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Will Gray

@willerstorfi.bsky.social
1.3K followers 1.1K following 165 posts

Geochemistry/Paleoclimate, Research Scientist @ LSCE/IPSL, Paris

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Reposted by Will Gray
David Ho @davidho.bsky.social · 17/12/2025
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.
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Kim Cobb @kimcobb.bsky.social · 17/12/2025
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.
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Kimberly Cartier @astrokimcartier.bsky.social · 03/12/2025
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-...
eos.org
98% of Gaza’s Tree Cropland Destroyed by Israel - Eos
Maps based on remote sensing analysis could inform remediation efforts by identifying whether agricultural lands were damaged by bombs, debris, or forced displacement of its caretakers.
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Michael Sigmond @michaelsigmond.bsky.social · 09/12/2025
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
rdcu.be
Jet stream response to future Arctic sea ice loss not underestimated by climate models
npj Climate and Atmospheric Science - Jet stream response to future Arctic sea ice loss not underestimated by climate models
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Will Gray @willerstorfi.bsky.social · 06/12/2025
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The Amoeba Lab @amoeba-lab.bsky.social · 05/12/2025
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
agupubs.onlinelibrary.wiley.com
Thermal and Non‐Thermal Controls on Benthic Foraminiferal Mg/Ca, Sr/Ca, B/Ca, and Mg/Li: Global Core‐Top Compilation, Revised Calibrations, and Application to the Geologic Record
We compile ∼1,500 core-top benthic foraminiferal Mg-Sr-B-Li/Ca measurements from five species and one genus to produce new calibrations Many benthic foraminiferal elemental systems require multiv...
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Will Gray @willerstorfi.bsky.social · 04/12/2025
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...
dx.doi.org
Thermal and Non‐Thermal Controls on Benthic Foraminiferal Mg/Ca, Sr/Ca, B/Ca, and Mg/Li: Global Core‐Top Compilation, Revised Calibrations, and Application to the Geologic Record
We compile ∼1,500 core-top benthic foraminiferal Mg-Sr-B-Li/Ca measurements from five species and one genus to produce new calibrations Many benthic foraminiferal elemental systems require multiv...
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Australian Centre for Excellence in Antarctic Science (ACEAS) @antarcticsciaus.bsky.social · 02/12/2025
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...
nature.com
Southern Annular Mode dynamics, projections and impacts in a changing climate - Nature Reviews Earth & Environment
The Southern Annular Mode (SAM) has shifted towards its positive phase owing to ozone depletion and increasing greenhouse gas concentrations. This Review discusses the dynamics, trends and projections...
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Will Gray @willerstorfi.bsky.social · 01/12/2025
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Mark Hopwood @markinchina.bsky.social · 01/12/2025
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...
frontiersin.org
Frontiers | Extraordinary Claims Require Extraordinary Evidence: Evaluating Nodule-Associated Dark Oxygen Production
Dark oxygen production (DOP) broadly encompasses all light-independent pathways that produce oxygen (Ruff et al., 2024), including microbial and abiotic proc...
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Amanda Whitmire @thalassalib.bsky.social · 20/11/2025
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. 🌊
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Prof Ian Hall @ianhall.bsky.social · 18/11/2025
🌊 Southward shift of the Antarctic Circumpolar Current upstream of Drake Passage maintains a stable circumpolar transport www.nature.com/articles/s41...
nature.com
Southward shift of the Antarctic Circumpolar Current upstream of Drake Passage maintains a stable circumpolar transport - Nature Climate Change
Climate change is altering the strength and position of Southern Ocean westerly winds but the ocean transport is stable. Here the authors use sea surface height to show that a poleward shift of the no...
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Jelena Godrijan 🫧❾🌊🦋 @godi.bsky.social · 17/11/2025
@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
doi.org
The Physiological Response of Contrasting Coccolithophore Species to Ocean Alkalinity Enhancement
Increased alkalinity significantly boosts growth rates of coccolithophores Gephyrocapsa huxleyi and Coccolithus braarudii Divergent responses between species arise as large C. braarudii rely on C...
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Glen Peters @glenpeters.bsky.social · 13/11/2025
📢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/
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Hun Park @climate-nature.bsky.social · 13/11/2025
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
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Jesse Farmer @jfarmersalmanac.bsky.social · 07/11/2025
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)
science.org
Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years
Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...
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Prof Ian Hall @ianhall.bsky.social · 04/11/2025
🌊 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...
nature.com
Extinguishing the saturation horizon - Nature Chemistry
The buffering capacity of the world’s oceans has helped offset the effects of CO2 emissions on climate; however, it is not without cost. Bruce Gibb discusses the causes, the chemistry and the conseque...
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Bruce Gorrie @bsrg1.bsky.social · 03/11/2025
Anyway, we need some joy, so here's the Egyptian foreign minister being given a Lego Pyramid by the Danish foreign minister.
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Prof Alessandro Tagliabue @altagliabue.bsky.social · 29/10/2025
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...
jobs.ac.uk
Postdoctoral Research Associate at University of Liverpool
Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!
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Prof Ian Hall @ianhall.bsky.social · 29/10/2025
Fresher waters in the Southern Ocean trapped CO2 at depth for decades www.nature.com/articles/s41...
nature.com
Fresher waters in the Southern Ocean trapped CO2 at depth for decades - Nature Climate Change
A human-driven increase in upwelling of carbon-rich deep waters threatens the efficiency of the Southern Ocean carbon sink, which substantially mitigates global warming. Long-term observations reveal ...
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Stefan Fisher-Høyrem @stfisherhoyrem.bsky.social · 24/10/2025
bbc.co.uk
Largest study of its kind shows AI assistants misrepresent news content 45% of the time – regardless of language or territory
An intensive international study was coordinated by the European Broadcasting Union (EBU) and led by the BBC
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The Amoeba Lab @amoeba-lab.bsky.social · 03/05/2025
If you can't be with the forams you love, love the forams you're with #Ammonia
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Sonia Chaabane @soniachaabane.bsky.social · 23/10/2025
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
science.org
Calcifying plankton: From biomineralization to global change
The cycling of calcium carbonate (CaCO3) in the ocean is closely linked to seawater alkalinity and the regulation of atmospheric CO2. In the modern pelagic ocean, almost all CaCO3 is produced by three...
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Jelena Godrijan 🫧❾🌊🦋 @godi.bsky.social · 23/10/2025
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
doi.org
Calcifying plankton: From biomineralization to global change
The cycling of calcium carbonate (CaCO3) in the ocean is closely linked to seawater alkalinity and the regulation of atmospheric CO2. In the modern pelagic ocean, almost all CaCO3 is produced by three...
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Will Gray @willerstorfi.bsky.social · 23/10/2025
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/...
science.org
Calcifying plankton: From biomineralization to global change
The cycling of calcium carbonate (CaCO3) in the ocean is closely linked to seawater alkalinity and the regulation of atmospheric CO2. In the modern pelagic ocean, almost all CaCO3 is produced by three...
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Science Magazine @science.org · 23/10/2025
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. scim.ag/42STXUm
scim.ag
Global mean sea level over the past 4.5 million years
Changes in global mean sea level (GMSL) during the late Cenozoic remain uncertain. We use a reconstruction of changes in δ18O of seawater to reconstruct GMSL since 4.5 million years ago (Ma) that acco...
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Victor Ambros @vambros.bsky.social · 21/10/2025
Droplet outbursts from onion cutting | PNAS www.pnas.org/doi/10.1073/...
pnas.org
Droplet outbursts from onion cutting | PNAS
Cutting onions often leads to tear-inducing aerosol release, yet the underlying mechanics remain poorly understood. In this work, via high-speed ch...
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Prof Ian Hall @ianhall.bsky.social · 19/10/2025
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11 www.nature.com/articles/s41...
nature.com
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11 - Nature Communications
Recurring deep ocean oxygen minimum events occur in the Pacific Southern Ocean during the warm climate interval Marine Isotope Stage 11. They are linked with perturbed Antarctic Bottom Water formation...
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Patrick Rafter @oceanandclimate.bsky.social · 03/10/2025
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/...
science.org
Persistent eastern equatorial Pacific Ocean upwelling since the warm Pliocene
Upwelling generates a nutrient-rich “cold tongue” in the eastern equatorial Pacific Ocean (EEP), with impacts on global climate, oceanic biological productivity, and the carbon cycle. The cold tongue ...
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Ed Hawkins @edhawkins.org · 01/10/2025
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/...
rmets.onlinelibrary.wiley.com
The rainfall observers
Over the past three centuries, thousands of people across the British and Irish Isles have regularly recorded rainfall, often every day for decades. Their efforts allow us to reconstruct long-term tr...
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Will Gray @willerstorfi.bsky.social · 30/09/2025
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Will Gray @willerstorfi.bsky.social · 30/09/2025
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Kau))) @carbon8.bsky.social · 22/09/2025
🚨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/...
Time series of standardized streamflow anomaly for the Ganga River from year 700 to 2020 (derived from a hydrological model and from the Monsoon Asia Drought Atlas built from tree rings). The plot shows mostly balanced wet (blue/green bars) and dry (brown bars) years until the 20th century, when the black moving-average line dips sharply after 1990. The 1991–2020 mean (blue horizontal line) is well below the range of previous 1,300 years. Orange dots mark major documented historical droughts, but the recent drying is clearly the most severe.Observed changes in precipitation and temperature between 1951 and 2020. Spatial distribution of change in (A) annual precipitation (%) and (B) annual mean temperature (°C) between 1951 and 2020 based on the Sen’s slope calculation. Grids with statistically significant trends (P <= 0.05), based on the Mann–Kendall test, are highlighted with stippling. The Inset panels in (A) and (B) represent the interannual variability in precipitation anomaly (%) and temperature (°C) averaged
for the Ganga River Basin (blue boundary). The total change in average precipitation and temperature over the GRB during 1951−2020, estimated using the Sen’s slope, is statistically significant (P-value <= 0.05) based on the Mann–Kendall test.
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Will Gray @willerstorfi.bsky.social · 29/09/2025
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Olivier Sulpis @sulpis.bsky.social · 29/09/2025
🌟 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! ⬇️
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Resist 🕎🍉 @antizionistjew.bsky.social · 29/09/2025
🇮🇹🇵🇸 #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.
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Rage Against the Miocene @organiccarbon.bsky.social · 27/09/2025
"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...
theguardian.com
Israel’s ecocide in Gaza sends this message: even if we stopped dropping bombs, you couldn’t live here | George Monbiot
Consider the annihilation of agricultural land alongside the genocide – and grasp the chilling totality of this attempt to eliminate all life, says Guardian columnist George Monbiot
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Helen Czerski @helenczerski.bsky.social · 26/09/2025
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 :)
quantamagazine.org
The Quantum Mechanics of Greenhouse Gases | Quanta Magazine
Earth’s radiation can send some molecules spinning or vibrating, which is what makes them greenhouse gases. This infographic explains how relatively few heat-trapping molecules can have a planetary ef...
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Will Gray @willerstorfi.bsky.social · 26/09/2025
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c0nc0rdance @c0nc0rdance.bsky.social · 26/09/2025
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.
Four tall chimney-like structures made of local adobe/mud that is light sandy colored.  From the sides jut bird roosting places, and they're studded with holes to allow the birds to enter the interior, where there are nesting boxes.

"Pigeon towers in Siwa, Egypt. Photo: Roland Unger, Wiki Commons"
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c0nc0rdance @c0nc0rdance.bsky.social · 12/05/2024
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)
An artist rendition of Ammonites in ancient seas.  They resemble conchs or squid with the armored shells of snails.
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Will Gray @willerstorfi.bsky.social · 25/09/2025
www.bbc.com/news/article...
bbc.com
Million-year-old skull rewrites human evolution, say scientists
New analysis suggests our species began to emerge at least half a million years earlier than we thought
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Lennart Bach @bachlennart.bsky.social · 19/09/2025
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/...
science.org
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.
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Will Gray @willerstorfi.bsky.social · 18/09/2025
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Robert Rohde @rarohde.bsky.social · 18/09/2025
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 🧵
Time series of monthly Northern Pacific Ocean sea surface temperature anomalies from 1850 to August 2025 alongside multi-model expectations of the warming in this area (scenario SSP2-4.5).
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James Rae @mudwaterclimate.bsky.social · 17/09/2025
🚨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...
nature.com
Southern Ocean CO2 outgassing and nutrient load reduced by a well-ventilated glacial North Pacific - Nature Communications
A better-ventilated North Pacific could have reduced the carbon of water upwelled in the Southern Ocean, reducing outgassing and revealing a remote influence on Southern Ocean biogeochemistry in glaci...
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David Ho @davidho.bsky.social · 10/09/2025
A popular meme format from the anime The Brave Fighter of Sun Fighbird. It shows a man with glasses (labeled “CARBON OFFSET DEVELOPERS”) looking at a yellow butterfly (labeled “DDT WASTE BARRELS”). The man gestures toward the butterfly with his palm open and asks, “IS THIS OCEAN ALKALINITY ENHANCEMENT?” 🌊
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Will Gray @willerstorfi.bsky.social · 09/09/2025
Controls of the global overturning circulation of the ocean by Roquet et al 🌊 looks like a neat review! www.nature.com/articles/s41...
nature.com
Controls of the global overturning circulation of the ocean - npj Climate and Atmospheric Science
npj Climate and Atmospheric Science - Controls of the global overturning circulation of the ocean
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Pallavi Anand (she/her) @anandpallavijha.bsky.social · 30/08/2025
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
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Pallavi Anand (she/her) @anandpallavijha.bsky.social · 30/08/2025
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
Lenart showing slide for the workshop!
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