Most of the scientists at the nonprofit that I cofounded, including my two cofounders, came from NCAR. It’s hard to overstate the importance of this place for climate science.

It is hard to overstate how critical @ncar-ucar.bsky.social is to climate science in the US and around the world. It's the beating heart of our field. Generations of scientists have trained there, and almost everyone I know relies on deep collaborations with NCAR scientists. It's end is unthinkable.

After 2 years of war, 98% of tree cropland and 75% of greenhouses in Gaza have been destroyed. Remote sensing maps tracking the progression of damage can help identify the best ways to remediate the land & rebuild Gaza’s agricultural sector. #AGU25 My latest for @eos.org: eos.org/articles/98-...

Proud to share our new paper in npj Clim. Atmos. Sci. (@SpringerNature)! Our findings: 1️⃣ reduce uncertainty in mid-latitude climate projections 2️⃣ increase confidence that #ClimateModels correctly predict a future poleward shift of the #JetStream Read the paper here 👉 rdcu.be/eS73b #ClimateScience

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Absolutely delighted to announce the publication of our benthic foraminifera trace element compilation + revised multivariate calibrations: Nauter-Alves et al. (2025): agupubs.onlinelibrary.wiley.com/doi/10.1029/... With @willerstorfi.bsky.social @mudwaterclimate.bsky.social and others

new paper led by Andressa Nauter-Alves assessing controls on trace elements (Mg, Sr, B, Li /Ca) in multiple species of benthic foraminifera using a large compilation of coretop samples (>1500 sites). dx.doi.org/10.1029/2025...

New research published today in @nature.com shows the Southern Annular Mode (SAM) – the Southern Hemisphere’s most influential climate driver – has reached its most positive state in more than a millennium. Read the Nature paper: www.nature.com/articles/s43...

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A rather pointed Opinion piece in Frontiers & a totally bizarre situation. Nature Geoscience published a 2024 claim of dark O2 production on the Pacific seafloor. There were several obvious problems with the work & multiple lines of argument that it wasn't correct www.frontiersin.org/journals/mar...

I love how being a librarian means I'm learning new things *all* the time. I've got a PhD in oceanography, but this morning I was answering a reference question & learned about ocean spiciness & how seawater can be "spicy" or "minty." 😍 TY to the person who asked about velocities of deep currents. 🌊

🌊 Southward shift of the Antarctic Circumpolar Current upstream of Drake Passage maintains a stable circumpolar transport www.nature.com/articles/s41...

@agu.org New in #JGR a study on 🌊 Ocean Alkalinity Enhancement: higher alkalinity speeds up growth of key #coccolithophores, but at very high TA calcification falters & shells deform. Authors suggest TA <~3,000 μmol kg−1 as a safer ecosystem boundary. doi.org/10.1029/2025... #protistsonsky

📢Global Carbon Budget 2025📢 Fossil CO2 emissions continue to rise in 2025 while the terrestrial carbon sink recovers to pre-El Niño strength. The key findings are covered in two reports this year: * ESSDD (preprint): essd.copernicus.org/preprints/es... * Nature: www.nature.com/articles/s41... 1/

Components of the global carbon budget and their uncertainties as a function of time bit.ly/GCB2025-b Friedlingstein, P. et al. (2025). Global Carbon Budget 2025. Earth System Science Data Discussion, (Under Review). DOI:10.5194/essd-2025-659

Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)

🌊 New commentary explains how the ocean’s CO2 buffering is weakening as the carbonate saturation horizon shoals. …a super clear explanation of a complex problem. www.nature.com/articles/s41...

Anyway, we need some joy, so here's the Egyptian foreign minister being given a Lego Pyramid by the Danish foreign minister.

Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊 www.jobs.ac.uk/job/DPG117/p...

Fresher waters in the Southern Ocean trapped CO2 at depth for decades www.nature.com/articles/s41...

If you can't be with the forams you love, love the forams you're with #Ammonia

Excited to share our new paper out today in Science led by Patrizia Ziveri and the BIOCAL Working Group! With @willerstorfi.bsky.social, @nanophyto.bsky.social, @tdegaridel.bsky.social and many colleagues! @climatecerege.bsky.social @icta-uab.bsky.social 🔗 science.org/doi/10.1126/science.adq8520

New in @science.org: Calcifying plankton #coccolithophores, #foraminifera & #pteropods quietly drive the ocean carbon pump. Their traits (incl. “shallow dissolution”) are missing from many climate models. Time to put CaCO₃ back in the picture. #ClimateScience 🌊 doi.org/10.1126/scie... #protistsonsky

Hello! we have a new paper out today in @science.org reviewing Calcifying Plankton : from Biomineralization to Global change 🌊🧪🐚 www.science.org/doi/10.1126/...

In Science, a new reconstruction of global sea levels spanning the past 4.5 million years reveals that oceans once stood up to 20 meters higher than today and links the waxing and waning of ancient ice sheets to shifts in Earth’s temperature and carbon dioxide cycles. https://scim.ag/42STXUm

Droplet outbursts from onion cutting | PNAS www.pnas.org/doi/10.1073/...

Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11 www.nature.com/articles/s41...

Today, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social 🌊 www.science.org/doi/10.1126/...

The Rainfall Observers Over the past three centuries, thousands of people across the British & Irish Isles have recorded rainfall, often every day for decades. Here we recognise some of the individuals who made particularly important contributions. rmets.onlinelibrary.wiley.com/doi/10.1002/...

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🚨New work🚨 led by Ph.D. student Dipesh Chuphal (IIT Gandhinagar), shows that the recent drying of the Ganga River basin is unprecedented in 1,300 years—more severe than historical famines. This ~multidecadal drying appears forced, but many models do not capture it. ☔️ 🌧️ www.pnas.org/doi/10.1073/...

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🌟 Postdoc Opportunity in Marine Biogeochemistry at CNRS-CEREGE! 🚢 Are you a passionate researcher ready to tackle climate change? Dive into the ERC-funded Deep-C project in Aix-en-Provence, France! ⬇️

🇮🇹🇵🇸 #BREAKING | In Genoa, the dockers refuse to be complicit. They blocked the loading of the Zim New Zealand ship, filled with weapons for Israel. Supported by their unions, they paralyzed the port, forcing the ship's departure... empty.

"Before the 7 October atrocity about 40% of its land was farmed. Despite its extreme population density, Gaza was mostly self-sufficient in vegetables and poultry. But last month, just 1.5% of its agricultural land now remains both accessible and undamaged." www.theguardian.com/commentisfre...

There's a really nice explanation (with clear graphics) in this @quantamagazine.bsky.social article of why most molecules in the atmosphere (oxygen & nitrogen) don't act as greenhouse gases, but a lot of the far less numerous ones (like carbon dioxide and methane) do. A great teaching aid :)

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Let's talk about how "ammonia" (NH₃) gets its name 🧪. Along the way, we'll talk about Alexander the Great, ancient Egyptian gods & a Roman misunderstanding. Let's start with these giant CASTLES made for PIGEONS in Siwa, Egypt, a tiny desert town built around an oasis, with 2 dry salt lakes nearby.

Why are these extinct cephalopods called "Ammonites"? The Egyptians worshiped a fertility & weather god called Amon, or Amon-Ra, often depicted as a man with the head of a ram. The Phoenicians imported this god into their deity 'Baal Hammon'... (🧑‍🎨: Masato Hattori, SciLibrary)

1/n 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/...

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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 paper on Southern Ocean CO2🚨 Using a suite of Earth system models, Maddie Shankle et al show that better ventilation of intermediate waters in the North Pacific ends up reducing outgassing of CO2 in the Southern Ocean 🌊🧪⚒️🧵 @earthscista.bsky.social www.nature.com/articles/s41...

Controls of the global overturning circulation of the ocean by Roquet et al 🌊 looks like a neat review! www.nature.com/articles/s41...

Absolutely fantastic treat of #ICP15 workshop on #foraminifera #proxies this morning #Biology #Environment #Chemistry #Ecology #Calibrations #collection and much more.. Thank you - @oscarbranson.bsky.social @willerstorfi.bsky.social Lenart De Nooijer and Jarek Tyszka

Our #foraminifer #workshop : Lies, Damned Lies and Foraminiferal Proxies - Lenart De Nooijer and @oscarbranson.bsky.social Jarek Tyszka Along with @willerstorfi.bsky.social @michaelhenehan.bsky.social and many ECRs at #ICP15