades? In our new study, we combine state-of-the-art CMIP6 models and observation-based estimates of the air-sea heat flux in the North Atlantic to show that the AMOC has not declined since the 1960s! 🌊

Please join me in congratulating @manonberger.bsky.social in her successful PhD defense at @geosciences.bsky.social. She showed that growing seaweed (macroalgae) is not an effective way to remove atmospheric CO₂. 🌊

Marine heatwaves (MHWs) don’t just harm ecosystems—they also alter the ocean’s carbon cycle! Our new analysis of 30 global datasets shows ocean CO₂ uptake drops by 8% during MHWs, with regional anomalies reaching up to 30%. 🌊

A new paper led by Sebastian Sippel just appeared in Nature arguing that ocean temperature measurements in the early 20th century have a cold bias. It's a fun story illustrating the process of scientific discovery, so let me talk about it a bit. 🧵 www.nature.com/articles/s41...

🚨Exciting Postdoctoral Opportunities in Oceanography 🌊 at CNRM Climate Center, Toulouse 🚨 We are seeking two highly motivated postdoctoral researchers to join us for 2 two-year positions!

Marine heatwaves have profoundly impacted ecosystems, calling for improved understanding of their dynamics and predictability. Our review highlights advances in studying their 3D structure, drivers, links to other extremes, future projections, and prediction skills. www.nature.com/articles/s43... 🌊🔥

🚨 Sea-ice modellers and polar region enthusiasts! ❄🧊🌊 There will be a session on "Advances in Sea-Ice Modelling" at #EGU25 again! Let's discuss the latest breakthroughs in sea-ice modelling and new methodologies. Deadline is Jan 15th! shorturl.at/fhfeS #SeaIce #Modelling #Climate #Arctic #Antarctica

📄🧪🌊 New paper alert! 🔔 “Past foraminiferal acclimatization capacity is limited during future warming” led by Rui Ying Co-authors: Fanny M. Monteiro, Jamie Wilson, myself and Daniela N. Schmidt. Neither of them are here yet, so I need you all to cheer with me! www.nature.com/articles/s41...

The 2024 Global Carbon Budget was just released! Unfortunately despite hopes emissions might peak, both fossil CO2 and total CO2 emissions reached new record highs. I cover details w/ Pierre Friedlingstein (@PFriedling) at Carbon Brief: www.carbonbrief.org/...

They now exist. Marine biogeochemistry go.bsky.app/TK79r4w Polar ocean go.bsky.app/851nQgx Physical oceanography go.bsky.app/Eb6xX19 Sea level and coastal erosion go.bsky.app/B6spBdu

Cool paper delivering an observation based assessment of winter water in the seas around Antarctica: 🌊 “The Observed Spatiotemporal Variability of Antarctic Winter Water” agupubs.onlinelibrary.wiley.com/doi/full/10....

New paper by Helene Hollitzer, PhD student in Bern, about the competing effects of wind and buoyancy forcing on ocean oxygen trends in recent decades! Read more to see why we believe ocean deoxygenation will accelerate and even continue when global warming stabilizes. www.nature.com/articles/s41...